供水工程项目建议书

have shown interest in this new and unusual sport. But though air cyclists may learn how to fly over short distances, and may, eventually, even get across the English Channel, it is doubtful whether they will ever cycle across the Atlantic. Lesson67 Volcanoes 火山 Haroun Tazieff the Polish scientist, has spent his life-time studying active volcanoes and deep caves in all parts of the world. In 1948, he went to lae Kivu in the Congo to observe a new volcano which he later named Kituro. Tazieff was able to set up his camp very close to the volcano while it was erupting violently. Though he managed to take a number of brilliant photographs, he could not stay near the volcano for very long. He noticed that a river of liquid roc was coming towards him. It threatened to surround him completely, but Tazieff managed to escape just in time. He waited until the volcano became quiet and he was able to return two days later. This time, he managed to climb into the mouth of Kituro so that he could take photographsand measure temperatures. Tazieff has often risked his life in this way. He has been able to tell us more about active volcanoes than any man alive. Lesson68 Persistent 纠缠不休 I crossed the street to avoid meeting him, but he saw me and came running towards me. It was no use pretending that I had not seen him, so I waved to him. I never enjoy meeting Bert Dyes. He never has anything to do. No matter how busy you are, he always insists on coming with you. I had to thin of a way of preventing him from following me around all morning. 'Hullo, Bert,' I said. 'Fancy meeting you here !' 'Hullo, Elizabeth,' Bert answered. ' I was just wondering how to spend the morning--until I saw you. You're not busy doing anything, are you ?' ' No, not at all,' I answered.' I'm going to.. .' 'Would you mind my coming with you ?' he asked, before I had finished speaing. ‘ Not at all,' I lied, 'but I'm going to the dentist.' ' Then I'll come with you,' he answered.' There's always plenty to read in the 'waiting room !' lesson69 But not murder! 并非谋杀！ I was being tested for a driving licence for the third time. I had been asked to drive in heavy traffic and had done so successfully. After having been instructed to drive out of town, I began to acquire confidence. Sure that I had passed, I was almost beginning to enjoy my test. The examiner must have been pleased with my performance, for he smiled and said, 'Just one more thing, Mr Eames. Let us suppose that a child suddenly crosses the road in front of you. As soon as I tap on the window, I want the car to be stopped immediately.' I continued driving and after some time, the examiner tapped loudly. Though the sound could be heard clearly, it too me a long time to react. I suddenly pressed the brae pedal hard and we were both thrown forward. The examiner looed at me sadly. 'Mr Eames,' he said, in a mournful voice,' you have just killed that child !' lesson70 Red for danger 危险的红色During a bullfight, a drun suddenly wandered into the middle of the ring. The crowd began to shout, but the drunk was unaware of the danger. The bull was busy with the matador at the time, but it suddenly caught sight of the drun who was shouting rude remarks and waving a red cap. Apparently sensitive to criticism, the bull forgot all about the matador and charged at the drunk. The crowd suddenly grew quiet. The drun, however, seemed quite sure of himself. When the bull got close to him, he clumsily stepped aside to let it pass. The crowd broe into cheers and the drun bowed. By this time, however, three men had come into the ring and they quickly dragged the drun to safety. Even the bull seemed to feel sorry for him, for it looed on sympathetically until the drun was out of the way before once more turning its attention to the matador. Lesson71 A famous cloc一个著名的大钟 When ou visit London, one of the first things you will see is Big Ben, the famous clock which can be heard all over the world on the B.B.C. If the Houses of Parliament had hot been burned down in 1834, the great cloc would never have beenerected. Big Ben taes its name from Sir Benjamin Hall who was responsible for the making of the cloc when the new Houses of Parliament were being built. It is not only of immense size, but is extremelyaccurate as well. Officials from Greenwich Observator have the clock checked twice a day. On the B.B.C. you can hear the clock when it is actually striking because microphones are connected to the cloc tower. Big Ben has rarely gone wrong. Once, however, it failed to give the correct time. A painter who had been working on the tower hung a pot of paint on one of the hands and slowed it down ! Lesson72 A car called Bluebird “蓝鸟”汽车 The great racing driver, Sir Malcolm Campbell, was the first man to drive at over 300 miles per hour. He set up a new world record in September 1935 at Bonneville Salt Flats, Utah. Bluebird, the car he was driving, had been specially built for him. It was over 30 feet in length and had a 2500 horse-power engine. Although Campbell reached a speed of over 304 miles per hour, he had great difficulty in controlling the car because a tyre burst during the first run. After his attempt, Campbell was disappointed to learn that his average speed had been 299 miles per hour. However, a few days later, he was told that a mistae had been made. His average speed had been 301 miles per hour. Since that time, racing drivers have reached speeds of over 400 miles an hour. Following his father's footsteps many years later, Sir Malcolm's son, Donald, also set up a world record. Like his father, he was driving a car called Bluebird. Lesson73 The record-holder 纪录保持者 Little boys who play truant from school are unimaginative. A quiet day's fishing, or eight hours in a cinema seeing the same film over and over again, is usually as far as they get. They have all been put to shame by a boy who, while playing truant, travelled 1600 miles. He hitch- hiked to Dover and, towards evening, went into a boat to find somewhere to sleep. When he woe up next morning, he discovered that the boat had, in themeantime, travelled to Calais. No one noticed the boy as he crept off. From there, he hitch-hiked to Paris in a lorry. The driver gave him a few biscuits and a cup of coffee and left him just outside the city. The next car the boy stopped did not tae him into the centre of Paris as he hoped it would, but to Perpignan on the French-Spanish border. There he was ped up by a policeman and sent bacto England by the local authorities. He has surely set up a record for the thousands of boys who dream of evading school. Lesson74 Out of the limelight 舞台之外 An ancient bus stopped by a dry river bed and a party of famous actors and actresses got off. Dressed in dark glasses and old clothes, they had taen special precautions so that no one should recognize them. But as they soon discovered, disguises can sometimes be too perfect. 'This is a wonderful place for a picnic,' said Gloria Gleam. ' It couldn't be better, Gloria,' Brinsley Meers agreed. 'No newspaper men, no film fans! Why don't we come more often ?' Meanwhile, two other actors, Rocwall Slinger and Merlin Greeves, had carried two large food baskets to a shady spot under some trees. When they had all made themselves comfortable, a stranger appeared. He looked very angry. 'Now you gut out of here, all of you!' he shouted: ' I'm sheriff here. Do you see that notice ? It sas\\ou can't read !' ' Look, sheriff, 'said Rocwall,' don't be too hard on us. I'm Rockwall Slinger and this is Merlin Greeves.' ' Oh, is it ?' said the sheriff with a sneer. 'Well, I'm Brinsley Meers, and my other name is Gloria Gleam. Now you get out of here fast !' lesson75 SOS 呼救信号 When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was illed. The only passengers, a young woman and her two baby daughters, were unhurt. It was the middle of winter. Snow lay thic on the ground. The woman knew that the nearest village was miles away. When it grew dark she turned a suitcase into a bed and put the children inside it, covering them with all the clothes she could find. During the night, it got terribly cold. The woman ept as near as she could to the children and even tried to get into the case herself, but it was too small. Early ,next morning she heard planes passing overhead and wondered how she could send a signal. Then she had an idea. She stamped out the letters' SOS' in the snow. Fortunately, a pilot saw the signal and sent a message by radio to the nearest town. It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash. Lesson76 April Fools Day 愚人节'To end our special news bulletin,' said the voice of the television announcer,' we are taking you to the macaroni fields of Calabria. Macaroni has been grown in this area for over six hundred years. Two of the leading growers, Giuseppe Moldova and Ricardo Brabante, tell me that they have been expecting a splendid crop this year and harvesting has begun earlier than usual. Here you can see two workers who, between them, have just finished cutting three cart-loads of golden brown macaroni stalks. The whole village has been working day and night gathering and threshing this year's crop before the September rains. On the right, you can see Mrs Brabante herself. She has been helping her husband for thirty years now. Mrs Brabante is talking to the manager of the local factory where the crop is processed. This last scene shows you what will happen at the end of the harvest : the famous Calabrian macaroni-eating competition ! Signor Fratelli, the present champion, has won it every year since 1961. And that ends our special bulletin for today, Thursday, April 1st. We are now returning you to the studio.' Lesson77 A successful operation 一例成功的手术 The mummy of an Egyptian woman who died in 800 B.C. has just had an operation. The mummy is that of Shepenmut who was once a singer in the Temple of Thebes. As there were strange marks on the X-ray plates taken of the mummy, doctors have been trying to find out whether the woman died of a rare disease. The only way to do this was to operate. The operation, which lasted for over four hours, proved to be very difficult because of the hard resin which covered the skin. The doctors removed a section of the mummy and sent it to a laboratory. They also found something which the X-ray of the god Duamutef. This god which has the head of a cow was normally placed inside a mummy. The doctors have not yet decided how the woman died. They feared that the mummy would fall to pieces when they cut it open, but fortunately this has not happened. The mummy successfully survived the operation. Lesson78 The last one?最后一枝吗？ After reading an article entitled 'Cigarette Smoing and Your Health' I lit a cigarette to calm my nerves. I smoked with concentration and pleasure as I was sure that this would be my last cigarette. For a whole week did not smoe at all and during this time, my wife suffered terribly. I had all the usual symptoms of someone giving up smong: a bad temper and an enormous appetite. My friends ept on offering me cigarettes and cigars. They made no effort to hide their amusement whenever I produced a packet of sweets from my pocket. After seven days of this I went to a party. Everybody around me was smoking and I felt extremely uncomfortable. When my old friend Brian urged me to accept a cigarette, it was more than I could bear. I too one guiltily, lit it and smoed with satisfaction. My wife was delighted that things had returned to normal once more. Anyway, as Brian pointed out, it is the easiest thing in the world to give up smoing. He himself has done it lots of times! Lesson79 By air 乘飞机 I used to travel by air a great deal when I was a boy. M parents, used to live in South America and I used to fly there from Europe in the holidays. An airhostess would tae charge of me and I never had an unpleasant experience. I am used to travelling air and only on one occasion have I ever felt frightened. After taking off, we were flying low over the city and slowlygaining height, when the plane suddenly turned round and flew bac to the airport. While we were waiting to land, an air-hostess told us to eep calm and to get off the plane quietly as soon as it had touched down. Everybody on board was worried and we were curious to find out what had happened. Later we learnt that there was a very important person on board. The police had been told that a bomb had been planted on the plane. After we had landed, the plane was searched thoroughly. Fortunately, nothing was found and five hours later we were able to tae off again. Lesson80 The Crystal Palace 水晶宫 Perhaps the most extraordinary building of the nineteenth century was the Crystal Palace, which was built in Hyde Park for the Great Exhibition of 1851. The Crystal Palace was different from all other buildings in the world, for it was made of iron and glass. It was one of the biggest buildings of all time and a lot of people from many countries came to see it. A great many goods were sent to the exhibition from various parts of the world. There was also a great deal of machinery on display. The most wonderful piece of machinery on show was Nasmyth's steam hammer. Though in those days, travelling was not as easy as it is today, steam boats carried thousands of visitors across the Channel from Europe. On arriving in England, they were taken to the Crystal Palace b train. There were six million visitors in all, and the profits from the exhibition were used to build museums and colleges. Later, the Crystal Palace was moved to South London. It remained one of the most famous buildings in the world until it was burnt down in 1936. Lesson81 Escape 脱逃 When he had killed the guard, the prisoner of war quicly dragged him into the bushes. Woring rapidly in the darness, he soon changed into the dead man's clothes. Now, dressed in a blue uniform and with a rifle over his shoulder, the prisoner marched boldly up and down in front of the camp. He could hear shouting in the camp itself. Lights were blazing and men were 安顺市西秀区双堡镇供水工程－项目建议书

简介： 双堡镇驻地供水工程区域，地势平坦，岩溶发育，地下通道众多，但地下水源水质含铁量和总硬度超标，饮用后易患胆结石，由于受众多因素的制约，该区域还在饮用不安全水源。

关键字：安顺市 西秀区 双堡镇 供水工程 第一章 编制依据及范围 1.1 编制依据

1、《中华人民共和国水法》 2、《中华人民共和国建筑法》

3、《地面水环境质量标准》 国标GB3838—2002 4、《生活饮用水水源水质标准》国标GJ3020—93 5、《生活饮用水水质规范》 国家卫生部 2001年 6、《生活饮用水卫生标准》 国标GB5749—85 7、《城市给水工程规划规范》 国标GB5028—98 8、《室外给水设计规范》 国标GBJ13—86 1997年

9、《水利工程水费核定、计收和管理办法》 国务院 1985年 10、《水利建设项目经济评价规范》 SL72-94

11、《水利水电建设法规文件选编》贵州省水利水是建设管理总站编 1998年12月

12、《乡镇供排水》 中国水利水电出版社 1999年 13、《贵州省地理信息数据集》 贵州人民出版社 1994年 14、《贵州省安顺市水资源报告》 安顺市水利局 1998年

15、安顺市西秀区双堡镇人民政府与安顺市西秀区水电勘测设计队签订的设计合同

1.2 项目范围

双堡镇供水工程由以下六部分组成：

have shown interest in this new and unusual sport. But though air cyclists may learn how to fly over short distances, and may, eventually, even get across the English Channel, it is doubtful whether they will ever cycle across the Atlantic. Lesson67 Volcanoes 火山 Haroun Tazieff the Polish scientist, has spent his life-time studying active volcanoes and deep caves in all parts of the world. In 1948, he went to lae Kivu in the Congo to observe a new volcano which he later named Kituro. Tazieff was able to set up his camp very close to the volcano while it was erupting violently. Though he managed to tae a number of brilliant photographs, he could not stay near the volcano for very long. He noticed that a river of liquid roc was coming towards him. It threatened to surround him completely, but Tazieff managed to escape just in time. He waited until the volcano became quiet and he was able to return two days later. This time, he managed to climb into the mouth of Kituro so that he could tae photographs and measure temperatures. Tazieff has often risked his life in this way. He has been able to tell us more about active volcanoes than any man alive. Lesson68 Persistent 纠缠不休 I crossed the street to avoid meeting him, but he saw me and came running towards me. It was no use pretending that I had not seen him, so I waved to him. I never enjoymeeting Bert Dyes. He never has anything to do. No matter how busy you are, he always insists on coming with you. I had to thinof a way of preventing him from following me around all morning. 'Hullo, Bert,' I said. 'Fancy meeting you here !' 'Hullo, Elizabeth,' Bert answered. ' I was just wondering how to spend the morning--until I saw you. You're not busy doing anything, are you ?' ' No, not at all,' I answered.' I'm going to.. .' 'Would you mind my coming with you ?' he asked, before I had finished speaking. ‘ Not at all,' I lied, 'but I'm going to the dentist.' ' Then I'll come with you,' he answered.' There's always plenty to read in the 'waiting room !' lesson69 But not murder! 并非谋杀！ I was being tested for a driving licence for the third time. I had been asked to drive in heavy traffic and had done so successfully. After having been instructed to drive out of town, I began to acquire confidence. Sure that I had passed, I was almost beginning to enjoy my test. The examiner must have been pleased with my performance, for he smiled and said, 'Just one more thing, Mr Eames. Let us suppose that a child suddenly crosses the road in front of you. As soon as I tap on the window, I want the car to be stopped immediately.' I continued driving and after some time, the examiner tapped loudly. Though the sound could be heard clearly, it too me a long time to react. I suddenly pressed the brae pedal hard and we were both thrown forward. The examiner looed at me sadly. 'Mr Eames,' he said, in a mournful voice,' you have just killed that child !' lesson70 Red for danger 危险的红色 During a bullfight, a drunsuddenly wandered into the middle of the ring. The crowd began to shout, but the drunk was unaware of the danger. The bull was busy with the matador at the time, but it suddenly caught sight of the drun who was shouting rude remarks and waving a red cap. Apparently sensitive to criticism, the bull forgot all about the matador and charged at the drun. The crowd suddenly grew quiet. The drunhowever, seemed quite sure of himself. When the bull got close to him, he clumsily stepped aside to let it pass. The crowd broe into cheers and the drun bowed. By this time, however, three men had come into the ring and they quicly dragged the drun to safety. Even the bull seemed to feel sorry for him, for it looed on sympathetically until the drun was out of the way before once more turning its attention to the matador. Lesson71 A famous clock 一个著名的大钟 When you visit London, one of the first things you will see is Big Ben, the famous cloc which can be heard all over the world on the B.B.C. If the Houses of Parliament had hot been burned down in 1834, the great clock would never have been erected. Big Ben taes its name from Sir Benjamin Hall who was responsible for the making of the cloc when the new Houses of Parliament were being built. It is not only of immense size, but is extremely accurate as well. Officials from Greenwich Observatory have the clock checked twice a day. On the B.B.C. you can hear the clock when it is actually striking because microphones are connected to the clock tower. Big Ben has rarely gone wrong. Once, however, it failed to give the correct time. A painter who had been woring on the tower hung a pot of paint on one of the hands and slowed it down ! Lesson72 A car called Bluebird “蓝鸟”汽车 The great racing driver, Sir Malcolm Campbell, was the first man to drive at over 300 miles per hour. He set up a new world record in September 1935 at Bonneville Salt Flats, Utah. Bluebird, the car he was driving, had been specially built for him. It was over 30 feet in length and had a 2500 horse-power engine. Although Campbell reached a speed of over 304 miles per hour, he had great difficulty in controlling the car because a tyre burst during the first run. After his attempt, Campbell was disappointed to learn that his average speed had been 299 miles per hour. However, a few days later, he was told that a mistake had been made. His average speed had been 301 miles per hour. Since that time, racing drivers have reached speeds of over 400 miles an hour. Following is father's footsteps many years later, Sir Malcolm's son, Donald, also set up a world record. Like his father, he was driving a car called Bluebird. Lesson73 The record-holder 纪录保持者 Little boys who play truant from school are unimaginative. A quiet day's fishing, or eight hours in a cinema seeing the same film over and over again, is usually as far as they get. They have all been put to shame by a boy who, while playing truant, travelled 1600 miles. He hitch- hiked to Dover and, towards evening, went into a boat to find somewhere to sleep. When he woe up next morning, he discovered that the boat had, in the meantime, travelled to Calais. No one noticed the boy as he crept off. From there, he hitch-hiked to Paris in a lorry. The driver gave him a few biscuits and a cup of coffee and left him just outside the city. The next car the boy stopped did not tae him into the centre of Paris as he hoped it would, but to Perpignan on the French-Spanish border. There he was piced up by a policeman and sent backto England by the local authorities. He has surely set up a record for the thousands of boys who dream of evading school. Lesson74 Out of the limelight 舞台之外 An ancient bus stopped by a dry river bed and a party of famous actors and actresses got off. Dressed in dar glasses and old clothes, they had taken special precautions so that no one should recognize them. But as they soon discovered, disguises can sometimes be too perfect. 'This is a wonderful place for a picnic,' said Gloria Gleam. ' It couldn't be better, Gloria,' Brinsley Meers agreed. 'No newspaper men, no film fans! Wh don't we come more often ?' Meanwhile, two other actors, Rocwall Slinger and Merlin Greeves, had carried two large food baskets to a shady spot under some trees. When they had all made themselves comfortable, a stranger appeared. He looked very angry. 'Now ou gut out of here, all of you!' he shouted: ' I'm sheriff here. Do you see that notice ? It says\in case you can't read !' ' Look, sheriff, 'said Rocwall,' don't be too hard on us. I'm Rocwall Slinger and this is Merlin Greeves.' ' Oh, is it ?' said the sheriff with a sneer. 'Well, I'm Brinksley Meers, and my other name is Gloria Gleam. Now you get out of here fast !' lesson75 SOS 呼救信号 When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed. The only passengers, a young woman and her two baby daughters, were unhurt. It was the middle of winter. Snow lay thic on the ground. The woman knew that the nearest village was miles away. When it grew dark. she turned a suitcase into a bed and put the children inside it, covering them with all the clothes she could find. During the night, it got terribly cold. The woman kept as near as she could to the children and even tried to get into the case herself, but it was too small. Early ,next morning she heard planes passing overhead and wondered how she could send a signal. Then she had an idea. She stamped out the letters' SOS' in the snow. Fortunately, a pilot saw the signal and sent a message by radio to the nearest town. It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash. Lesson76 April Fools Day 愚人节 'To end our special news bulletin,' said the voice of the television announcer,' we are taking you to the macaroni fields of Calabria. Macaroni has been grown in this area for over six hundred years. Two of the leading growers, Giuseppe Moldova and Ricardo Brabante, tell me that they have been expecting a splendid crop this year and harvesting has begun earlier than usual. Here you can see two workers who, between them, have just finished cutting three cart-loads of golden brown macaroni stalks. The whole village has been woring day and night gathering and threshing this year's crop before the September rains. On the right, you can see Mrs Brabante herself. She has been helping her husband for thirty years now. Mrs Brabante is talking to the manager of the local factory where the crop is processed. This last scene shows you what will happen at the end of the harvest : the famous Calabrian macaroni-eating competition ! Signor Fratelli, the present champion, has won it every year since 1961. And that ends our special bulletin for today, Thursday, April 1st. We are now returning you to the studio.' Lesson77 A successful operation 一例成功的手术 The mummy of an Egyptian woman who died in 800 B.C. has just had an operation. The mummy is that of Shepenmut who was once a singer in the Temple of Thebes. As there were strange marks on the X-ray plates taken of the mummy, doctors have been trying to find out whether the woman died of a rare disease. The only way to do this was to operate. The operation, which lasted for over four hours, proved to be very difficult because of the hard resin which covered the skin. The doctors removed a section of the mummyand sent it to a laboratory. They also found something which the X-ray of the god Duamutef. This god which has the head of a cow was normally placed inside a mummy. The doctors have not yet decided how the woman died. They feared that the mummy would fall to pieces when they cut it open, but fortunately this has not happened. The mummy successfully survived the operation. Lesson78 The last one? 最后一枝吗？ After reading an article entitled 'Cigarette Smoking and Your Health' I lit a cigarette to calm my nerves. I smoked with concentration and pleasure as I was sure that this would be my last cigarette. For a whole week I did not smoe at all and during this time, my wife suffered terribly. I had all the usual symptoms of someone giving up smoing: a bad temper and an enormous appetite. My friends ept on offering me cigarettes and cigars. They made no effort to hide their amusement whenever I produced a packet of sweets from my pocket. After seven days of this I went to a party. Everybody around me was smoking and I felt extremely uncomfortable. When my old friend Brian urged me to accept a cigarette, it was more than I could bear. I too one guiltily, lit it and smoked with satisfaction. My wife was delighted that things had returned to normal once more. Anywayas Brian pointed out, it is the easiest thing in the world to give up smoking. He himself has done it lots of times! Lesson79 By air 乘飞机 I used to travel by air a great deal when I was a boy. M parents, used to live in South America and I used to fly there from Europe in the holidays. An airhostess would tae charge of me and I never had an unpleasant experience. I am used to travelling byair and only on one occasion have I ever felt frightened. After taking off, we were flying low over the city and slowlygaining height, when the plane suddenly turned round and flew back to the airport. While we were waiting to land, an air-hostess told us to eep calm and to get off the plane quietly as soon as it had touched down. Everybody on board was worried and we were curious to find out what had happened. Later we learnt that there was a very important person on board. The police had been told that a bomb had been planted on the plane. After we had landed, the plane was searched thoroughly. Fortunately, nothing was found and five hours later we were able to take off again. Lesson80 The Crystal Palace 水晶宫Perhaps the most extraordinary building of the nineteenth century was the Crystal Palace, which was built in Hyde Park for the Great Exhibition of 1851. The Crystal Palace was different from all other buildings in the world, for it was made of iron and glass. It was one of the biggest buildings of all time and a lot of people from man countries came to see it. A great many goods were sent to the exhibition from various parts of the world. There was also a great deal of machinery on display. The most wonderful piece of machinery on show was Nasmyth's steam hammer. Though in those days, travelling was not as easy as it is today, steam boats carried thousands of visitors across the Channel from Europe. On arriving in England, they were taken to the Crystal Palace b train. There were six million visitors in all, and the profits from the exhibition were used to build museums and colleges. Later, the Crystal Palace was moved to South London. It remained one of the most famous buildings in the world until it was burnt down in 1936. Lesson81 Escape 脱逃 When he had killed the guard, the prisoner of war quicly dragged him into the bushes. Woring rapidly in the darness, he soon changed into the dead man's clothes. Now, dressed in a blue uniform and with a rifle over his shoulder, the prisoner marched boldly up and down in front of the camp. He could hear shouting in the camp itself. Lights were blazing and men were

have shown interest in this new and unusual sport. But though air cyclists may learn how to fly over short distances, and may, eventually, even get across the English Channel, it is doubtful whether they will ever cycle across the Atlantic. Lesson67 Volcanoes 火山 Haroun Tazieff the Polish scientist, has spent his life-time studying active volcanoes and deep caves in all parts of the world. In 1948, he went to lae Kivu in the Congo to observe a new volcano which he later named Kituro. Tazieff was able to set up his camp very close to the volcano while it was erupting violently. Though he managed to take a number of brilliant photographs, he could not stay near the volcano for very long. He noticed that a river of liquid roc was coming towards him. It threatened to surround him completely, but Tazieff managed to escape just in time. He waited until the volcano became quiet and he was able to return two days later. This time, he managed to climb into the mouth of Kituro so that he could take photographsand measure temperatures. Tazieff has often risked his life in this way. He has been able to tell us more about active volcanoes than any man alive. Lesson68 Persistent 纠缠不休 I crossed the street to avoid meeting him, but he saw me and came running towards me. It was no use pretending that I had not seen him, so I waved to him. I never enjoy meeting Bert Dyes. He never has anything to do. No matter how busy you are, he always insists on coming with you. I had to thin of a way of preventing him from following me around all morning. 'Hullo, Bert,' I said. 'Fancy meeting you here !' 'Hullo, Elizabeth,' Bert answered. ' I was just wondering how to spend the morning--until I saw you. You're not busy doing anything, are you ?' ' No, not at all,' I answered.' I'm going to.. .' 'Would you mind my coming with you ?' he asked, before I had finished speaing. ‘ Not at all,' I lied, 'but I'm going to the dentist.' ' Then I'll come with you,' he answered.' There's always plenty to read in the 'waiting room !' lesson69 But not murder! 并非谋杀！ I was being tested for a driving licence for the third time. I had been asked to drive in heavy traffic and had done so successfully. After having been instructed to drive out of town, I began to acquire confidence. Sure that I had passed, I was almost beginning to enjoy my test. The examiner must have been pleased with my performance, for he smiled and said, 'Just one more thing, Mr Eames. Let us suppose that a child suddenly crosses the road in front of you. As soon as I tap on the window, I want the car to be stopped immediately.' I continued driving and after some time, the examiner tapped loudly. Though the sound could be heard clearly, it too me a long time to react. I suddenly pressed the brae pedal hard and we were both thrown forward. The examiner looed at me sadly. 'Mr Eames,' he said, in a mournful voice,' you have just killed that child !' lesson70 Red for danger 危险的红色During a bullfight, a drun suddenly wandered into the middle of the ring. The crowd began to shout, but the drunk was unaware of the danger. The bull was busy with the matador at the time, but it suddenly caught sight of the drun who was shouting rude remarks and waving a red cap. Apparently sensitive to criticism, the bull forgot all about the matador and charged at the drunk. The crowd suddenly grew quiet. The drun, however, seemed quite sure of himself. When the bull got close to him, he clumsily stepped aside to let it pass. The crowd broe into cheers and the drun bowed. By this time, however, three men had come into the ring and they quickly dragged the drun to safety. Even the bull seemed to feel sorry for him, for it looed on sympathetically until the drun was out of the way before once more turning its attention to the matador. Lesson71 A famous cloc一个著名的大钟 When ou visit London, one of the first things you will see is Big Ben, the famous clock which can be heard all over the world on the B.B.C. If the Houses of Parliament had hot been burned down in 1834, the great cloc would never have beenerected. Big Ben taes its name from Sir Benjamin Hall who was responsible for the making of the cloc when the new Houses of Parliament were being built. It is not only of immense size, but is extremelyaccurate as well. Officials from Greenwich Observator have the clock checked twice a day. On the B.B.C. you can hear the clock when it is actually striking because microphones are connected to the cloc tower. Big Ben has rarely gone wrong. Once, however, it failed to give the correct time. A painter who had been working on the tower hung a pot of paint on one of the hands and slowed it down ! Lesson72 A car called Bluebird “蓝鸟”汽车 The great racing driver, Sir Malcolm Campbell, was the first man to drive at over 300 miles per hour. He set up a new world record in September 1935 at Bonneville Salt Flats, Utah. Bluebird, the car he was driving, had been specially built for him. It was over 30 feet in length and had a 2500 horse-power engine. Although Campbell reached a speed of over 304 miles per hour, he had great difficulty in controlling the car because a tyre burst during the first run. After his attempt, Campbell was disappointed to learn that his average speed had been 299 miles per hour. However, a few days later, he was told that a mistae had been made. His average speed had been 301 miles per hour. Since that time, racing drivers have reached speeds of over 400 miles an hour. Following his father's footsteps many years later, Sir Malcolm's son, Donald, also set up a world record. Like his father, he was driving a car called Bluebird. Lesson73 The record-holder 纪录保持者 Little boys who play truant from school are unimaginative. A quiet day's fishing, or eight hours in a cinema seeing the same film over and over again, is usually as far as they get. They have all been put to shame by a boy who, while playing truant, travelled 1600 miles. He hitch- hiked to Dover and, towards evening, went into a boat to find somewhere to sleep. When he woe up next morning, he discovered that the boat had, in themeantime, travelled to Calais. No one noticed the boy as he crept off. From there, he hitch-hiked to Paris in a lorry. The driver gave him a few biscuits and a cup of coffee and left him just outside the city. The next car the boy stopped did not tae him into the centre of Paris as he hoped it would, but to Perpignan on the French-Spanish border. There he was ped up by a policeman and sent bacto England by the local authorities. He has surely set up a record for the thousands of boys who dream of evading school. Lesson74 Out of the limelight 舞台之外 An ancient bus stopped by a dry river bed and a party of famous actors and actresses got off. Dressed in dark glasses and old clothes, they had taen special precautions so that no one should recognize them. But as they soon discovered, disguises can sometimes be too perfect. 'This is a wonderful place for a picnic,' said Gloria Gleam. ' It couldn't be better, Gloria,' Brinsley Meers agreed. 'No newspaper men, no film fans! Why don't we come more often ?' Meanwhile, two other actors, Rocwall Slinger and Merlin Greeves, had carried two large food baskets to a shady spot under some trees. When they had all made themselves comfortable, a stranger appeared. He looked very angry. 'Now you gut out of here, all of you!' he shouted: ' I'm sheriff here. Do you see that notice ? It sas\\ou can't read !' ' Look, sheriff, 'said Rocwall,' don't be too hard on us. I'm Rockwall Slinger and this is Merlin Greeves.' ' Oh, is it ?' said the sheriff with a sneer. 'Well, I'm Brinsley Meers, and my other name is Gloria Gleam. Now you get out of here fast !' lesson75 SOS 呼救信号 When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was illed. The only passengers, a young woman and her two baby daughters, were unhurt. It was the middle of winter. Snow lay thic on the ground. The woman knew that the nearest village was miles away. When it grew dark she turned a suitcase into a bed and put the children inside it, covering them with all the clothes she could find. During the night, it got terribly cold. The woman ept as near as she could to the children and even tried to get into the case herself, but it was too small. Early ,next morning she heard planes passing overhead and wondered how she could send a signal. Then she had an idea. She stamped out the letters' SOS' in the snow. Fortunately, a pilot saw the signal and sent a message by radio to the nearest town. It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash. Lesson76 April Fools Day 愚人节'To end our special news bulletin,' said the voice of the television announcer,' we are taking you to the macaroni fields of Calabria. Macaroni has been grown in this area for over six hundred years. Two of the leading growers, Giuseppe Moldova and Ricardo Brabante, tell me that they have been expecting a splendid crop this year and harvesting has begun earlier than usual. Here you can see two workers who, between them, have just finished cutting three cart-loads of golden brown macaroni stalks. The whole village has been working day and night gathering and threshing this year's crop before the September rains. On the right, you can see Mrs Brabante herself. She has been helping her husband for thirty years now. Mrs Brabante is talking to the manager of the local factory where the crop is processed. This last scene shows you what will happen at the end of the harvest : the famous Calabrian macaroni-eating competition ! Signor Fratelli, the present champion, has won it every year since 1961. And that ends our special bulletin for today, Thursday, April 1st. We are now returning you to the studio.' Lesson77 A successful operation 一例成功的手术 The mummy of an Egyptian woman who died in 800 B.C. has just had an operation. The mummy is that of Shepenmut who was once a singer in the Temple of Thebes. As there were strange marks on the X-ray plates taken of the mummy, doctors have been trying to find out whether the woman died of a rare disease. The only way to do this was to operate. The operation, which lasted for over four hours, proved to be very difficult because of the hard resin which covered the skin. The doctors removed a section of the mummy and sent it to a laboratory. They also found something which the X-ray of the god Duamutef. This god which has the head of a cow was normally placed inside a mummy. The doctors have not yet decided how the woman died. They feared that the mummy would fall to pieces when they cut it open, but fortunately this has not happened. The mummy successfully survived the operation. Lesson78 The last one?最后一枝吗？ After reading an article entitled 'Cigarette Smoing and Your Health' I lit a cigarette to calm my nerves. I smoked with concentration and pleasure as I was sure that this would be my last cigarette. For a whole week did not smoe at all and during this time, my wife suffered terribly. I had all the usual symptoms of someone giving up smong: a bad temper and an enormous appetite. My friends ept on offering me cigarettes and cigars. They made no effort to hide their amusement whenever I produced a packet of sweets from my pocket. After seven days of this I went to a party. Everybody around me was smoking and I felt extremely uncomfortable. When my old friend Brian urged me to accept a cigarette, it was more than I could bear. I too one guiltily, lit it and smoed with satisfaction. My wife was delighted that things had returned to normal once more. Anyway, as Brian pointed out, it is the easiest thing in the world to give up smoing. He himself has done it lots of times! Lesson79 By air 乘飞机 I used to travel by air a great deal when I was a boy. M parents, used to live in South America and I used to fly there from Europe in the holidays. An airhostess would tae charge of me and I never had an unpleasant experience. I am used to travelling air and only on one occasion have I ever felt frightened. After taking off, we were flying low over the city and slowlygaining height, when the plane suddenly turned round and flew bac to the airport. While we were waiting to land, an air-hostess told us to eep calm and to get off the plane quietly as soon as it had touched down. Everybody on board was worried and we were curious to find out what had happened. Later we learnt that there was a very important person on board. The police had been told that a bomb had been planted on the plane. After we had landed, the plane was searched thoroughly. Fortunately, nothing was found and five hours later we were able to tae off again. Lesson80 The Crystal Palace 水晶宫 Perhaps the most extraordinary building of the nineteenth century was the Crystal Palace, which was built in Hyde Park for the Great Exhibition of 1851. The Crystal Palace was different from all other buildings in the world, for it was made of iron and glass. It was one of the biggest buildings of all time and a lot of people from many countries came to see it. A great many goods were sent to the exhibition from various parts of the world. There was also a great deal of machinery on display. The most wonderful piece of machinery on show was Nasmyth's steam hammer. Though in those days, travelling was not as easy as it is today, steam boats carried thousands of visitors across the Channel from Europe. On arriving in England, they were taken to the Crystal Palace b train. There were six million visitors in all, and the profits from the exhibition were used to build museums and colleges. Later, the Crystal Palace was moved to South London. It remained one of the most famous buildings in the world until it was burnt down in 1936. Lesson81 Escape 脱逃 When he had killed the guard, the prisoner of war quicly dragged him into the bushes. Woring rapidly in the darness, he soon changed into the dead man's clothes. Now, dressed in a blue uniform and with a rifle over his shoulder, the prisoner marched boldly up and down in front of the camp. He could hear shouting in the camp itself. Lights were blazing and men were 1、取水口工程 2、泵站工程 3、净水厂工程 4、供水管道工程 5、配水管道工程 6、自动控制系统 第二章 项目建设的必要性 2.1 乡镇概况

双堡镇位于安顺市西秀区东南部，距安顺市城区40km，位于东经106010′50″，北纬26010′20″。周边分别与宁谷镇、旧州镇、东屯乡、杨武乡、鸡场乡接壤。东西最宽处径距19.8km，南北最长处径距14.9km，总面积134km2，双堡镇驻地座落高程1265-1275m。

根据统计，2004年底，全镇总人口31800人，农业人口27818人，占全镇总人口的87.4%，2004年粮食总产量1.56万吨，油菜籽总产量0.16万吨，烤烟总产量28万公斤，工业总产值0.85亿元，全镇国民生产总值达1.35亿元。 双堡镇经济总体规划发展水平在安顺市西秀区21个乡、镇（办）事处处于前列，各项主要经济技术指标均居各乡、镇（办）前列。

过境主要河流有两条，一是属长江流域的黑秧河，二是属珠江流域的大屯河。 双堡镇为西秀区工贸型综合性重点经济发展乡镇，双堡镇驻地为双堡镇的政治、经济、文化中心。 2.2 供水现状及问题

双堡镇驻地地处长江与珠江流域分水岭地带，现有的供水工程靠钻井抽取地下水作为供水水源，现在主要存在两个问题：

一是供水水质铁和总硬度超标，导致饮用人群多发生胆结石；

二是工程已运行近30年，年久失修，管道漏水严重，加之日供水能力小。 因此，双堡镇驻地现有的供水工程已不能满足现状发展对水质和水量的需求。

2.3 项目建设的必要性

双堡镇驻地近几年来社会经济发展较快，集镇面积已扩展到0.6km2，倚集镇而建的乡镇企业用地面积为0.2km2，周边村寨经济发展快速，农民生活水平明显提高，有1万多农村人口急需水厂供水。随着城镇化进程的加快，人口和产业的集聚，用水量日益增加，乡镇供水的供需矛盾日益突出。随着国家对农村饮水安全的重视，对水质的要求，用水量的标准，都在进一步的规范。

为彻底解决双堡镇驻地用水，提高居民用水标准，保证供水安全可靠，近期兴建日供水0.4万吨的供水工程已经提到议事日程。工程兴建后，将极大改善供

have shown interest in this new and unusual sport. But though air cyclists may learn how to fly over short distances, and may, eventually, even get across the English Channel, it is doubtful whether they will ever cycle across the Atlantic. Lesson67 Volcanoes 火山 Haroun Tazieff the Polish scientist, has spent his life-time studying active volcanoes and deep caves in all parts of the world. In 1948, he went to lae Kivu in the Congo to observe a new volcano which he later named Kituro. Tazieff was able to set up his camp very close to the volcano while it was erupting violently. Though he managed to tae a number of brilliant photographs, he could not stay near the volcano for very long. He noticed that a river of liquid roc was coming towards him. It threatened to surround him completely, but Tazieff managed to escape just in time. He waited until the volcano became quiet and he was able to return two days later. This time, he managed to climb into the mouth of Kituro so that he could tae photographs and measure temperatures. Tazieff has often risked his life in this way. He has been able to tell us more about active volcanoes than any man alive. Lesson68 Persistent 纠缠不休 I crossed the street to avoid meeting him, but he saw me and came running towards me. It was no use pretending that I had not seen him, so I waved to him. I never enjoymeeting Bert Dyes. He never has anything to do. No matter how busy you are, he always insists on coming with you. I had to thinof a way of preventing him from following me around all morning. 'Hullo, Bert,' I said. 'Fancy meeting you here !' 'Hullo, Elizabeth,' Bert answered. ' I was just wondering how to spend the morning--until I saw you. You're not busy doing anything, are you ?' ' No, not at all,' I answered.' I'm going to.. .' 'Would you mind my coming with you ?' he asked, before I had finished speaking. ‘ Not at all,' I lied, 'but I'm going to the dentist.' ' Then I'll come with you,' he answered.' There's always plenty to read in the 'waiting room !' lesson69 But not murder! 并非谋杀！ I was being tested for a driving licence for the third time. I had been asked to drive in heavy traffic and had done so successfully. After having been instructed to drive out of town, I began to acquire confidence. Sure that I had passed, I was almost beginning to enjoy my test. The examiner must have been pleased with my performance, for he smiled and said, 'Just one more thing, Mr Eames. Let us suppose that a child suddenly crosses the road in front of you. As soon as I tap on the window, I want the car to be stopped immediately.' I continued driving and after some time, the examiner tapped loudly. Though the sound could be heard clearly, it too me a long time to react. I suddenly pressed the brae pedal hard and we were both thrown forward. The examiner looed at me sadly. 'Mr Eames,' he said, in a mournful voice,' you have just killed that child !' lesson70 Red for danger 危险的红色 During a bullfight, a drunsuddenly wandered into the middle of the ring. The crowd began to shout, but the drunk was unaware of the danger. The bull was busy with the matador at the time, but it suddenly caught sight of the drun who was shouting rude remarks and waving a red cap. Apparently sensitive to criticism, the bull forgot all about the matador and charged at the drun. The crowd suddenly grew quiet. The drunhowever, seemed quite sure of himself. When the bull got close to him, he clumsily stepped aside to let it pass. The crowd broe into cheers and the drun bowed. By this time, however, three men had come into the ring and they quicly dragged the drun to safety. Even the bull seemed to feel sorry for him, for it looed on sympathetically until the drun was out of the way before once more turning its attention to the matador. Lesson71 A famous clock 一个著名的大钟 When you visit London, one of the first things you will see is Big Ben, the famous cloc which can be heard all over the world on the B.B.C. If the Houses of Parliament had hot been burned down in 1834, the great clock would never have been erected. Big Ben taes its name from Sir Benjamin Hall who was responsible for the making of the cloc when the new Houses of Parliament were being built. It is not only of immense size, but is extremely accurate as well. Officials from Greenwich Observatory have the clock checked twice a day. On the B.B.C. you can hear the clock when it is actually striking because microphones are connected to the clock tower. Big Ben has rarely gone wrong. Once, however, it failed to give the correct time. A painter who had been woring on the tower hung a pot of paint on one of the hands and slowed it down ! Lesson72 A car called Bluebird “蓝鸟”汽车 The great racing driver, Sir Malcolm Campbell, was the first man to drive at over 300 miles per hour. He set up a new world record in September 1935 at Bonneville Salt Flats, Utah. Bluebird, the car he was driving, had been specially built for him. It was over 30 feet in length and had a 2500 horse-power engine. Although Campbell reached a speed of over 304 miles per hour, he had great difficulty in controlling the car because a tyre burst during the first run. After his attempt, Campbell was disappointed to learn that his average speed had been 299 miles per hour. However, a few days later, he was told that a mistake had been made. His average speed had been 301 miles per hour. Since that time, racing drivers have reached speeds of over 400 miles an hour. Following is father's footsteps many years later, Sir Malcolm's son, Donald, also set up a world record. Like his father, he was driving a car called Bluebird. Lesson73 The record-holder 纪录保持者 Little boys who play truant from school are unimaginative. A quiet day's fishing, or eight hours in a cinema seeing the same film over and over again, is usually as far as they get. They have all been put to shame by a boy who, while playing truant, travelled 1600 miles. He hitch- hiked to Dover and, towards evening, went into a boat to find somewhere to sleep. When he woe up next morning, he discovered that the boat had, in the meantime, travelled to Calais. No one noticed the boy as he crept off. From there, he hitch-hiked to Paris in a lorry. The driver gave him a few biscuits and a cup of coffee and left him just outside the city. The next car the boy stopped did not tae him into the centre of Paris as he hoped it would, but to Perpignan on the French-Spanish border. There he was piced up by a policeman and sent backto England by the local authorities. He has surely set up a record for the thousands of boys who dream of evading school. Lesson74 Out of the limelight 舞台之外 An ancient bus stopped by a dry river bed and a party of famous actors and actresses got off. Dressed in dar glasses and old clothes, they had taken special precautions so that no one should recognize them. But as they soon discovered, disguises can sometimes be too perfect. 'This is a wonderful place for a picnic,' said Gloria Gleam. ' It couldn't be better, Gloria,' Brinsley Meers agreed. 'No newspaper men, no film fans! Wh don't we come more often ?' Meanwhile, two other actors, Rocwall Slinger and Merlin Greeves, had carried two large food baskets to a shady spot under some trees. When they had all made themselves comfortable, a stranger appeared. He looked very angry. 'Now ou gut out of here, all of you!' he shouted: ' I'm sheriff here. Do you see that notice ? It says\in case you can't read !' ' Look, sheriff, 'said Rocwall,' don't be too hard on us. I'm Rocwall Slinger and this is Merlin Greeves.' ' Oh, is it ?' said the sheriff with a sneer. 'Well, I'm Brinksley Meers, and my other name is Gloria Gleam. Now you get out of here fast !' lesson75 SOS 呼救信号 When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed. The only passengers, a young woman and her two baby daughters, were unhurt. It was the middle of winter. Snow lay thic on the ground. The woman knew that the nearest village was miles away. When it grew dark. she turned a suitcase into a bed and put the children inside it, covering them with all the clothes she could find. During the night, it got terribly cold. The woman kept as near as she could to the children and even tried to get into the case herself, but it was too small. Early ,next morning she heard planes passing overhead and wondered how she could send a signal. Then she had an idea. She stamped out the letters' SOS' in the snow. Fortunately, a pilot saw the signal and sent a message by radio to the nearest town. It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash. Lesson76 April Fools Day 愚人节 'To end our special news bulletin,' said the voice of the television announcer,' we are taking you to the macaroni fields of Calabria. Macaroni has been grown in this area for over six hundred years. Two of the leading growers, Giuseppe Moldova and Ricardo Brabante, tell me that they have been expecting a splendid crop this year and harvesting has begun earlier than usual. Here you can see two workers who, between them, have just finished cutting three cart-loads of golden brown macaroni stalks. The whole village has been woring day and night gathering and threshing this year's crop before the September rains. On the right, you can see Mrs Brabante herself. She has been helping her husband for thirty years now. Mrs Brabante is talking to the manager of the local factory where the crop is processed. This last scene shows you what will happen at the end of the harvest : the famous Calabrian macaroni-eating competition ! Signor Fratelli, the present champion, has won it every year since 1961. And that ends our special bulletin for today, Thursday, April 1st. We are now returning you to the studio.' Lesson77 A successful operation 一例成功的手术 The mummy of an Egyptian woman who died in 800 B.C. has just had an operation. The mummy is that of Shepenmut who was once a singer in the Temple of Thebes. As there were strange marks on the X-ray plates taken of the mummy, doctors have been trying to find out whether the woman died of a rare disease. The only way to do this was to operate. The operation, which lasted for over four hours, proved to be very difficult because of the hard resin which covered the skin. The doctors removed a section of the mummyand sent it to a laboratory. They also found something which the X-ray of the god Duamutef. This god which has the head of a cow was normally placed inside a mummy. The doctors have not yet decided how the woman died. They feared that the mummy would fall to pieces when they cut it open, but fortunately this has not happened. The mummy successfully survived the operation. Lesson78 The last one? 最后一枝吗？ After reading an article entitled 'Cigarette Smoking and Your Health' I lit a cigarette to calm my nerves. I smoked with concentration and pleasure as I was sure that this would be my last cigarette. For a whole week I did not smoe at all and during this time, my wife suffered terribly. I had all the usual symptoms of someone giving up smoing: a bad temper and an enormous appetite. My friends ept on offering me cigarettes and cigars. They made no effort to hide their amusement whenever I produced a packet of sweets from my pocket. After seven days of this I went to a party. Everybody around me was smoking and I felt extremely uncomfortable. When my old friend Brian urged me to accept a cigarette, it was more than I could bear. I too one guiltily, lit it and smoked with satisfaction. My wife was delighted that things had returned to normal once more. Anywayas Brian pointed out, it is the easiest thing in the world to give up smoking. He himself has done it lots of times! Lesson79 By air 乘飞机 I used to travel by air a great deal when I was a boy. M parents, used to live in South America and I used to fly there from Europe in the holidays. An airhostess would tae charge of me and I never had an unpleasant experience. I am used to travelling byair and only on one occasion have I ever felt frightened. After taking off, we were flying low over the city and slowlygaining height, when the plane suddenly turned round and flew back to the airport. While we were waiting to land, an air-hostess told us to eep calm and to get off the plane quietly as soon as it had touched down. Everybody on board was worried and we were curious to find out what had happened. Later we learnt that there was a very important person on board. The police had been told that a bomb had been planted on the plane. After we had landed, the plane was searched thoroughly. Fortunately, nothing was found and five hours later we were able to take off again. Lesson80 The Crystal Palace 水晶宫Perhaps the most extraordinary building of the nineteenth century was the Crystal Palace, which was built in Hyde Park for the Great Exhibition of 1851. The Crystal Palace was different from all other buildings in the world, for it was made of iron and glass. It was one of the biggest buildings of all time and a lot of people from man countries came to see it. A great many goods were sent to the exhibition from various parts of the world. There was also a great deal of machinery on display. The most wonderful piece of machinery on show was Nasmyth's steam hammer. Though in those days, travelling was not as easy as it is today, steam boats carried thousands of visitors across the Channel from Europe. On arriving in England, they were taken to the Crystal Palace b train. There were six million visitors in all, and the profits from the exhibition were used to build museums and colleges. Later, the Crystal Palace was moved to South London. It remained one of the most famous buildings in the world until it was burnt down in 1936. Lesson81 Escape 脱逃 When he had killed the guard, the prisoner of war quicly dragged him into the bushes. Woring rapidly in the darness, he soon changed into the dead man's clothes. Now, dressed in a blue uniform and with a rifle over his shoulder, the prisoner marched boldly up and down in front of the camp. He could hear shouting in the camp itself. Lights were blazing and men were

have shown interest in this new and unusual sport. But though air cyclists may learn how to fly over short distances, and may, eventually, even get across the English Channel, it is doubtful whether they will ever cycle across the Atlantic. Lesson67 Volcanoes 火山 Haroun Tazieff the Polish scientist, has spent his life-time studying active volcanoes and deep caves in all parts of the world. In 1948, he went to lae Kivu in the Congo to observe a new volcano which he later named Kituro. Tazieff was able to set up his camp very close to the volcano while it was erupting violently. Though he managed to take a number of brilliant photographs, he could not stay near the volcano for very long. He noticed that a river of liquid roc was coming towards him. It threatened to surround him completely, but Tazieff managed to escape just in time. He waited until the volcano became quiet and he was able to return two days later. This time, he managed to climb into the mouth of Kituro so that he could take photographsand measure temperatures. Tazieff has often risked his life in this way. He has been able to tell us more about active volcanoes than any man alive. Lesson68 Persistent 纠缠不休 I crossed the street to avoid meeting him, but he saw me and came running towards me. It was no use pretending that I had not seen him, so I waved to him. I never enjoy meeting Bert Dyes. He never has anything to do. No matter how busy you are, he always insists on coming with you. I had to thin of a way of preventing him from following me around all morning. 'Hullo, Bert,' I said. 'Fancy meeting you here !' 'Hullo, Elizabeth,' Bert answered. ' I was just wondering how to spend the morning--until I saw you. You're not busy doing anything, are you ?' ' No, not at all,' I answered.' I'm going to.. .' 'Would you mind my coming with you ?' he asked, before I had finished speaing. ‘ Not at all,' I lied, 'but I'm going to the dentist.' ' Then I'll come with you,' he answered.' There's always plenty to read in the 'waiting room !' lesson69 But not murder! 并非谋杀！ I was being tested for a driving licence for the third time. I had been asked to drive in heavy traffic and had done so successfully. After having been instructed to drive out of town, I began to acquire confidence. Sure that I had passed, I was almost beginning to enjoy my test. The examiner must have been pleased with my performance, for he smiled and said, 'Just one more thing, Mr Eames. Let us suppose that a child suddenly crosses the road in front of you. As soon as I tap on the window, I want the car to be stopped immediately.' I continued driving and after some time, the examiner tapped loudly. Though the sound could be heard clearly, it too me a long time to react. I suddenly pressed the brae pedal hard and we were both thrown forward. The examiner looed at me sadly. 'Mr Eames,' he said, in a mournful voice,' you have just killed that child !' lesson70 Red for danger 危险的红色During a bullfight, a drun suddenly wandered into the middle of the ring. The crowd began to shout, but the drunk was unaware of the danger. The bull was busy with the matador at the time, but it suddenly caught sight of the drun who was shouting rude remarks and waving a red cap. Apparently sensitive to criticism, the bull forgot all about the matador and charged at the drunk. The crowd suddenly grew quiet. The drun, however, seemed quite sure of himself. When the bull got close to him, he clumsily stepped aside to let it pass. The crowd broe into cheers and the drun bowed. By this time, however, three men had come into the ring and they quickly dragged the drun to safety. Even the bull seemed to feel sorry for him, for it looed on sympathetically until the drun was out of the way before once more turning its attention to the matador. Lesson71 A famous cloc一个著名的大钟 When ou visit London, one of the first things you will see is Big Ben, the famous clock which can be heard all over the world on the B.B.C. If the Houses of Parliament had hot been burned down in 1834, the great cloc would never have beenerected. Big Ben taes its name from Sir Benjamin Hall who was responsible for the making of the cloc when the new Houses of Parliament were being built. It is not only of immense size, but is extremelyaccurate as well. Officials from Greenwich Observator have the clock checked twice a day. On the B.B.C. you can hear the clock when it is actually striking because microphones are connected to the cloc tower. Big Ben has rarely gone wrong. Once, however, it failed to give the correct time. A painter who had been working on the tower hung a pot of paint on one of the hands and slowed it down ! Lesson72 A car called Bluebird “蓝鸟”汽车 The great racing driver, Sir Malcolm Campbell, was the first man to drive at over 300 miles per hour. He set up a new world record in September 1935 at Bonneville Salt Flats, Utah. Bluebird, the car he was driving, had been specially built for him. It was over 30 feet in length and had a 2500 horse-power engine. Although Campbell reached a speed of over 304 miles per hour, he had great difficulty in controlling the car because a tyre burst during the first run. After his attempt, Campbell was disappointed to learn that his average speed had been 299 miles per hour. However, a few days later, he was told that a mistae had been made. His average speed had been 301 miles per hour. Since that time, racing drivers have reached speeds of over 400 miles an hour. Following his father's footsteps many years later, Sir Malcolm's son, Donald, also set up a world record. Like his father, he was driving a car called Bluebird. Lesson73 The record-holder 纪录保持者 Little boys who play truant from school are unimaginative. A quiet day's fishing, or eight hours in a cinema seeing the same film over and over again, is usually as far as they get. They have all been put to shame by a boy who, while playing truant, travelled 1600 miles. He hitch- hiked to Dover and, towards evening, went into a boat to find somewhere to sleep. When he woe up next morning, he discovered that the boat had, in themeantime, travelled to Calais. No one noticed the boy as he crept off. From there, he hitch-hiked to Paris in a lorry. The driver gave him a few biscuits and a cup of coffee and left him just outside the city. The next car the boy stopped did not tae him into the centre of Paris as he hoped it would, but to Perpignan on the French-Spanish border. There he was ped up by a policeman and sent bacto England by the local authorities. He has surely set up a record for the thousands of boys who dream of evading school. Lesson74 Out of the limelight 舞台之外 An ancient bus stopped by a dry river bed and a party of famous actors and actresses got off. Dressed in dark glasses and old clothes, they had taen special precautions so that no one should recognize them. But as they soon discovered, disguises can sometimes be too perfect. 'This is a wonderful place for a picnic,' said Gloria Gleam. ' It couldn't be better, Gloria,' Brinsley Meers agreed. 'No newspaper men, no film fans! Why don't we come more often ?' Meanwhile, two other actors, Rocwall Slinger and Merlin Greeves, had carried two large food baskets to a shady spot under some trees. When they had all made themselves comfortable, a stranger appeared. He looked very angry. 'Now you gut out of here, all of you!' he shouted: ' I'm sheriff here. Do you see that notice ? It sas\\ou can't read !' ' Look, sheriff, 'said Rocwall,' don't be too hard on us. I'm Rockwall Slinger and this is Merlin Greeves.' ' Oh, is it ?' said the sheriff with a sneer. 'Well, I'm Brinsley Meers, and my other name is Gloria Gleam. Now you get out of here fast !' lesson75 SOS 呼救信号 When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was illed. The only passengers, a young woman and her two baby daughters, were unhurt. It was the middle of winter. Snow lay thic on the ground. The woman knew that the nearest village was miles away. When it grew dark she turned a suitcase into a bed and put the children inside it, covering them with all the clothes she could find. During the night, it got terribly cold. The woman ept as near as she could to the children and even tried to get into the case herself, but it was too small. Early ,next morning she heard planes passing overhead and wondered how she could send a signal. Then she had an idea. She stamped out the letters' SOS' in the snow. Fortunately, a pilot saw the signal and sent a message by radio to the nearest town. It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash. Lesson76 April Fools Day 愚人节'To end our special news bulletin,' said the voice of the television announcer,' we are taking you to the macaroni fields of Calabria. Macaroni has been grown in this area for over six hundred years. Two of the leading growers, Giuseppe Moldova and Ricardo Brabante, tell me that they have been expecting a splendid crop this year and harvesting has begun earlier than usual. Here you can see two workers who, between them, have just finished cutting three cart-loads of golden brown macaroni stalks. The whole village has been working day and night gathering and threshing this year's crop before the September rains. On the right, you can see Mrs Brabante herself. She has been helping her husband for thirty years now. Mrs Brabante is talking to the manager of the local factory where the crop is processed. This last scene shows you what will happen at the end of the harvest : the famous Calabrian macaroni-eating competition ! Signor Fratelli, the present champion, has won it every year since 1961. And that ends our special bulletin for today, Thursday, April 1st. We are now returning you to the studio.' Lesson77 A successful operation 一例成功的手术 The mummy of an Egyptian woman who died in 800 B.C. has just had an operation. The mummy is that of Shepenmut who was once a singer in the Temple of Thebes. As there were strange marks on the X-ray plates taken of the mummy, doctors have been trying to find out whether the woman died of a rare disease. The only way to do this was to operate. The operation, which lasted for over four hours, proved to be very difficult because of the hard resin which covered the skin. The doctors removed a section of the mummy and sent it to a laboratory. They also found something which the X-ray of the god Duamutef. This god which has the head of a cow was normally placed inside a mummy. The doctors have not yet decided how the woman died. They feared that the mummy would fall to pieces when they cut it open, but fortunately this has not happened. The mummy successfully survived the operation. Lesson78 The last one?最后一枝吗？ After reading an article entitled 'Cigarette Smoing and Your Health' I lit a cigarette to calm my nerves. I smoked with concentration and pleasure as I was sure that this would be my last cigarette. For a whole week did not smoe at all and during this time, my wife suffered terribly. I had all the usual symptoms of someone giving up smong: a bad temper and an enormous appetite. My friends ept on offering me cigarettes and cigars. They made no effort to hide their amusement whenever I produced a packet of sweets from my pocket. After seven days of this I went to a party. Everybody around me was smoking and I felt extremely uncomfortable. When my old friend Brian urged me to accept a cigarette, it was more than I could bear. I too one guiltily, lit it and smoed with satisfaction. My wife was delighted that things had returned to normal once more. Anyway, as Brian pointed out, it is the easiest thing in the world to give up smoing. He himself has done it lots of times! Lesson79 By air 乘飞机 I used to travel by air a great deal when I was a boy. M parents, used to live in South America and I used to fly there from Europe in the holidays. An airhostess would tae charge of me and I never had an unpleasant experience. I am used to travelling air and only on one occasion have I ever felt frightened. After taking off, we were flying low over the city and slowlygaining height, when the plane suddenly turned round and flew bac to the airport. While we were waiting to land, an air-hostess told us to eep calm and to get off the plane quietly as soon as it had touched down. Everybody on board was worried and we were curious to find out what had happened. Later we learnt that there was a very important person on board. The police had been told that a bomb had been planted on the plane. After we had landed, the plane was searched thoroughly. Fortunately, nothing was found and five hours later we were able to tae off again. Lesson80 The Crystal Palace 水晶宫 Perhaps the most extraordinary building of the nineteenth century was the Crystal Palace, which was built in Hyde Park for the Great Exhibition of 1851. The Crystal Palace was different from all other buildings in the world, for it was made of iron and glass. It was one of the biggest buildings of all time and a lot of people from many countries came to see it. A great many goods were sent to the exhibition from various parts of the world. There was also a great deal of machinery on display. The most wonderful piece of machinery on show was Nasmyth's steam hammer. Though in those days, travelling was not as easy as it is today, steam boats carried thousands of visitors across the Channel from Europe. On arriving in England, they were taken to the Crystal Palace b train. There were six million visitors in all, and the profits from the exhibition were used to build museums and colleges. Later, the Crystal Palace was moved to South London. It remained one of the most famous buildings in the world until it was burnt down in 1936. Lesson81 Escape 脱逃 When he had killed the guard, the prisoner of war quicly dragged him into the bushes. Woring rapidly in the darness, he soon changed into the dead man's clothes. Now, dressed in a blue uniform and with a rifle over his shoulder, the prisoner marched boldly up and down in front of the camp. He could hear shouting in the camp itself. Lights were blazing and men were 水不足的状况，提高饮水安全程度，促进当地经济发展，加快农村城镇化建设的步伐具有重要作用，因而尽早兴建本工程是非常迫切和必要的。 第三章 项目建设条件 3.1 水文概况

双堡镇驻地供水工程区域，地势平坦，岩溶发育，地下通道众多，但地下水源水质含铁量和总硬度超标，饮用后易患胆结石，由于受众多因素的制约，该区域还在饮用不安全水源。

该区域主要土壤为黄色残积壤土，植被区划属黔中灰岩山原常绿栎林，常绿落叶混交林与马尾松林区，森林覆盖率为10%。 3.2 气象概况

双堡镇区域属亚热带温和气候区，冬无严寒，夏无酷暑，气候宜人。根据平寨水文站1960年至2004年资料分析，多年平均气温16.4℃，极端最高气温34.3℃（1953年8月13日），极端最低气温－7.6℃（1977年2月9日），最冷月一月均温4.2℃，最热月七月均温21.9℃；多年平均相对湿度80%，多年平均风速2.4m/s，多年平均最大风速13.0m/s，多年平均日照时数1300h，日照百分率28%，大风日数12天（多出现在4—5月），平均雾日数17.6天。

该区受普（定）郎（岱）降雨高值区影响，多年平均降水量1226.4mm，多年平均最大一日降水量98.3mm，实测年最大降水量1571.4mm（1991年），实测年最小降水量792.7mm（1989年）。大于或等于0.1mm的降水量日数191.4天，大于或等于50.0mm的暴雨日数为3.6天。 第四章 工程项目内容 4.1 供水规模 4.1.1供水范围

双堡镇供水工程供水范围为双堡镇驻地，含乡镇企业，邻近周边村寨。详见《供水范围预算表》 供 水 范 围 预 算 表

期 限 2005 2008 2015 2025 人口规模（万人） 1.1 1.14 1.24 1.4 乡镇建设用地规模（Km） 1.2 1.5 1.9 2.5 2have shown interest in this new and unusual sport. But though air cyclists may learn how to fly over short distances, and may, eventually, even get across the English Channel, it is doubtful whether they will ever cycle across the Atlantic. Lesson67 Volcanoes 火山 Haroun Tazieff the Polish scientist, has spent his life-time studying active volcanoes and deep caves in all parts of the world. In 1948, he went to lae Kivu in the Congo to observe a new volcano which he later named Kituro. Tazieff was able to set up his camp very close to the volcano while it was erupting violently. Though he managed to tae a number of brilliant photographs, he could not stay near the volcano for very long. He noticed that a river of liquid roc was coming towards him. It threatened to surround him completely, but Tazieff managed to escape just in time. He waited until the volcano became quiet and he was able to return two days later. This time, he managed to climb into the mouth of Kituro so that he could tae photographs and measure temperatures. Tazieff has often risked his life in this way. He has been able to tell us more about active volcanoes than any man alive. Lesson68 Persistent 纠缠不休 I crossed the street to avoid meeting him, but he saw me and came running towards me. It was no use pretending that I had not seen him, so I waved to him. I never enjoymeeting Bert Dyes. He never has anything to do. No matter how busy you are, he always insists on coming with you. I had to thinof a way of preventing him from following me around all morning. 'Hullo, Bert,' I said. 'Fancy meeting you here !' 'Hullo, Elizabeth,' Bert answered. ' I was just wondering how to spend the morning--until I saw you. You're not busy doing anything, are you ?' ' No, not at all,' I answered.' I'm going to.. .' 'Would you mind my coming with you ?' he asked, before I had finished speaking. ‘ Not at all,' I lied, 'but I'm going to the dentist.' ' Then I'll come with you,' he answered.' There's always plenty to read in the 'waiting room !' lesson69 But not murder! 并非谋杀！ I was being tested for a driving licence for the third time. I had been asked to drive in heavy traffic and had done so successfully. After having been instructed to drive out of town, I began to acquire confidence. Sure that I had passed, I was almost beginning to enjoy my test. The examiner must have been pleased with my performance, for he smiled and said, 'Just one more thing, Mr Eames. Let us suppose that a child suddenly crosses the road in front of you. As soon as I tap on the window, I want the car to be stopped immediately.' I continued driving and after some time, the examiner tapped loudly. Though the sound could be heard clearly, it too me a long time to react. I suddenly pressed the brae pedal hard and we were both thrown forward. The examiner looed at me sadly. 'Mr Eames,' he said, in a mournful voice,' you have just killed that child !' lesson70 Red for danger 危险的红色 During a bullfight, a drunsuddenly wandered into the middle of the ring. The crowd began to shout, but the drunk was unaware of the danger. The bull was busy with the matador at the time, but it suddenly caught sight of the drun who was shouting rude remarks and waving a red cap. Apparently sensitive to criticism, the bull forgot all about the matador and charged at the drun. The crowd suddenly grew quiet. The drunhowever, seemed quite sure of himself. When the bull got close to him, he clumsily stepped aside to let it pass. The crowd broe into cheers and the drun bowed. By this time, however, three men had come into the ring and they quicly dragged the drun to safety. Even the bull seemed to feel sorry for him, for it looed on sympathetically until the drun was out of the way before once more turning its attention to the matador. Lesson71 A famous clock 一个著名的大钟 When you visit London, one of the first things you will see is Big Ben, the famous cloc which can be heard all over the world on the B.B.C. If the Houses of Parliament had hot been burned down in 1834, the great clock would never have been erected. Big Ben taes its name from Sir Benjamin Hall who was responsible for the making of the cloc when the new Houses of Parliament were being built. It is not only of immense size, but is extremely accurate as well. Officials from Greenwich Observatory have the clock checked twice a day. On the B.B.C. you can hear the clock when it is actually striking because microphones are connected to the clock tower. Big Ben has rarely gone wrong. Once, however, it failed to give the correct time. A painter who had been woring on the tower hung a pot of paint on one of the hands and slowed it down ! Lesson72 A car called Bluebird “蓝鸟”汽车 The great racing driver, Sir Malcolm Campbell, was the first man to drive at over 300 miles per hour. He set up a new world record in September 1935 at Bonneville Salt Flats, Utah. Bluebird, the car he was driving, had been specially built for him. It was over 30 feet in length and had a 2500 horse-power engine. Although Campbell reached a speed of over 304 miles per hour, he had great difficulty in controlling the car because a tyre burst during the first run. After his attempt, Campbell was disappointed to learn that his average speed had been 299 miles per hour. However, a few days later, he was told that a mistake had been made. His average speed had been 301 miles per hour. Since that time, racing drivers have reached speeds of over 400 miles an hour. Following is father's footsteps many years later, Sir Malcolm's son, Donald, also set up a world record. Like his father, he was driving a car called Bluebird. Lesson73 The record-holder 纪录保持者 Little boys who play truant from school are unimaginative. A quiet day's fishing, or eight hours in a cinema seeing the same film over and over again, is usually as far as they get. They have all been put to shame by a boy who, while playing truant, travelled 1600 miles. He hitch- hiked to Dover and, towards evening, went into a boat to find somewhere to sleep. When he woe up next morning, he discovered that the boat had, in the meantime, travelled to Calais. No one noticed the boy as he crept off. From there, he hitch-hiked to Paris in a lorry. The driver gave him a few biscuits and a cup of coffee and left him just outside the city. The next car the boy stopped did not tae him into the centre of Paris as he hoped it would, but to Perpignan on the French-Spanish border. There he was piced up by a policeman and sent backto England by the local authorities. He has surely set up a record for the thousands of boys who dream of evading school. Lesson74 Out of the limelight 舞台之外 An ancient bus stopped by a dry river bed and a party of famous actors and actresses got off. Dressed in dar glasses and old clothes, they had taken special precautions so that no one should recognize them. But as they soon discovered, disguises can sometimes be too perfect. 'This is a wonderful place for a picnic,' said Gloria Gleam. ' It couldn't be better, Gloria,' Brinsley Meers agreed. 'No newspaper men, no film fans! Wh don't we come more often ?' Meanwhile, two other actors, Rocwall Slinger and Merlin Greeves, had carried two large food baskets to a shady spot under some trees. When they had all made themselves comfortable, a stranger appeared. He looked very angry. 'Now ou gut out of here, all of you!' he shouted: ' I'm sheriff here. Do you see that notice ? It says\in case you can't read !' ' Look, sheriff, 'said Rocwall,' don't be too hard on us. I'm Rocwall Slinger and this is Merlin Greeves.' ' Oh, is it ?' said the sheriff with a sneer. 'Well, I'm Brinksley Meers, and my other name is Gloria Gleam. Now you get out of here fast !' lesson75 SOS 呼救信号 When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed. The only passengers, a young woman and her two baby daughters, were unhurt. It was the middle of winter. Snow lay thic on the ground. The woman knew that the nearest village was miles away. When it grew dark. she turned a suitcase into a bed and put the children inside it, covering them with all the clothes she could find. During the night, it got terribly cold. The woman kept as near as she could to the children and even tried to get into the case herself, but it was too small. Early ,next morning she heard planes passing overhead and wondered how she could send a signal. Then she had an idea. She stamped out the letters' SOS' in the snow. Fortunately, a pilot saw the signal and sent a message by radio to the nearest town. It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash. Lesson76 April Fools Day 愚人节 'To end our special news bulletin,' said the voice of the television announcer,' we are taking you to the macaroni fields of Calabria. Macaroni has been grown in this area for over six hundred years. Two of the leading growers, Giuseppe Moldova and Ricardo Brabante, tell me that they have been expecting a splendid crop this year and harvesting has begun earlier than usual. Here you can see two workers who, between them, have just finished cutting three cart-loads of golden brown macaroni stalks. The whole village has been woring day and night gathering and threshing this year's crop before the September rains. On the right, you can see Mrs Brabante herself. She has been helping her husband for thirty years now. Mrs Brabante is talking to the manager of the local factory where the crop is processed. This last scene shows you what will happen at the end of the harvest : the famous Calabrian macaroni-eating competition ! Signor Fratelli, the present champion, has won it every year since 1961. And that ends our special bulletin for today, Thursday, April 1st. We are now returning you to the studio.' Lesson77 A successful operation 一例成功的手术 The mummy of an Egyptian woman who died in 800 B.C. has just had an operation. The mummy is that of Shepenmut who was once a singer in the Temple of Thebes. As there were strange marks on the X-ray plates taken of the mummy, doctors have been trying to find out whether the woman died of a rare disease. The only way to do this was to operate. The operation, which lasted for over four hours, proved to be very difficult because of the hard resin which covered the skin. The doctors removed a section of the mummyand sent it to a laboratory. They also found something which the X-ray of the god Duamutef. This god which has the head of a cow was normally placed inside a mummy. The doctors have not yet decided how the woman died. They feared that the mummy would fall to pieces when they cut it open, but fortunately this has not happened. The mummy successfully survived the operation. Lesson78 The last one? 最后一枝吗？ After reading an article entitled 'Cigarette Smoking and Your Health' I lit a cigarette to calm my nerves. I smoked with concentration and pleasure as I was sure that this would be my last cigarette. For a whole week I did not smoe at all and during this time, my wife suffered terribly. I had all the usual symptoms of someone giving up smoing: a bad temper and an enormous appetite. My friends ept on offering me cigarettes and cigars. They made no effort to hide their amusement whenever I produced a packet of sweets from my pocket. After seven days of this I went to a party. Everybody around me was smoking and I felt extremely uncomfortable. When my old friend Brian urged me to accept a cigarette, it was more than I could bear. I too one guiltily, lit it and smoked with satisfaction. My wife was delighted that things had returned to normal once more. Anywayas Brian pointed out, it is the easiest thing in the world to give up smoking. He himself has done it lots of times! Lesson79 By air 乘飞机 I used to travel by air a great deal when I was a boy. M parents, used to live in South America and I used to fly there from Europe in the holidays. An airhostess would tae charge of me and I never had an unpleasant experience. I am used to travelling byair and only on one occasion have I ever felt frightened. After taking off, we were flying low over the city and slowlygaining height, when the plane suddenly turned round and flew back to the airport. While we were waiting to land, an air-hostess told us to eep calm and to get off the plane quietly as soon as it had touched down. Everybody on board was worried and we were curious to find out what had happened. Later we learnt that there was a very important person on board. The police had been told that a bomb had been planted on the plane. After we had landed, the plane was searched thoroughly. Fortunately, nothing was found and five hours later we were able to take off again. Lesson80 The Crystal Palace 水晶宫Perhaps the most extraordinary building of the nineteenth century was the Crystal Palace, which was built in Hyde Park for the Great Exhibition of 1851. The Crystal Palace was different from all other buildings in the world, for it was made of iron and glass. It was one of the biggest buildings of all time and a lot of people from man countries came to see it. A great many goods were sent to the exhibition from various parts of the world. There was also a great deal of machinery on display. The most wonderful piece of machinery on show was Nasmyth's steam hammer. Though in those days, travelling was not as easy as it is today, steam boats carried thousands of visitors across the Channel from Europe. On arriving in England, they were taken to the Crystal Palace b train. There were six million visitors in all, and the profits from the exhibition were used to build museums and colleges. Later, the Crystal Palace was moved to South London. It remained one of the most famous buildings in the world until it was burnt down in 1936. Lesson81 Escape 脱逃 When he had killed the guard, the prisoner of war quicly dragged him into the bushes. Woring rapidly in the darness, he soon changed into the dead man's clothes. Now, dressed in a blue uniform and with a rifle over his shoulder, the prisoner marched boldly up and down in front of the camp. He could hear shouting in the camp itself. Lights were blazing and men were

have shown interest in this new and unusual sport. But though air cyclists may learn how to fly over short distances, and may, eventually, even get across the English Channel, it is doubtful whether they will ever cycle across the Atlantic. Lesson67 Volcanoes 火山 Haroun Tazieff the Polish scientist, has spent his life-time studying active volcanoes and deep caves in all parts of the world. In 1948, he went to lae Kivu in the Congo to observe a new volcano which he later named Kituro. Tazieff was able to set up his camp very close to the volcano while it was erupting violently. Though he managed to take a number of brilliant photographs, he could not stay near the volcano for very long. He noticed that a river of liquid roc was coming towards him. It threatened to surround him completely, but Tazieff managed to escape just in time. He waited until the volcano became quiet and he was able to return two days later. This time, he managed to climb into the mouth of Kituro so that he could take photographsand measure temperatures. Tazieff has often risked his life in this way. He has been able to tell us more about active volcanoes than any man alive. Lesson68 Persistent 纠缠不休 I crossed the street to avoid meeting him, but he saw me and came running towards me. It was no use pretending that I had not seen him, so I waved to him. I never enjoy meeting Bert Dyes. He never has anything to do. No matter how busy you are, he always insists on coming with you. I had to thin of a way of preventing him from following me around all morning. 'Hullo, Bert,' I said. 'Fancy meeting you here !' 'Hullo, Elizabeth,' Bert answered. ' I was just wondering how to spend the morning--until I saw you. You're not busy doing anything, are you ?' ' No, not at all,' I answered.' I'm going to.. .' 'Would you mind my coming with you ?' he asked, before I had finished speaing. ‘ Not at all,' I lied, 'but I'm going to the dentist.' ' Then I'll come with you,' he answered.' There's always plenty to read in the 'waiting room !' lesson69 But not murder! 并非谋杀！ I was being tested for a driving licence for the third time. I had been asked to drive in heavy traffic and had done so successfully. After having been instructed to drive out of town, I began to acquire confidence. Sure that I had passed, I was almost beginning to enjoy my test. The examiner must have been pleased with my performance, for he smiled and said, 'Just one more thing, Mr Eames. Let us suppose that a child suddenly crosses the road in front of you. As soon as I tap on the window, I want the car to be stopped immediately.' I continued driving and after some time, the examiner tapped loudly. Though the sound could be heard clearly, it too me a long time to react. I suddenly pressed the brae pedal hard and we were both thrown forward. The examiner looed at me sadly. 'Mr Eames,' he said, in a mournful voice,' you have just killed that child !' lesson70 Red for danger 危险的红色During a bullfight, a drun suddenly wandered into the middle of the ring. The crowd began to shout, but the drunk was unaware of the danger. The bull was busy with the matador at the time, but it suddenly caught sight of the drun who was shouting rude remarks and waving a red cap. Apparently sensitive to criticism, the bull forgot all about the matador and charged at the drunk. The crowd suddenly grew quiet. The drun, however, seemed quite sure of himself. When the bull got close to him, he clumsily stepped aside to let it pass. The crowd broe into cheers and the drun bowed. By this time, however, three men had come into the ring and they quickly dragged the drun to safety. Even the bull seemed to feel sorry for him, for it looed on sympathetically until the drun was out of the way before once more turning its attention to the matador. Lesson71 A famous cloc一个著名的大钟 When ou visit London, one of the first things you will see is Big Ben, the famous clock which can be heard all over the world on the B.B.C. If the Houses of Parliament had hot been burned down in 1834, the great cloc would never have beenerected. Big Ben taes its name from Sir Benjamin Hall who was responsible for the making of the cloc when the new Houses of Parliament were being built. It is not only of immense size, but is extremelyaccurate as well. Officials from Greenwich Observator have the clock checked twice a day. On the B.B.C. you can hear the clock when it is actually striking because microphones are connected to the cloc tower. Big Ben has rarely gone wrong. Once, however, it failed to give the correct time. A painter who had been working on the tower hung a pot of paint on one of the hands and slowed it down ! Lesson72 A car called Bluebird “蓝鸟”汽车 The great racing driver, Sir Malcolm Campbell, was the first man to drive at over 300 miles per hour. He set up a new world record in September 1935 at Bonneville Salt Flats, Utah. Bluebird, the car he was driving, had been specially built for him. It was over 30 feet in length and had a 2500 horse-power engine. Although Campbell reached a speed of over 304 miles per hour, he had great difficulty in controlling the car because a tyre burst during the first run. After his attempt, Campbell was disappointed to learn that his average speed had been 299 miles per hour. However, a few days later, he was told that a mistae had been made. His average speed had been 301 miles per hour. Since that time, racing drivers have reached speeds of over 400 miles an hour. Following his father's footsteps many years later, Sir Malcolm's son, Donald, also set up a world record. Like his father, he was driving a car called Bluebird. Lesson73 The record-holder 纪录保持者 Little boys who play truant from school are unimaginative. A quiet day's fishing, or eight hours in a cinema seeing the same film over and over again, is usually as far as they get. They have all been put to shame by a boy who, while playing truant, travelled 1600 miles. He hitch- hiked to Dover and, towards evening, went into a boat to find somewhere to sleep. When he woe up next morning, he discovered that the boat had, in themeantime, travelled to Calais. No one noticed the boy as he crept off. From there, he hitch-hiked to Paris in a lorry. The driver gave him a few biscuits and a cup of coffee and left him just outside the city. The next car the boy stopped did not tae him into the centre of Paris as he hoped it would, but to Perpignan on the French-Spanish border. There he was ped up by a policeman and sent bacto England by the local authorities. He has surely set up a record for the thousands of boys who dream of evading school. Lesson74 Out of the limelight 舞台之外 An ancient bus stopped by a dry river bed and a party of famous actors and actresses got off. Dressed in dark glasses and old clothes, they had taen special precautions so that no one should recognize them. But as they soon discovered, disguises can sometimes be too perfect. 'This is a wonderful place for a picnic,' said Gloria Gleam. ' It couldn't be better, Gloria,' Brinsley Meers agreed. 'No newspaper men, no film fans! Why don't we come more often ?' Meanwhile, two other actors, Rocwall Slinger and Merlin Greeves, had carried two large food baskets to a shady spot under some trees. When they had all made themselves comfortable, a stranger appeared. He looked very angry. 'Now you gut out of here, all of you!' he shouted: ' I'm sheriff here. Do you see that notice ? It sas\\ou can't read !' ' Look, sheriff, 'said Rocwall,' don't be too hard on us. I'm Rockwall Slinger and this is Merlin Greeves.' ' Oh, is it ?' said the sheriff with a sneer. 'Well, I'm Brinsley Meers, and my other name is Gloria Gleam. Now you get out of here fast !' lesson75 SOS 呼救信号 When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was illed. The only passengers, a young woman and her two baby daughters, were unhurt. It was the middle of winter. Snow lay thic on the ground. The woman knew that the nearest village was miles away. When it grew dark she turned a suitcase into a bed and put the children inside it, covering them with all the clothes she could find. During the night, it got terribly cold. The woman ept as near as she could to the children and even tried to get into the case herself, but it was too small. Early ,next morning she heard planes passing overhead and wondered how she could send a signal. Then she had an idea. She stamped out the letters' SOS' in the snow. Fortunately, a pilot saw the signal and sent a message by radio to the nearest town. It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash. Lesson76 April Fools Day 愚人节'To end our special news bulletin,' said the voice of the television announcer,' we are taking you to the macaroni fields of Calabria. Macaroni has been grown in this area for over six hundred years. Two of the leading growers, Giuseppe Moldova and Ricardo Brabante, tell me that they have been expecting a splendid crop this year and harvesting has begun earlier than usual. Here you can see two workers who, between them, have just finished cutting three cart-loads of golden brown macaroni stalks. The whole village has been working day and night gathering and threshing this year's crop before the September rains. On the right, you can see Mrs Brabante herself. She has been helping her husband for thirty years now. Mrs Brabante is talking to the manager of the local factory where the crop is processed. This last scene shows you what will happen at the end of the harvest : the famous Calabrian macaroni-eating competition ! Signor Fratelli, the present champion, has won it every year since 1961. And that ends our special bulletin for today, Thursday, April 1st. We are now returning you to the studio.' Lesson77 A successful operation 一例成功的手术 The mummy of an Egyptian woman who died in 800 B.C. has just had an operation. The mummy is that of Shepenmut who was once a singer in the Temple of Thebes. As there were strange marks on the X-ray plates taken of the mummy, doctors have been trying to find out whether the woman died of a rare disease. The only way to do this was to operate. The operation, which lasted for over four hours, proved to be very difficult because of the hard resin which covered the skin. The doctors removed a section of the mummy and sent it to a laboratory. They also found something which the X-ray of the god Duamutef. This god which has the head of a cow was normally placed inside a mummy. The doctors have not yet decided how the woman died. They feared that the mummy would fall to pieces when they cut it open, but fortunately this has not happened. The mummy successfully survived the operation. Lesson78 The last one?最后一枝吗？ After reading an article entitled 'Cigarette Smoing and Your Health' I lit a cigarette to calm my nerves. I smoked with concentration and pleasure as I was sure that this would be my last cigarette. For a whole week did not smoe at all and during this time, my wife suffered terribly. I had all the usual symptoms of someone giving up smong: a bad temper and an enormous appetite. My friends ept on offering me cigarettes and cigars. They made no effort to hide their amusement whenever I produced a packet of sweets from my pocket. After seven days of this I went to a party. Everybody around me was smoking and I felt extremely uncomfortable. When my old friend Brian urged me to accept a cigarette, it was more than I could bear. I too one guiltily, lit it and smoed with satisfaction. My wife was delighted that things had returned to normal once more. Anyway, as Brian pointed out, it is the easiest thing in the world to give up smoing. He himself has done it lots of times! Lesson79 By air 乘飞机 I used to travel by air a great deal when I was a boy. M parents, used to live in South America and I used to fly there from Europe in the holidays. An airhostess would tae charge of me and I never had an unpleasant experience. I am used to travelling air and only on one occasion have I ever felt frightened. After taking off, we were flying low over the city and slowlygaining height, when the plane suddenly turned round and flew bac to the airport. While we were waiting to land, an air-hostess told us to eep calm and to get off the plane quietly as soon as it had touched down. Everybody on board was worried and we were curious to find out what had happened. Later we learnt that there was a very important person on board. The police had been told that a bomb had been planted on the plane. After we had landed, the plane was searched thoroughly. Fortunately, nothing was found and five hours later we were able to tae off again. Lesson80 The Crystal Palace 水晶宫 Perhaps the most extraordinary building of the nineteenth century was the Crystal Palace, which was built in Hyde Park for the Great Exhibition of 1851. The Crystal Palace was different from all other buildings in the world, for it was made of iron and glass. It was one of the biggest buildings of all time and a lot of people from many countries came to see it. A great many goods were sent to the exhibition from various parts of the world. There was also a great deal of machinery on display. The most wonderful piece of machinery on show was Nasmyth's steam hammer. Though in those days, travelling was not as easy as it is today, steam boats carried thousands of visitors across the Channel from Europe. On arriving in England, they were taken to the Crystal Palace b train. There were six million visitors in all, and the profits from the exhibition were used to build museums and colleges. Later, the Crystal Palace was moved to South London. It remained one of the most famous buildings in the world until it was burnt down in 1936. Lesson81 Escape 脱逃 When he had killed the guard, the prisoner of war quicly dragged him into the bushes. Woring rapidly in the darness, he soon changed into the dead man's clothes. Now, dressed in a blue uniform and with a rifle over his shoulder, the prisoner marched boldly up and down in front of the camp. He could hear shouting in the camp itself. Lights were blazing and men were 说明：人口自然增长率为12‰。 4.1.2工程期限

根据总体规划，近期为2008年，中期为2015年，远期为2025年。在实施过程中，应结合双堡镇的实际情况进行适当的调整。 4.1.3供水规模

双堡集镇2005年人口为1.1万人，根据城镇总体规划及加快城镇化进程纲要，2008年人口为1.2万人，2015年为1.5万人，2025年2万人。

用水量的计算依据《城市给水工程规划规范》和《乡镇给排水》，并结合双堡实际情况加以综合平衡。采用的基本数据及指标见表4-1，用水量计算见表4-2，4-3，4-4，4-5。 表4-1基本数据及指标

序号 1 2 3 4 5 6 7 8 名 称 人口（万人） 供水普及率（%） 生活用水量标准（L/人·天） 工业用水量:生活用水量 公建及其它用水（%） 未预见及管网损漏水（%） 单位人口综合用水指标（万m/万人·天） 单位面积综合用水指标（万m/km·天） 3232008年 1.2 98% 120 20:80 10 10 0.2 0.2 2015年 1.5 100 180 40:60 10 10 0.25 0.22 表4-2 比例相关法用水量计算表

项 目 人口（万人） 最大日生活用水标准（L/人·天） 生活用水量（万m/天） 生活用水量占总用水量比例（%） 工业用水量（万m/天） 小计 公建、商业等用水量（万m/天） 未预见、漏失水量（万m/天） 供水总量（万m/天） 333332008年 1.2 120 0.14 80 0.035 0.18 0.018 0.018 0.216 2015年 1.5 180 0.27 60 0.09 0.36 0.036 0.036 0.432 表4-3人口指标用水量计算表

have shown interest in this new and unusual sport. But though air cyclists may learn how to fly over short distances, and may, eventually, even get across the English Channel, it is doubtful whether they will ever cycle across the Atlantic. Lesson67 Volcanoes 火山 Haroun Tazieff the Polish scientist, has spent his life-time studying active volcanoes and deep caves in all parts of the world. In 1948, he went to lae Kivu in the Congo to observe a new volcano which he later named Kituro. Tazieff was able to set up his camp very close to the volcano while it was erupting violently. Though he managed to tae a number of brilliant photographs, he could not stay near the volcano for very long. He noticed that a river of liquid roc was coming towards him. It threatened to surround him completely, but Tazieff managed to escape just in time. He waited until the volcano became quiet and he was able to return two days later. This time, he managed to climb into the mouth of Kituro so that he could tae photographs and measure temperatures. Tazieff has often risked his life in this way. He has been able to tell us more about active volcanoes than any man alive. Lesson68 Persistent 纠缠不休 I crossed the street to avoid meeting him, but he saw me and came running towards me. It was no use pretending that I had not seen him, so I waved to him. I never enjoymeeting Bert Dyes. He never has anything to do. No matter how busy you are, he always insists on coming with you. I had to thinof a way of preventing him from following me around all morning. 'Hullo, Bert,' I said. 'Fancy meeting you here !' 'Hullo, Elizabeth,' Bert answered. ' I was just wondering how to spend the morning--until I saw you. You're not busy doing anything, are you ?' ' No, not at all,' I answered.' I'm going to.. .' 'Would you mind my coming with you ?' he asked, before I had finished speaking. ‘ Not at all,' I lied, 'but I'm going to the dentist.' ' Then I'll come with you,' he answered.' There's always plenty to read in the 'waiting room !' lesson69 But not murder! 并非谋杀！ I was being tested for a driving licence for the third time. I had been asked to drive in heavy traffic and had done so successfully. After having been instructed to drive out of town, I began to acquire confidence. Sure that I had passed, I was almost beginning to enjoy my test. The examiner must have been pleased with my performance, for he smiled and said, 'Just one more thing, Mr Eames. Let us suppose that a child suddenly crosses the road in front of you. As soon as I tap on the window, I want the car to be stopped immediately.' I continued driving and after some time, the examiner tapped loudly. Though the sound could be heard clearly, it too me a long time to react. I suddenly pressed the brae pedal hard and we were both thrown forward. The examiner looed at me sadly. 'Mr Eames,' he said, in a mournful voice,' you have just killed that child !' lesson70 Red for danger 危险的红色 During a bullfight, a drunsuddenly wandered into the middle of the ring. The crowd began to shout, but the drunk was unaware of the danger. The bull was busy with the matador at the time, but it suddenly caught sight of the drun who was shouting rude remarks and waving a red cap. Apparently sensitive to criticism, the bull forgot all about the matador and charged at the drun. The crowd suddenly grew quiet. The drunhowever, seemed quite sure of himself. When the bull got close to him, he clumsily stepped aside to let it pass. The crowd broe into cheers and the drun bowed. By this time, however, three men had come into the ring and they quicly dragged the drun to safety. Even the bull seemed to feel sorry for him, for it looed on sympathetically until the drun was out of the way before once more turning its attention to the matador. Lesson71 A famous clock 一个著名的大钟 When you visit London, one of the first things you will see is Big Ben, the famous cloc which can be heard all over the world on the B.B.C. If the Houses of Parliament had hot been burned down in 1834, the great clock would never have been erected. Big Ben taes its name from Sir Benjamin Hall who was responsible for the making of the cloc when the new Houses of Parliament were being built. It is not only of immense size, but is extremely accurate as well. Officials from Greenwich Observatory have the clock checked twice a day. On the B.B.C. you can hear the clock when it is actually striking because microphones are connected to the clock tower. Big Ben has rarely gone wrong. Once, however, it failed to give the correct time. A painter who had been woring on the tower hung a pot of paint on one of the hands and slowed it down ! Lesson72 A car called Bluebird “蓝鸟”汽车 The great racing driver, Sir Malcolm Campbell, was the first man to drive at over 300 miles per hour. He set up a new world record in September 1935 at Bonneville Salt Flats, Utah. Bluebird, the car he was driving, had been specially built for him. It was over 30 feet in length and had a 2500 horse-power engine. Although Campbell reached a speed of over 304 miles per hour, he had great difficulty in controlling the car because a tyre burst during the first run. After his attempt, Campbell was disappointed to learn that his average speed had been 299 miles per hour. However, a few days later, he was told that a mistake had been made. His average speed had been 301 miles per hour. Since that time, racing drivers have reached speeds of over 400 miles an hour. Following is father's footsteps many years later, Sir Malcolm's son, Donald, also set up a world record. Like his father, he was driving a car called Bluebird. Lesson73 The record-holder 纪录保持者 Little boys who play truant from school are unimaginative. A quiet day's fishing, or eight hours in a cinema seeing the same film over and over again, is usually as far as they get. They have all been put to shame by a boy who, while playing truant, travelled 1600 miles. He hitch- hiked to Dover and, towards evening, went into a boat to find somewhere to sleep. When he woe up next morning, he discovered that the boat had, in the meantime, travelled to Calais. No one noticed the boy as he crept off. From there, he hitch-hiked to Paris in a lorry. The driver gave him a few biscuits and a cup of coffee and left him just outside the city. The next car the boy stopped did not tae him into the centre of Paris as he hoped it would, but to Perpignan on the French-Spanish border. There he was piced up by a policeman and sent backto England by the local authorities. He has surely set up a record for the thousands of boys who dream of evading school. Lesson74 Out of the limelight 舞台之外 An ancient bus stopped by a dry river bed and a party of famous actors and actresses got off. Dressed in dar glasses and old clothes, they had taken special precautions so that no one should recognize them. But as they soon discovered, disguises can sometimes be too perfect. 'This is a wonderful place for a picnic,' said Gloria Gleam. ' It couldn't be better, Gloria,' Brinsley Meers agreed. 'No newspaper men, no film fans! Wh don't we come more often ?' Meanwhile, two other actors, Rocwall Slinger and Merlin Greeves, had carried two large food baskets to a shady spot under some trees. When they had all made themselves comfortable, a stranger appeared. He looked very angry. 'Now ou gut out of here, all of you!' he shouted: ' I'm sheriff here. Do you see that notice ? It says\in case you can't read !' ' Look, sheriff, 'said Rocwall,' don't be too hard on us. I'm Rocwall Slinger and this is Merlin Greeves.' ' Oh, is it ?' said the sheriff with a sneer. 'Well, I'm Brinksley Meers, and my other name is Gloria Gleam. Now you get out of here fast !' lesson75 SOS 呼救信号 When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed. The only passengers, a young woman and her two baby daughters, were unhurt. It was the middle of winter. Snow lay thic on the ground. The woman knew that the nearest village was miles away. When it grew dark. she turned a suitcase into a bed and put the children inside it, covering them with all the clothes she could find. During the night, it got terribly cold. The woman kept as near as she could to the children and even tried to get into the case herself, but it was too small. Early ,next morning she heard planes passing overhead and wondered how she could send a signal. Then she had an idea. She stamped out the letters' SOS' in the snow. Fortunately, a pilot saw the signal and sent a message by radio to the nearest town. It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash. Lesson76 April Fools Day 愚人节 'To end our special news bulletin,' said the voice of the television announcer,' we are taking you to the macaroni fields of Calabria. Macaroni has been grown in this area for over six hundred years. Two of the leading growers, Giuseppe Moldova and Ricardo Brabante, tell me that they have been expecting a splendid crop this year and harvesting has begun earlier than usual. Here you can see two workers who, between them, have just finished cutting three cart-loads of golden brown macaroni stalks. The whole village has been woring day and night gathering and threshing this year's crop before the September rains. On the right, you can see Mrs Brabante herself. She has been helping her husband for thirty years now. Mrs Brabante is talking to the manager of the local factory where the crop is processed. This last scene shows you what will happen at the end of the harvest : the famous Calabrian macaroni-eating competition ! Signor Fratelli, the present champion, has won it every year since 1961. And that ends our special bulletin for today, Thursday, April 1st. We are now returning you to the studio.' Lesson77 A successful operation 一例成功的手术 The mummy of an Egyptian woman who died in 800 B.C. has just had an operation. The mummy is that of Shepenmut who was once a singer in the Temple of Thebes. As there were strange marks on the X-ray plates taken of the mummy, doctors have been trying to find out whether the woman died of a rare disease. The only way to do this was to operate. The operation, which lasted for over four hours, proved to be very difficult because of the hard resin which covered the skin. The doctors removed a section of the mummyand sent it to a laboratory. They also found something which the X-ray of the god Duamutef. This god which has the head of a cow was normally placed inside a mummy. The doctors have not yet decided how the woman died. They feared that the mummy would fall to pieces when they cut it open, but fortunately this has not happened. The mummy successfully survived the operation. Lesson78 The last one? 最后一枝吗？ After reading an article entitled 'Cigarette Smoking and Your Health' I lit a cigarette to calm my nerves. I smoked with concentration and pleasure as I was sure that this would be my last cigarette. For a whole week I did not smoe at all and during this time, my wife suffered terribly. I had all the usual symptoms of someone giving up smoing: a bad temper and an enormous appetite. My friends ept on offering me cigarettes and cigars. They made no effort to hide their amusement whenever I produced a packet of sweets from my pocket. After seven days of this I went to a party. Everybody around me was smoking and I felt extremely uncomfortable. When my old friend Brian urged me to accept a cigarette, it was more than I could bear. I too one guiltily, lit it and smoked with satisfaction. My wife was delighted that things had returned to normal once more. Anywayas Brian pointed out, it is the easiest thing in the world to give up smoking. He himself has done it lots of times! Lesson79 By air 乘飞机 I used to travel by air a great deal when I was a boy. M parents, used to live in South America and I used to fly there from Europe in the holidays. An airhostess would tae charge of me and I never had an unpleasant experience. I am used to travelling byair and only on one occasion have I ever felt frightened. After taking off, we were flying low over the city and slowlygaining height, when the plane suddenly turned round and flew back to the airport. While we were waiting to land, an air-hostess told us to eep calm and to get off the plane quietly as soon as it had touched down. Everybody on board was worried and we were curious to find out what had happened. Later we learnt that there was a very important person on board. The police had been told that a bomb had been planted on the plane. After we had landed, the plane was searched thoroughly. Fortunately, nothing was found and five hours later we were able to take off again. Lesson80 The Crystal Palace 水晶宫Perhaps the most extraordinary building of the nineteenth century was the Crystal Palace, which was built in Hyde Park for the Great Exhibition of 1851. The Crystal Palace was different from all other buildings in the world, for it was made of iron and glass. It was one of the biggest buildings of all time and a lot of people from man countries came to see it. A great many goods were sent to the exhibition from various parts of the world. There was also a great deal of machinery on display. The most wonderful piece of machinery on show was Nasmyth's steam hammer. Though in those days, travelling was not as easy as it is today, steam boats carried thousands of visitors across the Channel from Europe. On arriving in England, they were taken to the Crystal Palace b train. There were six million visitors in all, and the profits from the exhibition were used to build museums and colleges. Later, the Crystal Palace was moved to South London. It remained one of the most famous buildings in the world until it was burnt down in 1936. Lesson81 Escape 脱逃 When he had killed the guard, the prisoner of war quicly dragged him into the bushes. Woring rapidly in the darness, he soon changed into the dead man's clothes. Now, dressed in a blue uniform and with a rifle over his shoulder, the prisoner marched boldly up and down in front of the camp. He could hear shouting in the camp itself. Lights were blazing and men were

have shown interest in this new and unusual sport. But though air cyclists may learn how to fly over short distances, and may, eventually, even get across the English Channel, it is doubtful whether they will ever cycle across the Atlantic. Lesson67 Volcanoes 火山 Haroun Tazieff the Polish scientist, has spent his life-time studying active volcanoes and deep caves in all parts of the world. In 1948, he went to lae Kivu in the Congo to observe a new volcano which he later named Kituro. Tazieff was able to set up his camp very close to the volcano while it was erupting violently. Though he managed to take a number of brilliant photographs, he could not stay near the volcano for very long. He noticed that a river of liquid roc was coming towards him. It threatened to surround him completely, but Tazieff managed to escape just in time. He waited until the volcano became quiet and he was able to return two days later. This time, he managed to climb into the mouth of Kituro so that he could take photographsand measure temperatures. Tazieff has often risked his life in this way. He has been able to tell us more about active volcanoes than any man alive. Lesson68 Persistent 纠缠不休 I crossed the street to avoid meeting him, but he saw me and came running towards me. It was no use pretending that I had not seen him, so I waved to him. I never enjoy meeting Bert Dyes. He never has anything to do. No matter how busy you are, he always insists on coming with you. I had to thin of a way of preventing him from following me around all morning. 'Hullo, Bert,' I said. 'Fancy meeting you here !' 'Hullo, Elizabeth,' Bert answered. ' I was just wondering how to spend the morning--until I saw you. You're not busy doing anything, are you ?' ' No, not at all,' I answered.' I'm going to.. .' 'Would you mind my coming with you ?' he asked, before I had finished speaing. ‘ Not at all,' I lied, 'but I'm going to the dentist.' ' Then I'll come with you,' he answered.' There's always plenty to read in the 'waiting room !' lesson69 But not murder! 并非谋杀！ I was being tested for a driving licence for the third time. I had been asked to drive in heavy traffic and had done so successfully. After having been instructed to drive out of town, I began to acquire confidence. Sure that I had passed, I was almost beginning to enjoy my test. The examiner must have been pleased with my performance, for he smiled and said, 'Just one more thing, Mr Eames. Let us suppose that a child suddenly crosses the road in front of you. As soon as I tap on the window, I want the car to be stopped immediately.' I continued driving and after some time, the examiner tapped loudly. Though the sound could be heard clearly, it too me a long time to react. I suddenly pressed the brae pedal hard and we were both thrown forward. The examiner looed at me sadly. 'Mr Eames,' he said, in a mournful voice,' you have just killed that child !' lesson70 Red for danger 危险的红色During a bullfight, a drun suddenly wandered into the middle of the ring. The crowd began to shout, but the drunk was unaware of the danger. The bull was busy with the matador at the time, but it suddenly caught sight of the drun who was shouting rude remarks and waving a red cap. Apparently sensitive to criticism, the bull forgot all about the matador and charged at the drunk. The crowd suddenly grew quiet. The drun, however, seemed quite sure of himself. When the bull got close to him, he clumsily stepped aside to let it pass. The crowd broe into cheers and the drun bowed. By this time, however, three men had come into the ring and they quickly dragged the drun to safety. Even the bull seemed to feel sorry for him, for it looed on sympathetically until the drun was out of the way before once more turning its attention to the matador. Lesson71 A famous cloc一个著名的大钟 When ou visit London, one of the first things you will see is Big Ben, the famous clock which can be heard all over the world on the B.B.C. If the Houses of Parliament had hot been burned down in 1834, the great cloc would never have beenerected. Big Ben taes its name from Sir Benjamin Hall who was responsible for the making of the cloc when the new Houses of Parliament were being built. It is not only of immense size, but is extremelyaccurate as well. Officials from Greenwich Observator have the clock checked twice a day. On the B.B.C. you can hear the clock when it is actually striking because microphones are connected to the cloc tower. Big Ben has rarely gone wrong. Once, however, it failed to give the correct time. A painter who had been working on the tower hung a pot of paint on one of the hands and slowed it down ! Lesson72 A car called Bluebird “蓝鸟”汽车 The great racing driver, Sir Malcolm Campbell, was the first man to drive at over 300 miles per hour. He set up a new world record in September 1935 at Bonneville Salt Flats, Utah. Bluebird, the car he was driving, had been specially built for him. It was over 30 feet in length and had a 2500 horse-power engine. Although Campbell reached a speed of over 304 miles per hour, he had great difficulty in controlling the car because a tyre burst during the first run. After his attempt, Campbell was disappointed to learn that his average speed had been 299 miles per hour. However, a few days later, he was told that a mistae had been made. His average speed had been 301 miles per hour. Since that time, racing drivers have reached speeds of over 400 miles an hour. Following his father's footsteps many years later, Sir Malcolm's son, Donald, also set up a world record. Like his father, he was driving a car called Bluebird. Lesson73 The record-holder 纪录保持者 Little boys who play truant from school are unimaginative. A quiet day's fishing, or eight hours in a cinema seeing the same film over and over again, is usually as far as they get. They have all been put to shame by a boy who, while playing truant, travelled 1600 miles. He hitch- hiked to Dover and, towards evening, went into a boat to find somewhere to sleep. When he woe up next morning, he discovered that the boat had, in themeantime, travelled to Calais. No one noticed the boy as he crept off. From there, he hitch-hiked to Paris in a lorry. The driver gave him a few biscuits and a cup of coffee and left him just outside the city. The next car the boy stopped did not tae him into the centre of Paris as he hoped it would, but to Perpignan on the French-Spanish border. There he was ped up by a policeman and sent bacto England by the local authorities. He has surely set up a record for the thousands of boys who dream of evading school. Lesson74 Out of the limelight 舞台之外 An ancient bus stopped by a dry river bed and a party of famous actors and actresses got off. Dressed in dark glasses and old clothes, they had taen special precautions so that no one should recognize them. But as they soon discovered, disguises can sometimes be too perfect. 'This is a wonderful place for a picnic,' said Gloria Gleam. ' It couldn't be better, Gloria,' Brinsley Meers agreed. 'No newspaper men, no film fans! Why don't we come more often ?' Meanwhile, two other actors, Rocwall Slinger and Merlin Greeves, had carried two large food baskets to a shady spot under some trees. When they had all made themselves comfortable, a stranger appeared. He looked very angry. 'Now you gut out of here, all of you!' he shouted: ' I'm sheriff here. Do you see that notice ? It sas\\ou can't read !' ' Look, sheriff, 'said Rocwall,' don't be too hard on us. I'm Rockwall Slinger and this is Merlin Greeves.' ' Oh, is it ?' said the sheriff with a sneer. 'Well, I'm Brinsley Meers, and my other name is Gloria Gleam. Now you get out of here fast !' lesson75 SOS 呼救信号 When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was illed. The only passengers, a young woman and her two baby daughters, were unhurt. It was the middle of winter. Snow lay thic on the ground. The woman knew that the nearest village was miles away. When it grew dark she turned a suitcase into a bed and put the children inside it, covering them with all the clothes she could find. During the night, it got terribly cold. The woman ept as near as she could to the children and even tried to get into the case herself, but it was too small. Early ,next morning she heard planes passing overhead and wondered how she could send a signal. Then she had an idea. She stamped out the letters' SOS' in the snow. Fortunately, a pilot saw the signal and sent a message by radio to the nearest town. It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash. Lesson76 April Fools Day 愚人节'To end our special news bulletin,' said the voice of the television announcer,' we are taking you to the macaroni fields of Calabria. Macaroni has been grown in this area for over six hundred years. Two of the leading growers, Giuseppe Moldova and Ricardo Brabante, tell me that they have been expecting a splendid crop this year and harvesting has begun earlier than usual. Here you can see two workers who, between them, have just finished cutting three cart-loads of golden brown macaroni stalks. The whole village has been working day and night gathering and threshing this year's crop before the September rains. On the right, you can see Mrs Brabante herself. She has been helping her husband for thirty years now. Mrs Brabante is talking to the manager of the local factory where the crop is processed. This last scene shows you what will happen at the end of the harvest : the famous Calabrian macaroni-eating competition ! Signor Fratelli, the present champion, has won it every year since 1961. And that ends our special bulletin for today, Thursday, April 1st. We are now returning you to the studio.' Lesson77 A successful operation 一例成功的手术 The mummy of an Egyptian woman who died in 800 B.C. has just had an operation. The mummy is that of Shepenmut who was once a singer in the Temple of Thebes. As there were strange marks on the X-ray plates taken of the mummy, doctors have been trying to find out whether the woman died of a rare disease. The only way to do this was to operate. The operation, which lasted for over four hours, proved to be very difficult because of the hard resin which covered the skin. The doctors removed a section of the mummy and sent it to a laboratory. They also found something which the X-ray of the god Duamutef. This god which has the head of a cow was normally placed inside a mummy. The doctors have not yet decided how the woman died. They feared that the mummy would fall to pieces when they cut it open, but fortunately this has not happened. The mummy successfully survived the operation. Lesson78 The last one?最后一枝吗？ After reading an article entitled 'Cigarette Smoing and Your Health' I lit a cigarette to calm my nerves. I smoked with concentration and pleasure as I was sure that this would be my last cigarette. For a whole week did not smoe at all and during this time, my wife suffered terribly. I had all the usual symptoms of someone giving up smong: a bad temper and an enormous appetite. My friends ept on offering me cigarettes and cigars. They made no effort to hide their amusement whenever I produced a packet of sweets from my pocket. After seven days of this I went to a party. Everybody around me was smoking and I felt extremely uncomfortable. When my old friend Brian urged me to accept a cigarette, it was more than I could bear. I too one guiltily, lit it and smoed with satisfaction. My wife was delighted that things had returned to normal once more. Anyway, as Brian pointed out, it is the easiest thing in the world to give up smoing. He himself has done it lots of times! Lesson79 By air 乘飞机 I used to travel by air a great deal when I was a boy. M parents, used to live in South America and I used to fly there from Europe in the holidays. An airhostess would tae charge of me and I never had an unpleasant experience. I am used to travelling air and only on one occasion have I ever felt frightened. After taking off, we were flying low over the city and slowlygaining height, when the plane suddenly turned round and flew bac to the airport. While we were waiting to land, an air-hostess told us to eep calm and to get off the plane quietly as soon as it had touched down. Everybody on board was worried and we were curious to find out what had happened. Later we learnt that there was a very important person on board. The police had been told that a bomb had been planted on the plane. After we had landed, the plane was searched thoroughly. Fortunately, nothing was found and five hours later we were able to tae off again. Lesson80 The Crystal Palace 水晶宫 Perhaps the most extraordinary building of the nineteenth century was the Crystal Palace, which was built in Hyde Park for the Great Exhibition of 1851. The Crystal Palace was different from all other buildings in the world, for it was made of iron and glass. It was one of the biggest buildings of all time and a lot of people from many countries came to see it. A great many goods were sent to the exhibition from various parts of the world. There was also a great deal of machinery on display. The most wonderful piece of machinery on show was Nasmyth's steam hammer. Though in those days, travelling was not as easy as it is today, steam boats carried thousands of visitors across the Channel from Europe. On arriving in England, they were taken to the Crystal Palace b train. There were six million visitors in all, and the profits from the exhibition were used to build museums and colleges. Later, the Crystal Palace was moved to South London. It remained one of the most famous buildings in the world until it was burnt down in 1936. Lesson81 Escape 脱逃 When he had killed the guard, the prisoner of war quicly dragged him into the bushes. Woring rapidly in the darness, he soon changed into the dead man's clothes. Now, dressed in a blue uniform and with a rifle over his shoulder, the prisoner marched boldly up and down in front of the camp. He could hear shouting in the camp itself. Lights were blazing and men were 项 目 人口（万人） 单位人口综合用水指标（万m/万人·天） 供水量（万m/天） 332008年 1.2 0.2 0.24 2015年 1.5 0.25 0.375 表4-4面积指标法用水量计算表

项 目 面积（km） 单位面积综合用水指标（万m/km·天） 供水量（万m/天） 33222008年 1.2 0.2 0.24 2015年 1.5 0.22 0.33 表4-5用水量预测汇总表

项 目 比例相关法（万m/天） 人口指标法（万m/天） 面积指标法（万m/天） 平均（万m/天） 33332008年 0.216 0.24 0.24 0.232 2015年 0.432 0.375 0.33 0.379 根据以上几种方法的计算，推荐双堡镇2008年供水规模为0.25万m3/天，2015年供水规模0.4万m3/天，预测2025年供水规模1万m3/天。

双堡镇的供水规模略大于需水量，这对地方经济的发展，提高人民生活水平，改善投资环境，乡镇供水的适当超前是十分必要的。 4.2 乡镇水源 4.2.1地下水

西秀区双堡镇地貌系丘陵盆地，地下水以天然降雨为补给来源。西秀区地下水资源总量2.5亿m3，其中双堡镇地下水资源总量0.09亿m3，以岩溶地下水居首，约占地下天然资源的82.5%；其次为基岩裂隙水，占14.5%；松散岩类孔隙水仅占3%左右。地下水化学类型主要为重碳酸钙型，少部分夹白云岩地段为重碳酸钙镁型。PH值7-7.8，总硬度8-10度，矿化度为160-300mg/L。 双堡镇地下水作为村寨的生活用水和部分小企业的辅助用水是可能的，但作为乡镇驻地供水和大型乡镇企业的水源，实属不可能。 4.2.2水库水

革寨水库位于双堡镇东面，距镇驻地有5km，拦截格凸河支流大屯河上源建库，属珠江流域红水河水系，集雨面积58.1km2，水库按50年一遇标准设计，总库容605万m3，相应校核洪水位1263.67m；正常蓄水位以下库容281万m3，相

have shown interest in this new and unusual sport. But though air cyclists may learn how to fly over short distances, and may, eventually, even get across the English Channel, it is doubtful whether they will ever cycle across the Atlantic. Lesson67 Volcanoes 火山 Haroun Tazieff the Polish scientist, has spent his life-time studying active volcanoes and deep caves in all parts of the world. In 1948, he went to lae Kivu in the Congo to observe a new volcano which he later named Kituro. Tazieff was able to set up his camp very close to the volcano while it was erupting violently. Though he managed to tae a number of brilliant photographs, he could not stay near the volcano for very long. He noticed that a river of liquid roc was coming towards him. It threatened to surround him completely, but Tazieff managed to escape just in time. He waited until the volcano became quiet and he was able to return two days later. This time, he managed to climb into the mouth of Kituro so that he could tae photographs and measure temperatures. Tazieff has often risked his life in this way. He has been able to tell us more about active volcanoes than any man alive. Lesson68 Persistent 纠缠不休 I crossed the street to avoid meeting him, but he saw me and came running towards me. It was no use pretending that I had not seen him, so I waved to him. I never enjoymeeting Bert Dyes. He never has anything to do. No matter how busy you are, he always insists on coming with you. I had to thinof a way of preventing him from following me around all morning. 'Hullo, Bert,' I said. 'Fancy meeting you here !' 'Hullo, Elizabeth,' Bert answered. ' I was just wondering how to spend the morning--until I saw you. You're not busy doing anything, are you ?' ' No, not at all,' I answered.' I'm going to.. .' 'Would you mind my coming with you ?' he asked, before I had finished speaking. ‘ Not at all,' I lied, 'but I'm going to the dentist.' ' Then I'll come with you,' he answered.' There's always plenty to read in the 'waiting room !' lesson69 But not murder! 并非谋杀！ I was being tested for a driving licence for the third time. I had been asked to drive in heavy traffic and had done so successfully. After having been instructed to drive out of town, I began to acquire confidence. Sure that I had passed, I was almost beginning to enjoy my test. The examiner must have been pleased with my performance, for he smiled and said, 'Just one more thing, Mr Eames. Let us suppose that a child suddenly crosses the road in front of you. As soon as I tap on the window, I want the car to be stopped immediately.' I continued driving and after some time, the examiner tapped loudly. Though the sound could be heard clearly, it too me a long time to react. I suddenly pressed the brae pedal hard and we were both thrown forward. The examiner looed at me sadly. 'Mr Eames,' he said, in a mournful voice,' you have just killed that child !' lesson70 Red for danger 危险的红色 During a bullfight, a drunsuddenly wandered into the middle of the ring. The crowd began to shout, but the drunk was unaware of the danger. The bull was busy with the matador at the time, but it suddenly caught sight of the drun who was shouting rude remarks and waving a red cap. Apparently sensitive to criticism, the bull forgot all about the matador and charged at the drun. The crowd suddenly grew quiet. The drunhowever, seemed quite sure of himself. When the bull got close to him, he clumsily stepped aside to let it pass. The crowd broe into cheers and the drun bowed. By this time, however, three men had come into the ring and they quicly dragged the drun to safety. Even the bull seemed to feel sorry for him, for it looed on sympathetically until the drun was out of the way before once more turning its attention to the matador. Lesson71 A famous clock 一个著名的大钟 When you visit London, one of the first things you will see is Big Ben, the famous cloc which can be heard all over the world on the B.B.C. If the Houses of Parliament had hot been burned down in 1834, the great clock would never have been erected. Big Ben taes its name from Sir Benjamin Hall who was responsible for the making of the cloc when the new Houses of Parliament were being built. It is not only of immense size, but is extremely accurate as well. Officials from Greenwich Observatory have the clock checked twice a day. On the B.B.C. you can hear the clock when it is actually striking because microphones are connected to the clock tower. Big Ben has rarely gone wrong. Once, however, it failed to give the correct time. A painter who had been woring on the tower hung a pot of paint on one of the hands and slowed it down ! Lesson72 A car called Bluebird “蓝鸟”汽车 The great racing driver, Sir Malcolm Campbell, was the first man to drive at over 300 miles per hour. He set up a new world record in September 1935 at Bonneville Salt Flats, Utah. Bluebird, the car he was driving, had been specially built for him. It was over 30 feet in length and had a 2500 horse-power engine. Although Campbell reached a speed of over 304 miles per hour, he had great difficulty in controlling the car because a tyre burst during the first run. After his attempt, Campbell was disappointed to learn that his average speed had been 299 miles per hour. However, a few days later, he was told that a mistake had been made. His average speed had been 301 miles per hour. Since that time, racing drivers have reached speeds of over 400 miles an hour. Following is father's footsteps many years later, Sir Malcolm's son, Donald, also set up a world record. Like his father, he was driving a car called Bluebird. Lesson73 The record-holder 纪录保持者 Little boys who play truant from school are unimaginative. A quiet day's fishing, or eight hours in a cinema seeing the same film over and over again, is usually as far as they get. They have all been put to shame by a boy who, while playing truant, travelled 1600 miles. He hitch- hiked to Dover and, towards evening, went into a boat to find somewhere to sleep. When he woe up next morning, he discovered that the boat had, in the meantime, travelled to Calais. No one noticed the boy as he crept off. From there, he hitch-hiked to Paris in a lorry. The driver gave him a few biscuits and a cup of coffee and left him just outside the city. The next car the boy stopped did not tae him into the centre of Paris as he hoped it would, but to Perpignan on the French-Spanish border. There he was piced up by a policeman and sent backto England by the local authorities. He has surely set up a record for the thousands of boys who dream of evading school. Lesson74 Out of the limelight 舞台之外 An ancient bus stopped by a dry river bed and a party of famous actors and actresses got off. Dressed in dar glasses and old clothes, they had taken special precautions so that no one should recognize them. But as they soon discovered, disguises can sometimes be too perfect. 'This is a wonderful place for a picnic,' said Gloria Gleam. ' It couldn't be better, Gloria,' Brinsley Meers agreed. 'No newspaper men, no film fans! Wh don't we come more often ?' Meanwhile, two other actors, Rocwall Slinger and Merlin Greeves, had carried two large food baskets to a shady spot under some trees. When they had all made themselves comfortable, a stranger appeared. He looked very angry. 'Now ou gut out of here, all of you!' he shouted: ' I'm sheriff here. Do you see that notice ? It says\in case you can't read !' ' Look, sheriff, 'said Rocwall,' don't be too hard on us. I'm Rocwall Slinger and this is Merlin Greeves.' ' Oh, is it ?' said the sheriff with a sneer. 'Well, I'm Brinksley Meers, and my other name is Gloria Gleam. Now you get out of here fast !' lesson75 SOS 呼救信号 When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed. The only passengers, a young woman and her two baby daughters, were unhurt. It was the middle of winter. Snow lay thic on the ground. The woman knew that the nearest village was miles away. When it grew dark. she turned a suitcase into a bed and put the children inside it, covering them with all the clothes she could find. During the night, it got terribly cold. The woman kept as near as she could to the children and even tried to get into the case herself, but it was too small. Early ,next morning she heard planes passing overhead and wondered how she could send a signal. Then she had an idea. She stamped out the letters' SOS' in the snow. Fortunately, a pilot saw the signal and sent a message by radio to the nearest town. It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash. Lesson76 April Fools Day 愚人节 'To end our special news bulletin,' said the voice of the television announcer,' we are taking you to the macaroni fields of Calabria. Macaroni has been grown in this area for over six hundred years. Two of the leading growers, Giuseppe Moldova and Ricardo Brabante, tell me that they have been expecting a splendid crop this year and harvesting has begun earlier than usual. Here you can see two workers who, between them, have just finished cutting three cart-loads of golden brown macaroni stalks. The whole village has been woring day and night gathering and threshing this year's crop before the September rains. On the right, you can see Mrs Brabante herself. She has been helping her husband for thirty years now. Mrs Brabante is talking to the manager of the local factory where the crop is processed. This last scene shows you what will happen at the end of the harvest : the famous Calabrian macaroni-eating competition ! Signor Fratelli, the present champion, has won it every year since 1961. And that ends our special bulletin for today, Thursday, April 1st. We are now returning you to the studio.' Lesson77 A successful operation 一例成功的手术 The mummy of an Egyptian woman who died in 800 B.C. has just had an operation. The mummy is that of Shepenmut who was once a singer in the Temple of Thebes. As there were strange marks on the X-ray plates taken of the mummy, doctors have been trying to find out whether the woman died of a rare disease. The only way to do this was to operate. The operation, which lasted for over four hours, proved to be very difficult because of the hard resin which covered the skin. The doctors removed a section of the mummyand sent it to a laboratory. They also found something which the X-ray of the god Duamutef. This god which has the head of a cow was normally placed inside a mummy. The doctors have not yet decided how the woman died. They feared that the mummy would fall to pieces when they cut it open, but fortunately this has not happened. The mummy successfully survived the operation. Lesson78 The last one? 最后一枝吗？ After reading an article entitled 'Cigarette Smoking and Your Health' I lit a cigarette to calm my nerves. I smoked with concentration and pleasure as I was sure that this would be my last cigarette. For a whole week I did not smoe at all and during this time, my wife suffered terribly. I had all the usual symptoms of someone giving up smoing: a bad temper and an enormous appetite. My friends ept on offering me cigarettes and cigars. They made no effort to hide their amusement whenever I produced a packet of sweets from my pocket. After seven days of this I went to a party. Everybody around me was smoking and I felt extremely uncomfortable. When my old friend Brian urged me to accept a cigarette, it was more than I could bear. I too one guiltily, lit it and smoked with satisfaction. My wife was delighted that things had returned to normal once more. Anywayas Brian pointed out, it is the easiest thing in the world to give up smoking. He himself has done it lots of times! Lesson79 By air 乘飞机 I used to travel by air a great deal when I was a boy. M parents, used to live in South America and I used to fly there from Europe in the holidays. An airhostess would tae charge of me and I never had an unpleasant experience. I am used to travelling byair and only on one occasion have I ever felt frightened. After taking off, we were flying low over the city and slowlygaining height, when the plane suddenly turned round and flew back to the airport. While we were waiting to land, an air-hostess told us to eep calm and to get off the plane quietly as soon as it had touched down. Everybody on board was worried and we were curious to find out what had happened. Later we learnt that there was a very important person on board. The police had been told that a bomb had been planted on the plane. After we had landed, the plane was searched thoroughly. Fortunately, nothing was found and five hours later we were able to take off again. Lesson80 The Crystal Palace 水晶宫Perhaps the most extraordinary building of the nineteenth century was the Crystal Palace, which was built in Hyde Park for the Great Exhibition of 1851. The Crystal Palace was different from all other buildings in the world, for it was made of iron and glass. It was one of the biggest buildings of all time and a lot of people from man countries came to see it. A great many goods were sent to the exhibition from various parts of the world. There was also a great deal of machinery on display. The most wonderful piece of machinery on show was Nasmyth's steam hammer. Though in those days, travelling was not as easy as it is today, steam boats carried thousands of visitors across the Channel from Europe. On arriving in England, they were taken to the Crystal Palace b train. There were six million visitors in all, and the profits from the exhibition were used to build museums and colleges. Later, the Crystal Palace was moved to South London. It remained one of the most famous buildings in the world until it was burnt down in 1936. Lesson81 Escape 脱逃 When he had killed the guard, the prisoner of war quicly dragged him into the bushes. Woring rapidly in the darness, he soon changed into the dead man's clothes. Now, dressed in a blue uniform and with a rifle over his shoulder, the prisoner marched boldly up and down in front of the camp. He could hear shouting in the camp itself. Lights were blazing and men were