職稱英語理工類A真題及答案2015

1、2015職稱英語理工類A真題及答案第1部分：詞匯選項(xiàng)(第115題，每題1分，共15分)下面每個(gè)句子中均有1個(gè)詞或短語劃有底橫線，請為每處劃線部分確定1個(gè)意義最為接近的選項(xiàng)。1. I will not tolerate that sort of behavior in my class.A. control B. observe C. regulate D. accept2. She showed a natural aptitude for the work.A. sense B. talent C. flavor D. taste3. Most peo

2、ple find rejection hard to accept.A. excuse B. client C. refusal D. destiny4. The organization was bold enough to face the press.A. pleased B. powerful C. brave D. sensible5. They were locked in mortal combat.A. deadly B. open C. actual D. active6. We were attracted by

3、the lure of quick money.A. amount B. supply C. tempt D. sum7. The procedures were perceived as complex and less transparent.A. clear B. necessary C. special D. correct8. The Stock Exchange is in turmoil following a huge wave of selling.A. Service B. danger C. disorder D. thr

4、eat9. He believes that Europe must change or it will perish.A. survive B. last C. die D. move10. There was a simultaneous trial taking place in the next build.A. fair B. full C .coexisting D. public11. They promote assimilation of ethnic groups into the main-stream culture.A

5、. policy B. value C .equality D. integration12. A salesmans cardinal rule is to satisfy customers.A. principal B. official C. simple D. legal13. I must compliment you on your handling of a very difficult situationA. silence B. praise C .assure D. complain14. We lived for years in

6、 a perpetual state of fearA. emotional B. nervous C. terrible D. Continuous15. The starving children were a pathetic sight.A. common B. unexpected C. unforgettable D. pitiful第2部分：閱讀判斷(第1622題，每題l分，共7分)下面的短文后列出了7個(gè)句子，請根據(jù)短文的內(nèi)容對每個(gè)句子做出判斷：如果該句提供的是正確信息，請選擇A;如果該句提供的是錯(cuò)誤信息，請選擇B;如果該句的信息文中沒有提

7、及，請選擇C。Lack of Oxygen Delayed the Rise of Animals on EarthScientists have long speculated as to why animal species didnt flourish sooner, once sufficient oxygen covered the Earths surface. Animals began to prosper at the end of the Proterozoic period, about 800 million years ago but what about the b

8、illion-year stretch before that, when most researchers think there also was plenty of oxygen?Well, it seems the air wasnt so great then, after all.In a study published Oct. 31 in Science, Yale researcher Noah Planavsky and his colleagues found that oxygen levels during the “boring billion” period we

9、re only 0.1% of what they are today. In other words, Earths atmosphere couldnt have supported a diversity of creatures, no matter what genetic advancements were poised to occur.“There is no question that genetic and ecological innovation must ultimately be behind the rise of animals, but it is equal

10、ly unavoidable that animals need a certain level of oxygen,” said Planavsky, co-lead author of the research along with Christopher Reinhard of the Georgia Institute of Technology. “Were providing the first evidence that oxygen levels were low enough during this period to potentially prevent the rise

11、 of animals.”The scientists found their evidence by analyzing chromium (Cr) isotopes in ancient sediments from China, Australia, Canada, and the United States. Chromium is found in the Earths continental crust, and chromium oxidation is directly linked to the presence of free oxygen in the atmospher

12、e.Specifically, the team studied samples deposited in shallow, iron-rich ocean areas, near the shore. They compared their data with other samples taken from younger locales known to have higher levels of oxygen.Oxygens role in controlling the first appearance of animals has long vexed scientists. “W

13、e were missing the right approach until now,” Planavsky said. “Chromium gave us the proxy.” Previous estimates put the oxygen level at 40% of todays conditions during pre-animal times, leaving open the possibility that oxygen was already plentiful enough to support animal life.In the new study, the

14、researchers acknowledged that oxygen levels were “highly dynamic” in the early atmosphere, with the potential for occasional spikes. However, they said, “It seems clear that there is a first-order difference in the nature of Earth surface Cr cycling” before and after the rise of animals.“If we are r

15、ight, our results will really change how people view the origins of animals and other complex life, and their relationships to the co-evolving environment,” said co-author Tim Lyons of the University of California-Riverside. “This could be a game changer.”“Theres a lot of interest right now in a bro

16、ader discussion surrounding the role that environmental stability played in the evolution of complex life, and we think our results are a significant contribution to that,” Reinhard said.16. The study discovered the rise of animals occurred earlier than the Proterozoic period.A. Right B. Wrong C. No

17、t mentioned17. Many researchers believe the oxygen level was high during pre-animal times.A. Right B. Wrong C. Not mentioned18. The team was funded by several research institutes.A. Right B. Wrong C. Not mentioned19. Genetic advancements triggered the rise of animals.A. Right B. Wrong C. Not mention

18、ed20. The samples studied in the research were collected in ocean areas.A. Right B. Wrong C. Not mentioned21. The study revealed that chromium found in Earths continental crust remained stable before and after the rise of animals.A. Right B. Wrong C. Not mentioned22. Tim Lyons liked to play computer

19、 games in his spare time.A. Right B. Wrong C. Not mentioned第3部分：概括大意與完成句子(第2330題，每題1分，共8分)下面的短文后有2項(xiàng)測試任務(wù)：(1)第2326題要求從所給的6個(gè)選項(xiàng)中為第25段每段選擇1個(gè)最佳標(biāo)題;(2)第2730題要求從所給的6個(gè)選項(xiàng)中為每個(gè)句子確定1個(gè)最佳選項(xiàng)。First Image-recognition Software1. Dartmouth researchers and their colleagues have created an artificial intelligence software

20、 that uses photos to locate documents on the Internet with far greater accuracy than ever before.2. The new system, which was tested on photos and is now being applied to videos, shows for the first time that a machine learning algorithm (運(yùn)算法則) for image recognition and retrieval is accurate and eff

21、icient enough to improve large-scale document searches online. The system uses pixel (像素) data in images and potentially video rather than just text to locate documents. It learns to recognize the pixels associated with a search phrase by studying the results from text-based image search engines. Th

22、e knowledge gleaned (收集) from those results can then be applied to other photos without tags or captions (圖片說明), making for more accurate document search results.3. "Over the last 30 years," says Associate Professor Lorenzo Torresani, a co-author of the study, "the Web has evolved fro

23、m a small collection of mostly text documents to a modern, massive, fast-growing multimedia data set, where nearly every page includes multiple pictures or videos. When a person looks at a Web page, he immediately gets the gist (主旨) of it by looking at the pictures in it. Yet, surprisingly, all exis

24、ting popular search engines, such as Google or Bing, strip away the information contained in the photos and use exclusively the text of Web pages to perform the document retrieval. Our study is the first to show that modern machine vision systems are accurate and efficient enough to make effective u

25、se of the information contained in image pixels to improve document search."4. The researchers designed and tested a machine vision system a type of artificial intelligence that allows computers to learn without being explicitly programmed that extracts semantic (語義的) information from the pixel

26、s of photos in Web pages. This information is used to enrich the description of the HTML page used by search engines for document retrieval. The researchers tested their approach using more than 600 search queries (查詢)on a database of 50 million Web pages. They selected the text-retrieval search eng

27、ine with the best performance and modified it to make use of the additional semantic information extracted by their method from the pictures of the Web pages. They found that this produced a 30 percent improvement in precision over the original search engine purely based on text.23. Paragraph 1 _24.

28、 Paragraph 2 _25. Paragraph 3 _26. Paragraph 4 _A. Function of the new systemB. Improvement in document retrievalC. Publication of the new discoveryD. Problems of the existing search enginesE. Popularity of the new systemF. Artificial intelligence software created27. The new system does document ret

29、rieval by _.28. The new system is expected to improve precision in _.29. When performing document retrieval the existing search engines ignore _ _30. The new system was found more effective in document search than the _A. using photosB. description of the HTML pageC. current popular search enginesD.

30、 document searchE. information in imagesF. machine vision systems第4部分：閱讀理解(第3145題，每題3分，共45分)下面有3篇短文，每篇短文后有5道題。請根據(jù)短文內(nèi)容，為每題確定1個(gè)最佳選項(xiàng)。第一篇 Face Masks May Not Protect from Super-FluIF a super-flu strikes, face masks may not protect you. Whether widespread use of masks will help, or harm, during the next w

31、orldwide flu outbreak is a question that researchers are studying furiously. No results have come from their mask research yet. However, the government says people should consider wearing them in certain situations anyway, just in case.But its a question the public keeps asking while the government

32、are making preparations for the next flu pandemic. So the Centers for Disease Control and Prevention (CDC) came up with preliminary guidelines. “We dont want people wearing them everywhere,” said the CDC. “The overall recommendation really is to avoid exposure.”When thats not possible, the guideline

33、s say to consider wearing a simple surgical mask if you are in one of the three following situations. First, youre healthy and cant avoid going to a crowded place. Second t youre sick and think you may have close contact with the healthy, such as a family member checking on you. Third, you live with

34、 someone whos sick and thus might be in the early stages of infection, but still need to go out.Influenza pandemics can strike when the easy-to-mutate flu virus shifts to a strain that people never have experienced. Scientists cannot predict when the next pandemic will arrive, although concern is ri

35、sing that the Asian bird flu might trigger one if it starts spreading easily from person to person.During the flu pandemic, you should protect yourself. Avoid crowds, and avoid close contact with the sick unless you must care for someone. Why arent masks added to this self-protection list? Because t

36、hey can help trap virus-laden droplets flying through the air with a cough or sneeze. Simple surgical masks only filter the larger droplets. Besides, the CDC is afraid masks may create a false sense of security. Perhaps someone who should have stayed home would don an ill-fitting mask and hop on the

37、 subway instead.Nor does flu only spread through the air. Say someone covers a sneeze with his or her hand, then touches a doorknob or subway pole. If you touch that spot next and then put germy hands on your nose or mouth, youve been exposed. Its harder to rub your nose while wearing a mask and so

38、your face may get pretty sweaty under masks. You reach under to wipe that sweat, and may transfer germs caught on the outside of the mask straight to the nose. These are the problems face masks may create for their users.Whether people should or should not use face masks still remains a question. Th

39、e general public has to wait patiently for the results of the mask research scientists are still doing.31. What is the passage mainly about?A. Widespread use of face masks. B. Possibility of a worldwide flu outbreakC. New discoveries of a face mask research. D. Effectiveness of wearing face masks32.

40、 The CDC suggests that peopleA. stay alone when being sick. B. wear face masks when going to a crowded place.C. wear face masks wherever possible. D. remain at home if living with someone whos sick.33. The word "that" in Paragraph 3 refers toA. making preparations. B. avoiding exposureC. c

41、oming up with guidelines. D. wearing face masks everywhere.34. Which of the following statements is true?A. Scientists warn the next flu is coming soon.B. Asian bird flu is spreading easily from person to person.C. Masks protect people because they keep viruses away.D. Masks are not effective if a f

42、lu strikes.35. One of the concerns the CDC has is thatA .masks may give people a wrong assumption of being safe.B. the sick may not wear masks and go out.C. flu virus may spread via public transportation.D. healthy people may not know how to protect themselves.第二篇 Whats killing the BatsFirst it was

43、bees. Now it is bats. Biologists in America are working hard to discover the cause of the mysterious deaths of tens of thousands of bats in the northeastern part of the country. Most of the bats affected are the common little brown bats (Myotis lucifugus,) but other species, such as the long-eared b

44、at, the small-footed hat, the eastern pipistrelle, and the Indiana bat have also been affected. In some caves, more than 90 percent of the bat populations have died.One possibility is disease. A white fungus (真菌)known as fusarium has been found on the noses of both living and dead bats. However, sci

45、entists don't know If the fungus is the primary cause of death, a secondary cause of death, or not a cause at all, but the result of some other conditions.Another possible cause is a lack of food. For example, bats typically eat a large number of moths (蛾), and in some states such as New York, t

46、he number of moths has been declining in recent years. If bats cant eat enough food, they starve to death.Still other scientists believe that global warming is to blame. Warmer temperatures in recent years have been waking up hibernating (冬眠)bats earlier than usual. If bats break their hibernation a

47、t the wrong time, they might not find their expected food sources. The weather might also turn cold again and weaken or kill the bats.Scientists might not agree on the causes of the bat die-off, but they do agree on the consequences. Bats are an important predator of mosquitoes; a single brown bat c

48、an eat 1,000 or more insects in an hour. They also eat beetles and other insects that damage plant crops. If there aren't enough bats, damage will be great from the insects they eat While bats live a long time for their size 一 the little brown bat can live for more than 30 years 一 a female bat h

49、as only one baby per year, so bat populations grow slowly. Many bat species in the United States are already protected or endangered.How can you help? Do not disturb sleeping or nesting bats. If you discover bate that seem to be sick or that are dead, contact your local Fish& Wildlife Department

50、 with the details. However, be careful not to touch the animals.36. What is the main idea of this passage?A. All species of bats in North America are dying.B. Scientists already know the cause of the deaths of batsC. The bat deaths are a serious problem.D. There are many possible causes of the death

51、s of bats.37. What does the first sentence in Paragraph 1 mean?A. Bees have been dying mysteriously.B. The first article on the website is about bees.C. Bees usually die before bats.D. It was bees that caused the deaths of bats.38. The word “pipistrelle" in Paragraph 1 refers toA. a kind of fun

52、gus. B. an area in the U.S. C. a special cave. D. a kind of bat.39. The "moths" in Paragraph 3 are taken as an example ofA. diseases that kill bats. B. Insects that bats eat.C. animals that have diseases. D. bat species that are starving to death.40. What is the purpose of the last paragra

53、ph?A. To get people to stop killing bats. B. To hire workers for the Fish & Wildlife Department.C. To ask people not to touch dead bats. D. To tell the public how to help bats.第三篇 Better Solar Energy Systems: More Heat, More LightSolar photovoltaic thermal energy systems, or PVTs, generate both

54、heat and electricity, but until now they havent been very good at the heat-generating part compared to a stand-alone solar thermal collector. Thats because they operate at low temperatures to cool crystalline silicon solar cells, which lets the silicon generate more electricity but isnt a very effic

55、ient way to gather heat.Thats a problem of economics. Good solar hot-water systems can harvest much more energy than a solar-electric system at a substantially lower cost. And its also a space problem： photovoltaic cells can take up all the space on the roof, leaving little room for thermal applicat

56、ions.In a pair of studies, Joshua Pearce, an associate professor of materials science and engineering, has devised a solution in the form of a better PVT made with a different kind of silicon. His research collaborators are Kunal Girotra from ThinSilicon in California and Michael Pathak and Stephen

57、Harrison from Queens University, Canada.Most solar panels are made with crystalline silicon， but you can also make solar cells out of amorphous silicon, commonly known as thin-film silicon. They dont create as much electricity, but they are lighter, flexible, and cheaper. And, because they require m

58、uch less silicon, they have a greener footprint. Unfortunately，thin-film silicon solar cells are vulnerable to some bad-news physics in the form of the Staebler-Wronski effect.“That means that their efficiency drops when you expose them to light pretty much the worst possible effect for a solar cell,” Pearce explains，which is one of the reasons thin-film solar panels make up only a small fraction of the market.Howev