1999年6月大学英语六级考试试题(3)

　　Questions 26 to 30 are based on the following passage:

　　There s a simple premise behind what Larry Myers does foraliving: If you can smell it, you can find it.

　　Myers is the founder of Auburn University s InstituteforBiological Detection Systems, the main task of which is tochasethe ultimate in detection devices - an artificial nose.

　　For now, the subject of their research is little more than astackof gleaming chips tucked away in a laboratory drawer. Butsoon, sucha tool could be hanging from the belts of police, arson(纵火)investigators and food-safety inspectors.

　　The technology that they are working on would suggestquitereasonably that, within three to five years, we ll havesomeworkable sensors ready to use. Such devices might find wide useinplaces that attract terrorists. Police could detect drugs,bodiesand bombs hidden in cars, while food inspectors could easilytestfood and water for contamination.

　　The implications for revolutionary advances in public safetyandthe food industry are astonishing. But so, too, arethepossibilities for abuse: Such machines could determine whetherawoman is ovulating (排卵), without a physical exam - or evenherknowledge.

　　One of the traditional protectors of American liberty is thatithas been impossible to search everyone. That s getting not tobethe case.

　　Artificial biosensors created at Auburn work totallydifferentlyfrom anything ever seen before. AromaScan, for example,is adesktop machine based on a bank of chips sensitive tospecificchemicals that evaporate into the air. As air is suckedinto themachine, chemicals pass over the sensor surfaces andproducechanges in the electrical current flowing through them.Thosecurrent changes are logged into a computer that sorts outodorsbased on their electrical signatures.

　　Myers says they expect to load a single fingernail-size chipwiththousands of odor receptors (感受器), enough to create a sensorthat snearly as sensitive as a dog s nose.

　　26. Which of the following is within the capacity oftheartificial nose being developed? A) Performingphysicalexaminations.

　　B) Locating places which attract terrorists.

　　C) Detecting drugs and water contamination.

　　D) Monitoring food processing.

　　27. A potential problem which might be caused by the use ofanartificial nose is .

　　A) negligence of public safety C) a hazard to physical health

　　B) an abuse of personal freedom D) a threat toindividualprivacy

　　28. The word logged (Line 5, . 7) most probably means.

　　A) preset C) processed

　　B) entered D) simulated

　　29. To produce artificial noses for practical use, it isessential.

　　A) to develop microchips with thousands of odor receptors

　　B) to invent chips sensitive to various chemicals

　　C) to design a computer program to sort out smells

　　D) to find chemicals that can alter the electrical currentpassingthrough

　　30. The author s attitude towards Larry Myers work is .

　　A) cautious C) suspicious

　　B) approving D) overenthusiasticPart III Vocabulary(20minutes)Directions:

　　There are 30 incomplete sentences in this part. For eachsentencethere are four choices marked A), B), C) and D). Choose theONEthat best completes the sentence. Then mark thecorrespondingletter on the Answer Sheet with a single line throughthecentre.

　　31. When people are asked what kind of housing they need orwant,the question a variety of answers.

　　A) defies C) mediates

　　B) magnifies D) evokes

　　32. If you want to set up a company, you must with theregulationslaid down by the authorities.

　　A) comply C) confirm

　　B) adhere D) accord

　　33. Although there are occasional outbreaks of gunfire, wecanreport that the rebellion has in the main been .

　　A) canceled C) suppressed

　　B) destroyed D) restrained

　　34. Since the two countries couldn t their differences,theydecided to stop their negotiations.

　　A) rectify C) reconcile

　　B) oblige D) obscure

　　35. The presidential candidate his position by winningseveralprimary elections.

　　A) enforced C) intensified

　　B) enriched D) consolidated

　　36. The fuel of the continental missile is supposed to be bythisdevice.

　　A) ignited C) fired

　　B) lighted D) inspired

　　37. Mike just discovered that his passport had threemonthsago.

　　A) abolished C) amended

　　B) expired D) constrained

　　38. Frankly speaking, your article is very good except forsomemistakes in grammar.

　　A) obscure C) trivial

　　B) glaring D) rare

　　39. There was once an idea that the earth was flatandmotionless.

　　A) absurd C) eternal

　　B) intrinsic D) offensive

　　40. Certain species disappeared or became as new forms arosethatwere better adapted to the Earth s changing environment.

　　A) feeble C) massive

　　B) extinct D) extinguished

　　41. His directions confused us; we did not know which of thetworoads to take.

　　A) ambiguous C) arbitrary

　　B) complicated D) intricate

　　42. Franklin D. Roosevelt argued that the depression stemmedfromthe American economy s flaws.

　　A) underlining C) vulgar

　　B) vulnerable D) underlying

　　43. Some studies confirmed that this kind of eye disease wasintropical countries.

　　A) prospective C) provocative

　　B) prevalent D) perpetual

　　44. I am afraid that you have to alter your views in light ofthetragic news that has just arrived.

　　A) indifferent C) optimistic

　　B) distressing D) pessimistic

　　45. Although he has had no formal education, he is one ofthebusinessmen in the company. A) shrewdest C) nastiest

　　B) sternest D) alertest

　　46. Stop shouting! I can t hear the football .

　　A) judgement C) commentary

　　B) interpretation D) explanation

　　47. The cultures of China and Japan have shared many features,buteach has used them according to its national .

　　A) engagement C) capacity

　　B) destiny D) temperament

　　48. Every mr of society has to make a to struggle for thefreedomof the country. A) pledge C) resolve B) warranty D)guarantee

　　49. I was deeply impressed by the hostess and enjoyed thedinnerparty very much.

　　A) hostility C) hospitality

　　B) indignation D) humanity

　　50. David tends to feel useless and unwanted in a societythatgives so much to those who compete well.

　　A) prestige C) superiority

　　B) regime D) legislation

　　51. As you have seen, the value of a nation s currency is a ofitseconomy.

　　A) reaction C) response

　　B) reflection D) revelation

　　52. In the Spring Export Commodities Fair the of finechinaattracted much attention of customers from all over the world.A)succession C) string B) array D) procession

　　53. We should make a clear between the two scientific termsforthe purpose of our discussion.

　　A) setion C) deviation

　　B) discrimination D) distinction

　　54. The terrorists might have planted a bomb on a plane inAthens,set to when it arrived in New York.

　　A) go off C) come off

　　B) get off D) carry off

　　55. We should be able to do the job for you quickly, you giveusall the necessary information.

　　A) in case C) or else

　　B) provided that D) as if

　　56. The younger person s attraction to stereos cannot beexplainedonly familiarity with technology.

　　A) in quest of C) in terms of

　　B) by means of D) by virtue of

　　57. Attempts to persuade her to stay after she felt insultedwere.

　　A) in no way C) at a loss

　　B) on the contrary D) of no avail

　　58. By signing the lease we made a to pay a rent of $150aweek.

　　A) conception C) commitment

　　B) commission D) confinement

　　59. To prevent flooding in winter the water flowing from thedamis constantly by a computer.

　　A) graded C) conducted

　　B) managed D) monitored

　　60. Many people think of deserts as regions, but numerousspeciesof plants and animals have adapted to life there.

　　A) virgin C) void

　　B) barren D) wretched【1】 【2】 【3】 【4】