2011年职称英语理工类C考前每日一练(12)

文章作者 100test 发表时间 2011:03:18 18:15:01
来源 100Test.Com百考试题网

下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。

　　第4部分：阅读理解(第31～45题，每题3分，共45分)
　　下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。
　　
　　31. Backpacks are convenient because
　　A. they can be very large.
　　B. they can hold as many things as you want to carry.
　　C. your handsare freed to do other things.
　　D. you do not have to carry things with you.
　　32. What is the most important feature of the backpack invented by Lawrence C. Rome and his colleagues?
　　A. It produces electricity for electronic devices while the wearer walks.
　　B. It can be used as cell phones, GPS in the military actions or field studies.
　　C. It is small and convenient.
　　D. It is light and easy to carry.
　　33. The word "springs" in Paragraph 3 means
　　A. a small stream of water flowing naturally from the earth.
　　B. the season of the year, occurring between winter and summer.
　　C. the act or an instance of jumping or leaping.
　　D. a length of metal wound around, which returns to its original shape after being pushed.
　　34. According to Paragraph 4,what does Rome plan to do?
　　A. To make the backpack more comfortable for the wearer.
　　B. To put the backpack on the market.
　　C. To test the advantage of the backpack.
　　D. To promote the backpack in a newspaper or on television.
　　35. What is implied in "if you do get one eventually ,just make sure to took both ways before crossing the street!"?
　　A. You will be too excited to watch the traffic.
　　B. Enjoying electronic devices while walking may invite traffic accidents.
　　C. It is not possible for you to get such a backpack.
　　D. It is wise of you to have such a backpack.
　　
　　
　　36. The Hyper-X broke the record because
　　A. it was the first air-breathing jet plane.
　　B. it flew along the equator,
　　C. it flew at speeds smaller than five times the speed of sound.
　　D. it traveled at a supersonic speed.
　　37. What kind of an engine did the Hyper-X use?
　　A. A jet engine that gets oxygen from the air.
　　B. A scramjet engine that doesnt carry its own oxygen supply.
　　C. A rocket engine that carries its own supply of oxygen.
　　D. A jet engine that uses no oxygen.
　　38. What is NOT true about the scramjet engine?
　　A. It goes slower than a rocket.
　　B. It extracts oxygen from the air that flows through the engine.
　　C. It works only at speeds greater than five times the speed of sound.
　　D. It doesnt carry its own oxygen supply.
　　39. What did Werner J. A. Dahm of the University of Michigan say about the Hyper-X test flight?
　　A. It indicated the birth of a very fast airplane.
　　B. It was self-powered, so it lasted only 11 seconds.
　　C. It can transportcargo quickly and cheaply to the brink of space.
　　D. It is a major milestone in the journey of making a new type of very fast airplanes.
　　40. What has NASA planned to do?
　　A. To make another 11-second hypersonic flight at 10 times the speed of the sound.
　　B. To make three more Hyper-X experiments.
　　C. To retest the aircraft that is left.
　　D. To make the aircraft fly higher and longer.
　　
　　
　　41. According to the first two paragraphs,the author thinks that
　　A. strong measures have been taken by the government to prevent global warming.
　　B. to reduce carbon emissions is all impossible mission.
　　C. despite the difficulty,scientists have some options to prevent global warming.
　　D. actions suggested by scientists will never be realized.
　　42. Scientists resist talking about their options because they dont want people to
　　A. know what they are doing.
　　B. feel their efforts are useless.
　　C. think the problem has been solved.
　　D. see the real problem.
　　43. What does Stephen Schneider say about a heroin addict and methadone?
　　A. Methadone is an effective way to treat a hard heroin addict.
　　B. Methadone is not a correct way to treat a heroin addict.
　　C. Hospitalization together with methadone can work efectively with a heroin addict.
　　D. Methadone and heroin are equally effective in treating a heroin addict.
　　44. What is Stephen Schneiders idea of preventing global warming?
　　A. To ask governments to take stronger measures.
　　B. To increase the sunlight reaching the Earth.
　　C. To apply sunscreen to the Earth.
　　D. To decrease greenhouse gases.
　　45. What is NOT true of the effectiveness of "sunscreen", according to the last paragraph?
　　A. It deflects sunlight reaching the Earth to counteract the warming.
　　B. It blocks the incident energy in the suns rays.
　　C. It is a controversial method.
　　D. It decreases greenhouse gases in the atmosphere.

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