新课标人教版选修8Unit3课文

新课标人教版选修8Unit3课文The Problem Of The Snakes

When I called up my mother in the countryside on the telephone she was very upset. There are some snakes in our courtyard, she told me. Snakes come near the house now and then, and they seem to have made them get rid ofyoufar from the walnut tree. Can here, their home not distinguish to chance was a for .me please? I felt very proud. Here that would catch snakes but not mercifulmyself by inventing somethingliving these to hurt me my parents would not like them. harm I knew creatures!

The first thing I did was to see if there were any products that might

there only seemed to be powders designed to kill snakes.help me, but A

new approach was clearly needed. I set about researching the habits of snakes to find the easiest way to trap them. Luckily these reptiles are small and that made the solution easier.

Prepared with some research findings, I decided on three possible approaches: firstly, removing their habitat; secondly, attracting them into a trap using male or female perfume or food; and thirdly cooling them so that they would become sleepy and could be easily caught. I decided to use the last one. I bought an ice-cream maker which was made of

stainless steel. Between the outside and the inside walls of the bowl there

is some jelly, which freezes when cooled. I put the bowl into the fridge

and waited for 24 hours. At the same time I prepared some ice-cubes.

新课标人教版选修8Unit3课文The next morning I got up early before the sun

was hot. I placed the

frozen bowl over the snakes' habitat and the ice-cubes on top of the bowl bucket. with a large Finally I covered the whole thing cool. to keep it Then I waited. After two hours I removed the bucket and the bowl. The snakes were less active but they were still too fast for me. They abruptly disappeared into a convenient hole in the wall. So I had to adjust my plan. For the second attempt I froze the bowl and the ice-cubes again but temperature the evening, as the over the snakes' habitat in placed them was starting to cool. Then as before, I covered the bowl with the bucket and left everything overnight. Early the next morning I returned to see the snakes examine the to caution I bent down This result. time with great and I found them very sleepy. But once picked up, they tried to bite me. As they were poisonous snakes, I clearly needed to improve my design again.

My third attempt repeated the second procedure. The next morning I the in fish. This was for my hand a small net used catching carried in

expectation that the snakes would bite again. But monitored carefully, the snakes proved to be no trouble and all went according to plan. I collected the passive snakes and the next day we merrily released them all back into the wild.

Pressed by my friends and relations, I decided to seize the my

sending by idea successful my for recognition get to opportunity

8Unit3课文新课标人教版选修Only after you have had that

recognition invention to the patent office.

The criteria are so strict that it can you say that you are truly an inventor.

In novel. they are truly unless is difficult to get new ideas accepted addition, no invention will get a patent if it is: a discovery

a scientific idea or mathematical model literature or art a game or a business a computer programme a new animal or plant variety

out find made to a search has been until you Nor will receive a patent

There are a large that your product really is different from everyone else's.

number of patent examiners, too, whose only job is to examine whether your claim is valid or not. If it passes all the tests, your application for a patent will be published 18 months from the date you apply. So I have filled in the form and filed my patent application with the Patent Office. Now it's a matter of waiting and hoping. You'll know if I succeed by the size of my bank balance! Wish me luck!

ALEXANDER GRAHAM BELL

新课标人教版选修8Unit3课文

Alexander Graham Bell was born in 1847 in Scotland, but when he

was young his family moved to Boston, USA. His mother was almost entirely deaf, so Alexander became interested in helping deaf people communicate and in deaf education. This interest led him to invent the microphone. He found that by pressing his lips against his mother's forehead, he could make his mother understand what he was saying. He believed that one should always be curious and his most famous saying was:

Leave the beaten track occasionally and dive into the woods.

Every time you do you will be certain to find something

that you have

never seen before. Follow it up, explore all around it, and before you

know it, you will have something worth thinking about to occupy your

mind. All really big discoveries are the result of thought.

It was this exploring around problems and his dynamic spirit that led to his most famous invention - the telephone in 1876. Bell never set out to invent the telephone and what he was trying to design was a multiple telegraph. This original telegraph sent a message over distances using Morse code (a series of dots tapped out along a wire in a particular order). But only one message could go at a time. Bell wanted to improve it so that it could send several messages at the same time. He designed a machine that would separate different sound waves and allow different

新课标人教版选修8Unit3课文

conversations to be held at the same time. But he found the problem difficult to solve. One day as he was experimenting with one end of a straw joined to a deaf man's ear drum and the other to a piece of smoked glass, Bell noticed that when he spoke into the ear, the straw drew sound waves on the glass. Suddenly he had a flash of inspiration. If sound waves could be reproduced in a moving electrical current, they could be sent along a wire. In searching to improve the telegraph, Bell had