2021年青海职称英语考试真题卷（3）.docx

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1、2021年青海职称英语考试真题卷（3）本卷共分为1大题50小题，作答时间为180分钟，总分100分，60分及格。一、单项选择题（共50题，每题2分。每题的备选项中，只有一个最符合题意） 1.Exercise 2.The Sea 3.Exercise 4.Exercise 5.Exercise 6.Exercise 7.Exercise 8.Exercise 9.Exercise 10.Exercise 11.Exercise 12.Exercise 13. 下面的短文后列出7个句子请根据短文的内容对每个句子做出判断：如果泫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

2、的信息文中没有提及请选择C。 BEasy Learning/B Students should be jealous. Not only do babies get to doze their days away, but theyve also mastered the fine art of learning in their sleep. By the time babies are a year old. They can recognize a lot of sounds and even simple words. Marie Cheour at the University of

3、 Turku in Finland suspected that they might progress this fast because they learn language while they sleep as well as when they are awake. To test the theory, Cheour and their colleagues studied 45 newborn babies in the first days of their lives. They exposed all the infants to an hour of Finnish v

4、owel sounds one that sounds like oo, another like ee and a third boundary vowel peculiar to Finnish and similar languages that sounds like something in between. EEG (脑电图) recording of the infants brains before and after the session showed that the newborns could not distinguish the sounds. Fifteen o

5、f the babies then went back with their mothers, while the rest were split into two sleep-study groups. One group was exposed throughout their night-time sleeping hours to the same three vowels, while the others listened to the other, easier-to-distinguish vowel sounds. When tested in the morning, an

6、d again in the evening, the babies whod heard the tricky boundary vowels all night showed brainwave activity indicating that they could now recognize this sound. They could identify the sound even when its pitch was changed, while none of the other babies could pick up the boundary vowel at all. Che

7、our doesnt know how babies accomplish this nighttime learning, but she suspects that the special ability might indicate that unlike adults, babies dont turn off their cerebral cortex(大脑皮层)while they sleep. The skill probably fades in the course of the first years of life, she adds. So forget the ide

8、a that you can pick up the tricky French vowels as an adult just by slipping a language tape under your pillow. But while it may not help grown-ups, Cheour is hoping to use the sleeping hours to give remedial help to babies who are genetically at risk of language disorders.Babies can learn even in t

9、heir sleep. AA. RightBB. WrongCC. Not mentioned 14. 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。 B第一篇/B B Population Densities/B The average population density (密度) of the World is47 persons per square mile. Continental densities range from no permanent inhabitants in Antarctica to 211 per square mile in

10、Europe. In the western hemisphere, population densities range from about 4 per square mile in Canada to 675 per square mile in Puerto Rico. In Europe the range is from 4 per square mile in Iceland to 831 per square mile in the Netherlands. Within countries there are wide variations of population den

11、sities. For example, in Egypt, the average is 55 persons per square mile, but 1,300 person inhabit each square mile in settled portions where the land is arable (适合耕种的). High population densities generally occur in regions of developed industrialization, such as the Netherlands, Belgium, and Great B

12、ritain, or where lands are intensively used for agriculture, as in Puerto Rico and Java. Low average population densities are characteristic of most Underdeveloped countries. Low density of population is generally associated with a relatively low percentage of cultivated land. This generally results

13、 from poor quality lands. It may also be due to natural obstacles to cultivation, such as deserts, mountains, or malaria-infested (疟疾横行) jungles; to land uses other than cultivation, as pasture and forested land; to primitive methods that limit cultivation; to social obstacles More economically adva

14、nced countries of low population density have, as a rule, large proportions of their populations living :in urban areas. Their rural population densities are usually very low. Poorly developed countries of correspondingly low population density, on the other hand, often have a concentration of rural

15、 population living on arable land, which is as great as the rural concentration found in the most densely populated industrial countries.Which of the following area has the highest average population density AIceland.BCanada.CPuerto Rico.DNetherlands. 15. 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2 段名其中4段

16、选择1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。 BScreen Test/B 1. Every year millions of women are screened with X-rays to pick up signs of breast cancer. If this happens early enough, the disease can often be. treated successfully. According to a survey published last year, 21 countries have screening

17、programmes. Nine of them, including Australia, Canada, the US and Spain, screen women under 50.2. But the medical benefits of screening these younger women are controversial, partly because the radiation brings a small risk of inducing cancer. Also, younger women must be given higher doses of X-rays

18、 because their breast tissue is denser.3. Researchers at the Polytechnic University of Valencia analysed the effect of screening more than 160,000 women at 11 local clinics. After estimating the womens cumulative dose of radiation, they used two models to calculate the number of extra cancers this w

19、ould cause.4. The mathematical model recommended by Britains National Radiological Protection Board (NRPB) predicted that the screening programme would cause 36 cancers per 100,000 women, 18 of them fatal. The model preferred by the UN Scientific Committee on the Effects of Atomic Radiation led to a

20、 lower figure of 20 cancers.5. The researchers argue that the level of radiation-induced cancers is not very significant compared to the far larger number of cancers that are discovered and treated. The Valencia programme, they say, detects between 300 and 450 cases of breast cancer in every 100,000

21、 women screened.6. But they point out that the risk of women contracting cancer from radiation could be reduced by between 40 and 80 percent if screening began at 50 instead of 45, because they would be exposed to less radiation. The results of their study, they suggest, could help optimise the tech

22、nique for breast cancer screening.7. There is a trade-off between the diagnostic benefits of breast screening and its risks, admits Michael Clark of the NRPB. But he warns that the study should be interpreted with caution. On the basis of the current data, for every 10 cancers successfully detected

23、and prevented there is a risk of causing one later in life. Thats why radiation exposure should be minimized in any screening programme.Paragraph 2_ARisk of Screening to Younger WomenBInvestigating the Effect of ScreeningCEffects Predicted by Two Different ModelsDTreatment of CancersEMinimizing of R

24、adiation Exposure F. Factors That Trigger Cancers 16.B第二篇/B B Egypt Felled by Famine/B Even ancient Egypts mighty pyramid builders were powerless in the face of the famine that helped bring down their civilian around 2180 BC. Now evidence gleaned from mud deposited by the River Nile suggests that a

25、shift in climate thousands of kilometers to the south was ultimately to blem and the same or worse could happen today. The ancient Egyptians depended on the Niles annual floods to irrigate their crops. But any change in climate that pushed the African monsoons southwards out of Ethiopia would have d

26、iminished these floods. Dwindling rains in the Ethiopian highlands would have meant fewer plants to stablise the soil. When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt, along with sediment from the White Nile. The Blue Nile mud has a different isotope s

27、ignature from that of the White Nile. So by analyzing isotope differences in mud deposited in the Nile Delta, Michael Krom of Leeds University worked out what proportion of sediment came from each branch of the river. Krom reasons that during periods of drought, the amount of the Blue Nile mud in th

28、e river would be relatively high. He found that one of these periods, from 4,500 to 4,200 years ago, immediately predates the fall of the Egypts Old Kingdom. The weakened waters would have been Catastrophic for the Egyptians. Changes that affect food supply dont have to be very large to have a rippl

29、e effect in societies, says Bill Ryan of the Lamont Doherty Earth Observatory in New York. Similar events today could be even more devastating, says team member Daniel Stanley, a geoarchaeologist from the Smithsonian Institution in Washington, D. C: Anything humans do to shift the climate belts woul

30、d have an even worse effect along the Nile system because the populations have increased dramatically Why does the author mention pyramid buildersABecause they once worked miracles.BBecause they were well-built.CBecause they were actually very weak.DBecause even they were unable to rescue their civi

31、lization. 17.B第三篇/B B Sunbath and Skin Cancer/B In the summer, millions of Americans will offer up their bodies to the sun rays. A tan indicates health and beauty, and most sun worshippers will sacrifice a lot to achieve it, including themselves. With each hour, the suns ultraviolet (紫外线的) radiation

32、 produces irreversible (不可逆的) damage, hastening the development of unsightly wrinkles. And with each year on the beach or rooftop, the sunbather increases his risk of getting skin cancer. Skin cancer is by far the most common form of cancer. An estimated 400,000 new cases will be detected this year

33、in the United States, and almost all of them can be blamed on over-exposure to the sun. Fortunately ,most of these cancers are highly curable. But they can be disfiguring and take time to treat. For that reason, sun worshippers should treat deity with a good deal of awe(敬畏). Sunburn, of course, is t

34、he initial hazard posed by UV radiation. Prolonged exposure to UV, however, interferes with the production of collagen fibers in the dermis (真皮层), causing the skin to lose elasticity (弹性) and creating premature wrinkles. Further deterioration (恶化) of the dermis deprives the epidermis (表皮层)of nutriti

35、on and causes it to become thin and dry. Cancer is UVs final result. Shortwave radiant energy, especially from the UV-B band, breaks the strands of DNA. Enzymes (酶) work constantly to rearrange the (变异的) DNA into proper sequence, but with repeated UV exposure, the repair process may eventually break

36、 down. Then the mutant DNA may produce a colony of cancer cells. But skin cancer may be avoided with a good dose of common sense. People with fair skin and blue eyes who burn easily stand the highest risk. Special danger spots are the parts of the body most constantly exposed to the sun, such as the

37、 cheeks, nose, lower lip and the ears. People who have already developed precancerous (癌变前的) lesions (伤害) or had one skin-cancer growth stand a greatly increased chance of developing others. Dermatologists (皮肤科医生) recommend avoiding the sun when it is most intense between 11 a.m. and 3 p. m. Anyone

38、who insists on sunbathing should use a good sun screen. These lotions and salves contain chemicals that block out the burning UV-B radiation while permitting the tanning rays to reach the skin.Which of the following is the result, if a sunbather stays on the beach for a long time AThe skin cancer.BT

39、he wrinkles that cannot be seen.CAll kinds of sacrifices.DHealthful beauty. 18. 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2段名其中4段选择1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。 Screen Test 1. Every year millions of women are screened with X-rays to pick up signs of breast cancer. If this happens early enough,

40、 the disease can often be. treated successfully. According to a survey published last year, 21 countries have screening programmes. Nine of them, including Australia, Canada, the US and Spain, screen women under 50.2. But the medical benefits of screening these younger women are controversial, partl

41、y because the radiation brings a small risk of inducing cancer. Also, younger women must be given higher doses of X-rays because their breast tissue is denser.3. Researchers at the Polytechnic University of Valencia analysed the effect of screening more than 160,000 women at 11 local clinics. After

42、estimating the womens cumulative dose of radiation, they used two models to calculate the number of extra cancers this would cause.4. The mathematical model recommended by Britains National Radiological Protection Board (NRPB) predicted that the screening programme would cause 36 cancers per 100,000

43、 women, 18 of them fatal. The model preferred by the UN Scientific Committee on the Effects of Atomic Radiation led to a lower figure of 20 cancers.5. The researchers argue that the level of radiation-induced cancers is not very significant compared to the far larger number of cancers that are disco

44、vered and treated. The Valencia programme, they say, detects between 300 and 450 cases of breast cancer in every 100,000 women screened.6. But they point out that the risk of women contracting cancer from radiation could be reduced by between 40 and 80 percent if screening began at 50 instead of 45,

45、 because they would be exposed to less radiation. The results of their study, they suggest, could help optimise the technique for breast cancer screening.7. There is a trade-off between the diagnostic benefits of breast screening and its risks, admits Michael Clark of the NRPB. But he warns that the

46、 study should be interpreted with caution. On the basis of the current data, for every 10 cancers successfully detected and prevented there is a risk of causing one later in life. Thats why radiation exposure should be minimized in any screening programme.Paragraph 3_ 19.B第二篇/B B Egypt Felled by Fam

47、ine/B Even ancient Egypts mighty pyramid builders were powerless in the face of the famine that helped bring down their civilian around 2180 BC. Now evidence gleaned from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blem and the same or worse could happen today. The ancient Egyptians depended on the Niles annual floods to irrig