2009年度全国职称英语等级考试理工类(B级)真题及答案(共13页).doc

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1、精选优质文档-倾情为你奉上2009年度全国职称英语等级考试理工类（B级）真题及答案人事考试教育网整理 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？ Avisit B phone Cconsult D invite 2We had a long conversation about her parents. Aspeech B question Ctalk D debate 3The chair

2、man proposed that we stop the meeting. Astated B announced Cdemanded D suggested 4Obviously these people can be relied on in a crisis. Alived on B depended on Cbelieved in D joined in 5There is always excitement at the Olympic Games when an athlete breaks a record. Abeats B maintains Cmatches D trie

3、s 6All the pupils seem to be very cheerful. Ahappy B healthy Cnaughty D busy 7The traditional paintings are exhibited on the second floor. Alaid B displayed Ckept D stored 8She stood there， shaking with fury. Amisery B laughter Canger D cry 9Mary evidently is the most diligent student among us Ainte

4、lligent B beautiful Ctalkative D hardworking 10 Persistent attempts to interview Garbo were fruitless. A Forceful BReasonable C Continuous D Firm 11 Why cant you stop your eternal complaining？ Aeverlasting B long Ctemporary D boring 12 Hundreds of buildings were wrecked by the earthquake. Ashaken B

5、damaged Cfallen D jumped 13 These paintings are considered by many to be authentic. Afaithful B royal Cgenuine D sincere 14 Many economists have given in to the fatal lure of mathematics. Aattraction B simplicity Cpower D rigor 15 Ten years after the event， her death still remains a puzzle Amist B f

6、og Cmystery D secret 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，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 Dating Nowadays scientists can answer many questions about the past through a technique called radiocarbon （放射性碳）， or carbon-14， dating. One key to unde

7、rstanding how and by something happened is to discover when it 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

8、 C-14， is a radioactive， unstable form of carbon that has two extra 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 Libbys radiocarbon dating technique， the weak radioa

9、ctive emissions （放射） from his decay process are counted by 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 Earths atmosphere when nitrogen （氮）-14， or N-14， interacts with cos

10、mic rays （宇宙射线）。 Scientists believe since the Earth was 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 r

11、atio is useful for dating items back to at least 50，000 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-14 atoms to other carbon atoms in their tissues （组织）。 Once an organism （有机体） di

12、es it tops taking in carbon in any form， and the C-14 already 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

13、many scientists depend on radiocarbon for dating age-old objects A Right BWrong C Not mentioned 17The radiocarbon dating technique is only about 40 years old A Right BWrong C Not mentioned 18An atom of ordinary carbon has six protons and eight neutrons A Right BWrong C Not mentioned 19Radar is used

14、to determine the characteristics of radiocarbon A Right BWrong C Not mentioned 20Radiocarbon is reliable in dating an object back to at least 50，000 years. A Right BWrong C Not mentioned 21The C-14 in an organism begins to decay when it dies A Right BWrong C Not mentioned 22The half-life of C-14 is

15、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，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。 Chimpanzees 1Chimpanzees （黑猩猩） will soon be extinct （灭绝）。 If the present rate of hunting and habitat （栖息地） destruction continues， th

16、en within 20 years， there will be no chimpanzees living in the wild. But this 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 A

17、llan Wilson discovered that the human and chimpanzee genomes （基因组） match by 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. A

18、s well as resembling us genetically， chimps are highly intelligent and able 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 m

19、edical research. Chimpanzees are so similar to humans that veterinarians （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 s

20、o interesting. 4For example， chimps seem to show a much higher resistance 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 ch

21、impanzee DNA sequence differs from that of humans， scientists hope to be able 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

22、 treatments could include the production of new drugs or even the alteration （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 1 24Paragraph 2 25Paragraph 3 26Paragraph 4 AReasons for HIV

23、 resistance BImplications of chimpanzee extinction for humans CEffective AIDS treatment DGenetic similarities between chimps and humans EChimps resistance to HIV FGenetic differences between chimps and humans 27Chimpanzee extinction may affect 28There is a difference ofless than 2% between the chimp

24、 and 29Scientists suspect that genes.PlaY a significant role in protecting chimps from getting 30The discovery of the genetic code of chimps will be helpful to Asome human disease treatments Bsome diseases Chuman survival Dhuman genomes Ekey areas Fhealthier lifestyle 第4部分：阅读理解（第3145题，每题3分，共45分） 下面有

25、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 plan

26、et which had temperatures somewhere within this narrow range. The earths supply of water 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 kilomete

27、rs. Most of it is in the form of the salt water of the oceans - about 97 per cent. The rest is 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 cen

28、t of the whole， there is 10-20 times as much stored underground water as there is actually 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 whol

29、e water circulation （循环） of the biosphere has to pass. Water evaporated （蒸发） from the surface 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 mo

30、re intensive evaporation per unit area over the sea and oceans than over the land， but 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 exists Ain the center of the earth. Bon the surface of

31、our planet. Cin a very narrow range of temperatures. Din the coastal areas of the earth. 32The total quantity of water on Earth Aremains almost unchanged. Bhas greatly increased in recent years. Cis decreasing constantly. Dis affected by global warming. 33Most of the fresh water on Earth Ais stored

32、underground. Bis in the form of ice at the Poles and on mountains. Cis found in rivers and lakes. Dcomes from the rain. 34The word “fraction” in the second paragraph means Aa very small amount. Ba large area. Can important system. Da major source of information 35There is more of rainfall Aover the

33、mountains than over the rivers. Bover the rivers than over the mountains Cover the oceans than over the land. Dover the land than over the oceans. 第二篇 Mind-reading Machine A team of researchers in California has developed a way to predict what kinds of objects people are looking at by scanning （扫描）

34、whats happening in their brains. When you look at something， your eyes send a signal about that object 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 Res

35、onance Imaging） （功能性磁振造影） brain scans could generally match electrical activity in the brain to the basic 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 ox

36、ygen it will consume. The more active a region of the brain， the more active its neurons， and in turn， the 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 proc

37、ess information. An fMRI machine is a device that scans the brain and measures changes in blood flow to the 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 t

38、he brain at work when a person looks at different images， fMRI may help scientists determine specific patterns 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 pe

39、ople， animals， and fruits. The scientists used an fMRI machine to record the volunteers brain activity 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

40、a model to predict how the brain might respond to any image the eyes see. In a second test， the scientists 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 scan

41、s to the image. For example， if a scan in the second test showed the same pattern of brain activity 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

42、your eyes？ AThe magnetic system in the brain. BThe central part of the heart. COxygen-rich blood. DNeurons in the brain. 37The function of an fMRI machine is Ato show how neutrons take in oxygen-rich blood. Bto measure how dense the blood is in the brain. Cto record how much oxygen the brain consume

43、s. Dto identify which parts of the brain are processing information 38The expression “highlighting the areas of the brain at work in paragraph 5 means Agiving light to the parts of the brain that are processing information. Bmarking the parts of the brain that are processing information. Cputting th

44、e parts of the brain to work. Dpreventing the parts of the brain from working. 39The researchers experimented on Aanimals and objects. BfMRI machines. Ctwo volunteers. Dthousands of pictures. 40Which of the following can best replace the title of the passage？ ARecent Development in Science and Techn

45、ology. BYour Thoughts Can Be Scanned. CA Technological Dream. DAn Intelligent Robot. 第三篇 Youth Emancipation in Spain 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 countrys state-run Institute of Youth. To coax （劝诱） young people from their homes， the In