2009的职称英语考试理工类B级真题及答案解析完全版

1、2009年职称英语考试理工类B级真题及答案第1部分：词汇选项（第115题，每题1分，共15分）下面每个句子中均有1个词或短语划有横线，请为每处划线部分确定1个意义最为接近的选项。1Would you please call my husband as soon as possible?Aphone B visit Cconsult D invite2We had a long conversation about her parents.Aspeech Bquestion Cdebate Dtalk3The chairman proposed that we stop the meeting.

2、Astated B announced Csuggested D demanded4Obviously these people can be relied on in a crisis.Adepended on B lived on Cbelieved in D joined in5There is always excitement at the Olympic Games when an athlete breaks a record.Amaintains B beats Cmatches D tries6All the pupils seem to be very cheerful.A

3、healthy B happy Cnaughty D busy7The traditional paintings are exhibited on the second floor.Adisplayed B laid Ckept D stored8She stood there, shaking with fury.Amisery B laughter Ccry D anger9Mary evidently is the most diligent student among usAintelligent B beautiful Chardworking D talkative10 Pers

4、istent attempts to interview Garbo were fruitless.A Forceful BReasonable C Firm DContinuous11 Why can't you stop your eternal complaining?Along B everlasting Ctemporary D boring12 Hundreds of buildings were wrecked by the earthquake.Adamaged B shaken Cfallen D jumped13 These paintings are consid

5、ered by many to be authentic.Afaithful B royal Csincere D genuine14 Many economists have given in to the fatal lure of mathematics.Asimplicity B attraction Cpower D rigor15 Ten years after the event, her death still remains a puzzleAmist B fog Csecret D mystery第2部分：阅读判断（第1622题，每题1分，共7分）下面的短文后列出了7个句子

6、，请根据短文的内容对每个句子做出判断：如果该句提供的是正确信息，请选择A；如果该句提供的是错误信息，请选择B；如果该句的信息文中没有提及，请选择C。 Radiocarbon DatingNowadays scientists can answer many questions about the past through a technique called radiocarbon (放射性碳), or carbon-14, dating. One key to understanding how and by something happened is to discover when it

7、 happened.Radiocarbon dating was developed in the late 1940s by physicist Willard F. Libby at he University of Chicago. An atom of ordinary carbon, called carbon-12, has six protons(中子) and six neutrons (质子) in its nucleus. Carbon-14, or C-14, is a radioactive, unstable form of carbon that has two e

8、xtra neutrons (原子核). It returns to a more stable form of carbon through a process called decay (衰减). This process involves the loss of he extra neutrons and energy from the nucleus.In Libby's radiocarbon dating technique, the weak radioactive emissions (放射) from his decay process are counted by

9、instruments such as a radiation detector and counter. he decay rate is used to determine the proportion of C-14 atoms in the sample being dated.Carbon-14 is produced in the Earth's atmosphere when nitrogen (氮)-14, or N-14,interacts with cosmic rays (宇宙射线). Scientists believe since the Earth was

10、formed, the mount of nitrogen in the atmosphere has remained constant. Consequently, C-14 formation is thought to occur at a constant rate. Now the ratio of C-14 to other carbon toms in the atmosphere is known. Most scientists agree that this ratio is useful for dating items back to at least 50,000

11、years.All life on Earth is made of organic molecules (分子) that contain carbon atoms coming from the atmosphere. So all living things have about the same ratio of C-14atoms to other carbon atoms in their tissues (组织). Once an organism (有机体) dies it tops taking in carbon in any form, and the C-14 alre

12、ady present begins to decay. Over time the amount of C-14 in the material decreases, and the ratio of C-14 to other carbon toms goes down. In terms of radiocarbon dating, the fewer C-14 atoms in a sample, the older that sample is.16Nowadays many scientists depend on radiocarbon for dating age-old ob

13、jectsA Right BWrong C Not mentioned17The radiocarbon dating technique is only about 40 years oldA Right BWrong C Not mentioned18An atom of ordinary carbon has six protons and eight neutronsA Right BWrong C Not mentioned19Radar is used to determine the characteristics of radiocarbonA Right BWrong C N

14、ot mentioned20Radiocarbon is reliable in dating an object back to at least 50,000 years.A Right BWrong C Not mentioned21The C-14 in an organism begins to decay when it diesA Right BWrong C Not mentioned22The half-life of C-14 is about 25,000 years.A Right BWrong C Not mentioned第3部分：概括大意与完成句子（第2330题，

15、每题1分，共8分）下面的短文后有2项测试任务：（1）第2326题要求从所给的6个选项中为第14段每段1选择个最佳标题；（2）第2730题要求从所给的6个选项中为每个句子确定1个最佳选项。chimpanzees1 Chimpanzees (黑猩猩) will soon be extinct (灭绝). If the present rate of hunting and habitat (栖息地) destruction continues, then within 20 years, there will be no chimpanzees living in the wild. But th

16、is is more than an environmental or moral tragedy (悲剧). Chimpanzee extinction may also have profound implications (含意) for the survival of their distant relatives - human beings.2In 1975 the biologist Marie-Claire King and Allan Wilson discovered that the human and chimpanzee genomes (基因组) match by

17、over 98%. Compare this to the mouse, used as model for human disease in lab tests, which shares only 60% of its DNA with us. In fact, chimpanzees are far more similar to humans than they are to any other species of monkey. As well as resembling us genetically, chimps are highly intelligent and able

18、to use tools. These facts alone should be enough to make protection of chimps an urgent priority (优先). But there is another, more selfish reason to preserve the chimp.3The chimpanzees' trump card (王牌) comes in the field of medical research. Chimpanzees are so similar to humans that veterinarians

19、 (兽医) often refer to human medical textbooks when treating them. Yet chimpanzees do show differences in several key areas. In particular, chimps are much more resistant to a number of major diseases. It is this ability that is so interesting.4For example, chimps seem to show a much higher resistance

20、 than humans to HIV, the virus that causes AIDS. Indeed, their use as experimental animals in AIDS research has declined because they are so resistant.5By sequencing the chimp genome and pinpointing (找到) the place where the chimpanzee DNA sequence differs from that of humans, scientists hope to be a

21、ble to discover which part of the genetic code gives chimps their increased resistance to some diseases. This, they hope, will allow them to develop new and more effective treatments for the human forms of these diseases. Such treatments could include the production of new drugs or even the alterati

22、on (改变) of the human genetic sequence. The recently completed human genome sequencing project has shown that such an effort is now well within our reach.23Paragraph 124Paragraph 225Paragraph 326Paragraph 4AGenetic differences between chimps and humansBReasons for HIV resistanceCImplications of chimp

23、anzee extinction for humansDEffective AIDS treatmentEGenetic similarities between chimps and humansFChimps' resistance to HIV27Chimpanzee extinction may affect28There is a difference ofless than 2% between the chimp and29Scientists suspect that genes.PlaY a significant role in protecting chimps

24、from getting30The discovery of the genetic code of chimps will be helpful toAhealthier lifestyleBsome human disease treatmentsCsome diseasesDhuman survivalEhuman genomesFkey areas第4部分：阅读理解（第3145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。第一篇water The second most important constituent (构成成

25、份) of the biosphere (生物圈) is liquid water. This can only exist in a very narrow range of temperatures, since water freezes at 0 and boils at 100. Life as we know it would only be possible on the surface of a planet which had temperatures somewhere within this narrow range.The earth's supply of w

26、ater probably remains fairly constant in quantity. The total quantity of water is not known very accurately, but it is about enough to cover the surface of the globe to a depth of about two and three-quarter kilometers. Most of it is in the form of the salt water of the oceans - about 97 per cent. T

27、he restis fresh, but three-quarters of this is in the form of ice at the Poles and on mountains, and cannot be used by living systems until melted. Of the remaining fractional which is somewhat less than one per cent of the whole, there is 10-20 times as much stored underground water as there is act

28、ually on the surface. There is also a tiny, but extremely important fraction of the water supply which is present as water vapor in the atmosphere.Water vapor in the atmosphere is the channel through which the whole watercirculation (循环) of the biosphere has to pass. Water evaporated (蒸发) from the s

29、urface of the oceans, from lakes and rivers and from moist (潮湿的) earth is added to it. From it the water comes out again as rain or snow, falling on either the sea or the land. There is, as might be expected, a more intensive evaporation per unit area over the sea and oceans than over the land, but

30、there is more rainfall over the land than over the oceans, and the balance is restored by the runoff from the land in the form of rivers.31Liquid water only existsAin the center of the earth.Bon the surface of our planet.Cin the coastal areas of the earth.Din a very narrow range of temperatures.32Th

31、e total quantity of water on EarthAhas greatly increased in recent years.Bremains almost unchanged.Cis decreasing constantly.Dis affected by global warming.33Most of the fresh water on EarthAis in the form of ice at the Poles and on mountainsBis stored underground.Cis found in rivers and lakes.Dcome

32、s from the rain.34The word "fraction" in the second paragraph meansAa large area.Ba very small amount.Can important system.Da major source of information35There is more of rainfallAover the mountains than over the rivers.Bover the rivers than over the mountainsCover the land than over the

33、oceans.Dover the oceans than over the land.第二篇ind-reading MachineA team of researchers in California has developed a way to predict what kinds of objects people are looking at by scanning (扫描) what's happening in their brains.When you look at something, your eyes send a signal about that object

34、to your brain. Different regions of the brain process the information your eyes send. Cells in your brain called neurons (神经元) are responsible for this processing.The fMRI (functional Magnetic Resonance Imaging) (功能性磁振造影) brain scans could generally match electrical activity in the brain to the basi

35、c shape of a picture that someone was looking at.Like cells anywhere else in your body, active neurons use oxygen. Blood brings oxygen to the neurons, and the more active a neuron is, the more oxygen it will consume. The more active a region of the brain, the more active its neurons, and in turn, th

36、e more blood will travel to that region. And by using fMRI, scientists can visualize (使显现) which parts of the brain receive more oxygen-rich blood - and therefore, which parts are working to process information.An fMRI machine is a device that scans the brain and measures changes in blood flow to th

37、e brain. The technology shows researchers how brain activity changes when a person thinks, looks at something, or carries out an activity like speaking or reading. By highlighting the areas of the brain at work when a person looks at different images, fMRI may help scientists determine specific patt

38、erns of brain activity associated with different kinds of images.The California researchers tested brain activity by having two volunteers view hundreds of pictures of everyday objects, like people, animals, and fruits. The scientists used an fMRI machine to record the volunteers' brain activity

39、 with each photograph they looked at. Different objects caused different regions of the volunteers' brains to light up on the scan, indicating activity. The scientists used this information to build a model to predict how the brain might respond to any image the eyes see.In a second test, the sc

40、ientists asked the volunteers to look at 120 new pictures. Like before, their brains were scanned every time they looked at a new image. This time, the scientists used their model to match the fMRI scans to the image. For example, if a scan in the second test showed the same pattern of brain activit

41、y that was strongly related to pictures of apples in the first test, their model would have predicted the volunteers were looking at apples.36What is responsible for processing the information sent by your eyes?AThe magnetic system in the brain.BThe central part of the heart.CNeurons in the brain.DO

42、xygen-rich blood.37The function of an fMRI machine isAto show how neutrons take in oxygen-rich blood.Bto measure how dense the blood is in the brain.Cto identify which parts of the brain are processing informationDto record how much oxygen the brain consumes.38The expression "highlighting the a

43、reas of the brain at work' in paragraph 5 meansAmarking the parts of the brain that are processing information.Bgiving light to the parts of the brain that are processing information.Cputting the parts of the brain to work.Dpreventing the parts of the brain from working.39The researchers experim

44、ented onAanimals and objects.BfMRI machines.Cthousands of pictures.Dtwo volunteers.40Which of the following can best replace the title of the passage?AYour Thoughts Can Be Scanned.BRecent Development in Science and TechnologyCA Technological Dream.DAn Intelligent Robot.第三篇Youth Emancipation in Spain

45、 The Spanish Government is so worried about the number of young adults still living with their parents that it has decided to help them leave the nest.Around 55 percent of people aged 18-34 in Spain still sleep in their parents' homes, says the latest report from the country's state-run

46、 Institute of Youth.To coax (劝诱) young people from their homes, the Institute started a "YouthEmancipation (解放)" program this month. The program offers guidance in finding rooms and jobs.Economists blame young people's family dependence on the precarious (不稳定的) labor market and increas

47、ing housing prices. Housing prices have risen 17 percent a year since 2000.Cultural reasons also contribute to the problem, say sociologists (社会学家). Family ties in south Europe - Italy, Portugal and Greece - are stronger than those in middle and north Europe, said Spanish sociologist Almudena Moreno

48、 Minguez in her report "The Late Emancipation of Spanish Youth: Key for Understanding"."In general, young people in Spain firmly believe in the family as the main body around which their private life is organized," said Minguez.In Spain - especially in the countryside, it is not

49、uncommon to find entire groups of aunts, uncles, cousins, nieces and nephews (外侄/侄子) all living on the same street. They regularly get together for Sunday dinner.Parents' tolerance is another factor. Spanish parents accept late-night partying and are wary of setting bedtime rules."A child c

50、an arrive home at whatever time he wants. If parents complain he'll put up a fight and call the father a fascist," said Jose Antonio G6mez Yanez, asociologist at Carlos III University in Madrid.Mothers' willingness to do children's household chores (家务) worsens the problem. Dionisio

51、 Masso, a 60-year-old in Madrid, has three children in their 20s. The eldest, 28, has a girlfriend and a job. But life with mum is good."His mum does the wash and cooks for him; in the end, he lives well," Masso said.41The "Youth Emancipation" program aims at helping young people

52、Alive in an independent way.Bfight for freedom.Cfight against social injustice.Dget rid of family responsibilities.42It can be inferred from paragraph 5 that family ties are stronger in Portugal than inAGreece. BFinland. CSpain. DItaly.43Young people's family dependence can be attributed to all

53、the following factorsEXCEPTAparents' tolerance. Bhousing problems.Cunwillingness to get married. Dcultural traditions.44Which of the following statements is NOT true of Dionisio Masso?A She has a boyfriend. B She is 60 years old. C She has three children. D She lives in Madrid.45The phrase "

54、;wary of" in paragraph 8 could be best replaced byAtired of. Bafraid of. Cworried about. Dcautious about. 第5部分：补全短文（第4650题，每题2分，共10分）下面的短文有5处空白，短文后有6个句子，其中5个取自短文，请根据短文内容将其分别放回原有位置，以恢复文章原貌。Reduce PackagingPressure increased recently on British supermarkets and retailers to reducepackaging as par

55、t of an anti-waste campaign.(46) Britain generates 4.6 million tons of household waste every year by packaging.Dozens of people have expressed anger at the excess of plastic wrapping.Campaigners have called on Britain to learn from other European countries.(47) When returned bottles are put in a ven

56、ding machine (自动售货机), the deposit is refunded. Environmentalists warn that Britain lags behind in this.There were reports of growing unease among consumers over the amount of packaging they have to deal with. Trade standards officers also object to excessivepackaging.(48)In response to a campaign by

57、 Britain's The Independent newspaper, leadingsupermarkets have pointed to various initiatives to win the public confidence.(49)But campaigners said retailers and the government could learn much from anti-waste practices on the Continent. In Sweden, non-recyclable batteries have beentaxed since 1991 to encourage a switch to alternatives.(50) In Germany, plastic bags are unheard of in supermarkets and deposits are paid for reusable plastic and glass beverage bottles.AIf a product is