职称英语考试《综合类》章节练习题精选
及答案0515-1
1、A Strong Greenhouse Gas1 Methane is a colorless, odorless gas; it is also a potent greenhouse gas, and once released into the atmospheres, it absorbs beat radiating from Earth\\'s surface. That\\'s why methane is a major contributor to the planet\\'s increasing temperature rise or global warming. Molecule for molecule, methane\\'s heat-trapping power in the atmosphere is 21 times stronger than carbon dioxide, the most abundant greenhouse gas.2 With 13 billion cows belching almost constantly around the world (100 million in the U. S. alone), it\\'s no surprise that menace released by livestock is one of the chief sources of the gas. Other prime methane sources: petroleum, drilling, coal mining, solid-waste landfills and wetlands.3 Greenhouse gases like methane and carbon dioxide make up only a small part of Earth\\'s atmosphere, which is 78 percent nitrogen and nearly 21 percent oxygen. And without greenhouse gases to trap the sun\\'s heat and warm the planet, life as we know it couldn\\'t exist. But in the last200 years, human activity that requires burning oil, natural gas, and coal for energy has
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magnified the greenhouse effect.4 Atmospheric concentrations of methane have more than doubled in the last two centuries. Blame for this often focuses on big industries and gas-guzzling vehicles. But agriculture plays a major role, too. In the past 40 years alone, the global cattle population has doubled.5 Cows munch mostly grasses and hay yet they grow big and hefty. Why? Because of the rumen. The rumen holds 160 liters of food and billions of microbes. These microscopic bacteria and protozoa break down cellulose and Fiber into digestible nutrients. A cow couldn\\'t live without its microbes. As the microbes digest cellulose, trey release methane. The process occurs in all animals with a rumen (cows, sheep, and goats, for example), and it makes them very gassy. It\\'s part of their normal digestion process. When they drew their cud, they regurgitate some food to rechew it, and all this gas comes out. The average cow expels 600 liters of methane a day.That\\'s why we say livestock gas is also a major factor of causing the global warming.Paragraph 2 ____【单选题】
A.Life of Macroscopic Bacteria in Livestock\\'s Rumen
B.Ways to Reduce Methane\\'s Heat-trapping Power
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C.Agriculture Also Contributes to Increased Concentrations of Methane in the Atmosphere
D.Why Livestock Releases Methane
E.Methane as a Strong Greenhouse Gas
F.Livestock as a Prime Factor of the Greenhouse Effect
正确答案:F
答案解析:本段要表达的中心意思是：livestock排出的甲烷也是温室效应的一个主要源头。
2、Intelligent Machines1. Medical scientists are already putting computer chips (芯片) directly into the brain to help people who have Parkinson\\'s disease, but in what other ways might computer technology be able to help us? Ray Kurzweil is author
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of the successful book The Age of Intelligent Machines and is one of the world\\'s best computer research scientists. He is researching the possibilities.2. Kurzweil gets computers to recognize voices. An example of this is Ramona; the virtual (虚拟的) hostess of Kurzweil\\'s homepage, who is programmed to understand what you say. Visitors to the site can have their conversations with her, and Ramona also dances and sings.3. Kurzweil uses this technology to help people with physical disabilities. One of his ideas is a \\world\探测器) which will probably be built into a pair of sunglasses. This sensor will describe to the person everything it sees.4. Another idea, which is likely to help deaf people, is the \machine\This invention will recognize millions of words and understand any speaker. The listening machine will also be able to trans late into other languages, so even people without hearing problems are likely to be interested in using it.5. But it is not just about helping people with disabilities. Looking further into the future, Kurzweil sees a time when we will be able to download our entire consciousness onto a computer. This technology probably won\\'t be ready for at least 50 years, but
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when it arrives, it means our minds will be able to live forever.Paragraph 3 ____【单选题】
A.A new pair of eyes
B.Computers that can communicate
C.Everlasting consciousness on a computer
D.Time to break off a friendship
E.An author and researcher
F.A new pair of ears
正确答案:A
答案解析:本题难度不大，考生只要认真阅读第三段，不难抓
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职称英语考试《综合类》章节练习题精选及答案0515-1
