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1、江苏省南京市考研外语学校:_ 班级:_ 姓名:_ 考号:_一、单选题(3题)1.AdisruptedBinterferedCinterruptedDstopped2.AonBforCasDabout3.AturningBtuningCtuckingDtugging二、阅读理解(5题)4.5.(4145)Researchers have found that drugs used to treat human seizures can delay aging in worms by as much as 50 percent. The roundworms used for the study
2、are similar to humans in their molecular makeup, raising thepossibility that the drugs could also extend the life span of humans。“By finding a class of drugs that delays aging we have found a relationship between the function of the nervous system and aging that was not well understood, ” said Kerry
3、 Komfeld, a geneticist at the Washington University School of Medicine in St. Louis, Missouri. The findings are detailed this week in the journal Science。The discovery came out of the thesis work by one of Komfelds graduate students, Kimberley Evason. About four years ago, Evason began exposing grou
4、ps of the roundworm Caenorhabditis elegans to commercially available drugs to see if the drugs would delay aging or promote longevity。A. But Komfeld said scientists will not know about the applicability of the drugs in humans until a similar study is done on humans. “Whats very encouraging is that t
5、hese drugs were developed to treat humans, and they are well understood, because theyve been used for a long time, ” he said。B. Later the scientists discovered that two related anticonvulsant drugs also lengthened the lives of the worms-in the case of one drug, by almost 50 percent. “This was a big
6、surprise to use, Komfeld said. ”“We didnt think anticonvulsant drugs had any particular relationship to aging. That connection was completely unexpected. ”C. Roundworms are a poor subject for experiments, because they are not like humans, even though their molecules are similar. For example, they ha
7、ve no bones, nor do they show emotions, making it difficult to know how exactly human subjects would react to these drugs in large quantities. However, using the worms allows experiments to be conducted quickly, because they do not live for long。D. “Somehow the neural activity seems to regulate the
8、aging of all of the body the skin, musculature, and reproductive tract, ” Kornfeld said. “Somehow the nervous system coordinates the progress of all these tissues, evidently, though the life stages. But we dont know how it does that. ”E. The discovery may also shed light on the little-understood agi
9、ng process. Since the drugs act on the neuromuscular systems of both humans and worms, the findings hint at a link between neural activity and aging。F. Unlike vertebrates, the worms are ideal subjects for the study of aging because of their short life spans, which last only a couple of weeks in a la
10、boratory. The worm is well known in genetics, and the worms genome has been sequenced。G. Use of this drug has been permitted by law since 1998 and wider use is now expected as a result of the studies. “We can clearly link this drug with human aging, but we still need to find proof, says Kornfeld opt
11、imistically. ”6.7.8.三、1.Use of English(20题)9.(5)A.regularly B.commonly C.roughly D.uniquely10.(19)A.regardless B.despite C.exclusive D.because11. The standard of living of any country means the average persons share of the goods and services which the country produces. A countrys standard of living,
12、 (1)_, depends first and (2)_ on its capacity to produce wealth. Wealth in this sense is not money, for we do not live on money (3)_ on things that money can buy. Goods such as food and clothing, and services such as transport and (4)_ . A countrys capacity to produce wealth depends upon many factor
13、s, most of (5)_ have an effect on one another. Wealth depends (6)_ a great extent upon a countrys natural resources. Some regions of the world are well supplied with coal and minerals, and have a fertile soil and a (7)_ climate; other regions possess none of them.Next to natural resources (8)_ the a
14、bility to turn them to use. China is perhaps as well (9)_ as the USA in natural resources, but suffered for many years from civil and (10)_ wars, and (11)_ this and other reasons was (12)_ to develop her resources. (13)_ and stable political conditions, and (14)_ from foreign invasion, enable a coun
15、try to develop its natural resources peacefully and steadily, and to produce more wealth than another country equally well (15)_ by nature but less well ordered.A countrys standard of living does not only depend upon the wealth that is produced and consumed (16)_ its own borders, but also upon what is indirectly produced through international trade. (17)_, Britains wealth in foodstuffs and other agricultural products would be much less if she had to depend only on (18)_
