职称英语理工类C级-25及答案解析.doc

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1、职称英语理工类 C级-25 及答案解析(总分：100.00，做题时间：90 分钟)一、第 1部分：词汇选项(总题数：15，分数：15.00)1.Did anyone call me when I was out? A. invite B. name C. answer D. phone（分数：1.00）A.B.C.D.2.I rarely play basketball. A. normally B. seldom C. frequently D. usually（分数：1.00）A.B.C.D.3.There is no risk to public health. A. point B.

2、danger C. chance D. hope（分数：1.00）A.B.C.D.4.It took us a long time to mend the house. A. build B. destroy C. design D. repair（分数：1.00）A.B.C.D.5.It is obvious that he will win the game. A. likely B. possible C. clear D. unwilling（分数：1.00）A.B.C.D.6.My father is a physician. A. researcher B. professor C

3、. doctor D. student（分数：1.00）A.B.C.D.7.I dont quite follow what she is saying. A. believe B. understand C. explain D. accept（分数：1.00）A.B.C.D.8.This reminds me of lots of things. A. much B. some C. big D. many（分数：1.00）A.B.C.D.9.Man cannot exit without water. A. expand B. rise C. live D. quit（分数：1.00）A

4、.B.C.D.10.She will be very pleased to meet you. A. angry B. happy C. sad D. unwilling（分数：1.00）A.B.C.D.11.Please put up your bands if you have any questions. A. raise B. reach C. wave D. fold（分数：1.00）A.B.C.D.12.Our English teacher is sick. A. fat B. weak C. ill D. mad（分数：1.00）A.B.C.D.13.The Foreign S

5、ervice is a branch of the Department of State. A. center B. division C. root D. base（分数：1.00）A.B.C.D.14.Mary is looking for the book she lost yesterday. A. trying to find B. trying to read C. trying to buy D. trying to borrow（分数：1.00）A.B.C.D.15.Jean has made up her mind not to go to the meeting. A.

6、tried B. promised C. decided D. attempted（分数：1.00）A.B.C.D.二、第 2部分：阅读判断(总题数：1，分数：7.00)Inventor of LEDWhen Nick Holonyak set out to create a new kind of visible lighting using semiconductor alloys, his colleagues thought he was unrealistic. Today, his discovery of light-emitting diodes, or LEDs, are u

7、sed in everything from DVDs to alarm clocks to airports. Dozens of his students have continued his work, developing lighting used in traffic lights and other everyday technology.On April 23, 2004, Holonyak received the $500, 000 Lemelson-MIT Prize at a ceremony in Washington. This marks the 10th yea

8、r that the Lemelson-MIT Program at the Massachusetts Institute of Technology (MIT) has given the award to prominent inventors. “Anytime you get an award big or little. Its always a surprise.“ Holonyrak said. Holonyak, 75, was a student of John Bardeen, an inventor of the transistor, in the early 195

9、0s. After graduate school, Holonyak worked at Ben Labs. He later went to General Electric, where he invented a switch now widely used in house dimmer switches.Later, Holonyak started looking into how semiconductors could be used to generate light. But while his colleagues were looking at how to gene

10、rate invisible light, he wanted to generate visible light. The LEDS he invented in 1962 now last about 10 times longer than incandescent bulbs, and are more environmentally friendly and effective.Holonyak, now a professor of electrical and computer engineering and physics at the University of Illino

11、is, said he suspected that LEDs would become as commonplace as they are today, but didnt realize how many uses they would have.“You dont know in the beginning. You think youre doing something important. You think its worth doing, but you really cant tell what the big payoff is going to be, and when,

12、 and how. You just dont know, “he said.The Lemelson. MIT Program also recognized Edith Flanigen, 75, with the $100,000 Lemelson-MIT Lifetime Achievement Award for her work on a new generation of “molecular sieves“, that can separate molecules by size.（分数：7.00）(1).Holonyaks colleagues thought he woul

13、d fail in his research on LEDs at the time when he started it.（分数：1.00）A.RightB.WrongC.Not mentioned(2).Holonyak believed that his students that were working with him on the project would get the Lemelson-MIT Prize sooner or later.（分数：1.00）A.RightB.WrongC.Not mentioned(3).Holonyak was the inventor o

14、f the transistor in the early 1950s.（分数：1.00）A.RightB.WrongC.Not mentioned(4).Holonyak believed that LEDs would become very popular in the future.（分数：1.00）A.RightB.WrongC.Not mentioned(5).Holonyak said that you should not do anything you are not interested in.（分数：1.00）A.RightB.WrongC.Not mentioned(6

15、).Edith Flanigen is the only co-inventor of LEDs.（分数：1.00）A.RightB.WrongC.Not mentioned(7).The Lemelson-MIT Prize has a history of over 100 years.（分数：1.00）A.RightB.WrongC.Not mentioned三、第 3部分：概括大意与完成句子(总题数：2，分数：8.00)A Threat Posed by EnglishB Definition of a Speech CommunityC Benefits of Learning a

16、Second LanguageD Advantages of Learning ChineseE Two Groups of the English Speech CommunityF A Widely Used Language（分数：4.00）(1).Paragraph 1_（分数：1.00）填空项 1:_(2).Paragraph 2_（分数：1.00）填空项 1:_(3).Paragraph 3_（分数：1.00）填空项 1:_(4).Paragraph 4_（分数：1.00）填空项 1:_A a second languageB the same languageC the same

17、 speech communityD any other languageE national boundariesF a part of ones heritage（分数：4.00）(1).Overall there are more speakers of Chinese than of_（分数：1.00）填空项 1:_(2).The boundaries of a speech community may be different from_（分数：1.00）填空项 1:_(3).People who live in different places may belong to_（分数：

18、1.00）填空项 1:_(4).Many people learn English as_（分数：1.00）填空项 1:_四、第 4部分：阅读理解(总题数：0，分数：0.00)五、第一篇(总题数：1，分数：15.00)Arctic MeltEarths North and South Poles are famous for being cold and icy. Last year, however, the amount of ice in the Arctic Ocean fell to a record low.Normally, ice builds in Arctic waters

19、 around the North Pole each winter and shrinks during the summer. But for many years, the amount of ice left by the end of summer has been declining.Since 1979, each decade has seen an 11.4 percent drop in end of summer ice cover. Between 1981 and 2000, ice in the Arctic lost 22 percent of its thick

20、ness, becoming 1.13 meters thinner.Last summer, Arctic sea ice reached its skimpiest levels yet. By the end of summer 2007, the ice had shrunk to cover just 4.2 million square kilometers. Thats 38 percent less area than the average cover at that time of year. And its a very large 23 percent below th

21、e previous record low, which was set just 2 years ago. This continuing trend has scientists concerned.There may be several reasons for the ice melt, says Jinlun Zhang, an oceanographer at the University of Washington at Seattle. Unusually strong winds blew through the Arctic last summer. The winds p

22、ushed much of the ice out of the central Arctic, leaving a large area of thin ice and open water.Scientists also suspect that fewer clouds cover the Arctic now than in the past. Clearer skies allow more sunlight to reach the ocean. The extra heat warms both the water and the atmosphere. In parts of

23、the Arctic Ocean last year, surface temperatures were 3.5 warmer than average and 1.5 warmer than the previous record high.With both air and water getting warmer, the ice is melting from both above and below. In some parts of the Beaufort Sea, north of Alaska and western Canada, ice that measured 3.

24、3 meters thick at the beginning of the summer measured just 50 centimeters by seasons end.The new measurements suggest that melting is far more severe than scientists have seen by just looking at ice cover from above, says Donald K. Perovich, a geophysicist at the U. S. Army Cold Regions Research an

25、d Engineering Laboratory in Hanover, N. H.Some scientists fear that the Arctic is stuck in a warming trend from which it may never recover.（分数：15.00）(1).Which of the following is closest in meaning to the word “build“ in the first sentence of the second paragraph?（分数：3.00）A.constructB.extendC.create

26、D.expand(2).What is the ice cover in the Arctic by the end of 2007 summer?（分数：3.00）A.4.2 million square kilometersB.11.4 million square kilometersC.1.13 million square kilometersD.38 million square kilometers(3).What are the reasons for the ice melting according to the scientists?（分数：3.00）A.strong w

27、inds and clear skiesB.long summer and short winterC.open water and thin iceD.light clouds and light winds(4).Why is the ice melting from both above and below?（分数：3.00）A.Because extra heat warms the air.B.Because extra heat warms the water.C.Because the temperature above the water is higher.D.Both A

28、and(5).What can be a possible title for the passage?（分数：3.00）A.What are scientists looking for in the Arctic Ocean?B.What are scientists doing in the Arctic Ocean?C.Why are scientists worrying about the Arctic Ocean?D.Why are scientists interested in the Arctic Ocean?六、第二篇(总题数：1，分数：15.00)Citizen Sci

29、entistsUnderstanding how nature responds to climate change will require monitoring key life cycle event-flowering, the appearance of leaves, the first frog calls of the spring all around the world.But ecologists cant be everywhere so theyre turning to non-scientists, sometimes called citizen scienti

30、sts, for help.Climate scientists are not present everywhere. Because there are so many places in the world and not enough scientists to observe all of them, theyre asking for your help in observing signs of climate change across the world. The citizen scientist movement encourages ordinary people to

31、o observe a very specific research interest-birds, trees, flowers budding, etc. and send their observations to a giant database to be observed by professional scientists. This helps a small number of scientists track a large amount of data that they would never be able to gather on their own. Much l

32、ike citizen journalists helping large publications cover a hyper-local beat, citizen scientists are ready for the conditions where they live. All thats needed to become one is a few minutes each day or each week to gather data and send it in.A group of scientists and educators launched an organizati

33、on last year called the National Phenology Network. “Phenology“ is what scientists call the study of the timing of events in nature.One of the groups first efforts relies on scientists and non-scientists alike to collect data about plant flowering and leafing every year. The program, called Project

34、BudBurst, collects life cycle data on a variety of common plants from across the United States. People participating in the project which is open to everyone record their observations on the Project BudBurst website.“People dont have to be plant experts, they just have to look around and see whats i

35、n their neighborhood,“ says Jennifer Schwartz, an education consultant with the project. “As we collect this data, well be able to make an estimate of how plants and communities of plants and animals will respond as the climate changes./（分数：15.00）(1).Ecologists turn to non-scientist citizens for hel

36、p because they need them_.（分数：3.00）A.to provide their personal life cyclesB.to observe the life cycle of plantsC.to collect data of the life cycle of living thingsD.to teach children knowledge about climate change(2).What are citizen scientists asked to do?（分数：3.00）A.To develop a specific research i

37、nterest and become professional scientists.B.To send their research observations to a professional database.C.To increase their knowledge about climate change.D.To keep a record of their research observations.(3).In “All thats needed to become one.(paragraph 2)“, what does the word “one“ stands for?

38、（分数：3.00）A.a citizen journalistB.a citizen scientistC.a scientistD.a citizen(4).What is NOT true of Project BudBurst?（分数：3.00）A.Only experts can participate in it.B.Everybody can participate in it.C.It collects life cycle data on a variety of common plants.D.It has its own websit(5).What is the fina

39、l purpose of Project BudBurst?（分数：3.00）A.To study when plants will have their first buds.B.To find out the types of plants in the neighborhood.C.To collect life cycle data on a variety of common plants from across the United States.D.To investigate how plants and animals will respond as the climate

40、changes.七、第三篇(总题数：1，分数：15.00)Rockets in the SkyIf someone asked you. “What color is the sky?“ I expect that you would answer, “Blue.“ I am afraid that you would be wrong. The sky has no color. When we see blue, we are looking at blue sunlight. The sunlight is shining on little bits of dust in the ai

41、r.We know that there is air all around the world. We could not breathe without air. Airplanes could not fly without air. They need air to lift their wings. Airplanes cannot fly very high because as they go higher the air gets thinner. If we go far enough away from the earth, we find there is no air.

42、 What is the sky? The sky is space. In this space there is nothing except the sun, the moon and all the stars.Scientists have always wanted to know more about the other worlds in the space. They have looked at them through telescopes and in this way they have found out a great deal.The moon is about

43、 384,000 kilometers away from the earth. An airplane cannot fly to the moon but there is a thing that can fly even when there is no air. This is rocket.I am sure that you are asking. “How does a rocket fly?“ If you want to know, get a balloon and then blow it up until it is quite big. Do not tie up

44、the neck of the balloon. Let go! The balloon will fly off through the air very quickly. The air inside the balloon tries to get out. It rushes out through neck of the ball off and this pushes the balloon through the air. It does not need wings like an air plane.This is how a rocket works. It is not

45、made of rubber like a balloon, of course. It is made of metal. The metal must not be heavy but it must be very strong. There is gas inside the rocket which is made very hot. When it rushes out of the end of the rocket, the rocket is pushed up into the air.Rockets can fly far out into space. Rockets

46、with men inside them have already reached the moon. Several rockets, without men inside them, have been sent to other worlds much farther away. One day rockets may be able to go anywhere in the space.（分数：15.00）(1).What color is the sky?（分数：3.00）A.It is blue.B.It is white.C.It is grey.D.It has no col

47、or.(2).When an airplane flies too high,_.（分数：3.00）A.the air will be too thin to support its wings.B.the air will become thicker.C.the air will exert pressure on it.D.the air will disappear in no tim(3).A rocket can fly to the moon because_.（分数：3.00）A.it looks like a balloon.B.it is much lighter than

48、 an airplane.C.it doesnt have wings.D.it works like an untied balloon.(4).Which of the following statements about a rocket is NOT true?（分数：3.00）A.It can fly when there is no air.B.It can fly without wings.C.It is made of strong metal.D.It is propelled by burning gas inside it.(5).A rocket is pushed

49、up into the air when_.（分数：3.00）A.hot gas rushes out of its head.B.it is powered by gas.C.hot gas rushes out of its bottom.D.hot gas rushes out of its neck.八、第 5部分：补全短文(总题数：1，分数：10.00)AIDSAs a science writer, I dont have to wear emotional armor very often. Before I went to Zimbabwe for a visit, I had talked to othe