31、根据以下内容回答31-50题：

　　American society is not nap friendly."In fact, "says David Dinges, a sleep specialist at the University of Pennsylvania School of Medicine, "there’S even a prohibition against admitting we need sleep."Nobody wants to be caught napping or found asleep at work.To quote a proverb："Some sleep five hours, nature requires seven, laziness nine and wickedness eleven."

　　"Wrong.The way not to fall asleep at work is to take naps when you need them.We have to totally change onr attitude toward napping."says Dr.William Dement of Stanford University, the god-father of sleep research.

　　Last year a national commission led by Dement identified an"American sleep debt"which one member said was as important as the national debt.The commission was concerned about the danger, of sleepiness：people causing industrial accident or falling asleep while driving.This may be why we have a new sleep policy in the White House.According to recent reports, president Clinton is trying to take a half-hour snooze(打瞌睡)every afternoon.

　　About 60 percent of American adults nap when given the opportunity.We seem to have"a mid-afternoon quiet phase"(also called"a secondary sleep gate").Sleeping 15 minutes to two hours in the early afternoon can reduce stress and make US refreshed.Clearly, we were born to nap.

　　We, Superstars of Snooze, don’t nap to replace the lost shut-eye or to prepare for a night shift.Rather, we"snack"on sleep, whenever, wherever and at whatever time we feellike it.I myself have napped in buses, ears, planes and on boats;on floors and beds;and in libraries, Offices and museums.

　　It is commonly accepted in American society that too much sleep is__________ .

　　A.unreasonable

　　B.criminal

　　C.harmful

　　D.costly

　　32、The research done by the Dement commission shows that Americans__________ .

　　A.don’t like to take naps

　　B.are terribly worried about their national debt

　　C.sleep less than is good for them

　　D.have caused many industrial and traffic accidents

　　33、The purpose of this article is to__________ .

　　A.warn us of the wickedness of napping

　　B.explain the danger of sleepiness

　　C.discuss the side effects of napping

　　D.convince the reader of the necessity of napping

　　34、The"American sleep debt"(Line l, Para.3)iS the result of __________.

　　A.the traditional misconception the Americans have about sleep

　　B.the new sleep policy of the Clinton Administration

　　C.the rapid development of American industry

　　D.the Americans’worry about the danger of sleepiness

　　35、The second sentence of the last paragraph tells US that it is__________ .

　　A.preferable to have a sound sleep before a night shift

　　B.good practice to eat something light before we go to bed

　　C.essential to make up for cost sleep

　　D.natural to take a nap whenever we feel the need for it

　　答案：ACADCACDAD

　　Part Ⅲ Vocabulary and Structure(20 points).

　　Directions：There are 30 incomplete sentences in this part.For each sentence there are four choices marked A,B,CandD.Choose the answer that best completes the sentence.Then mark the correspondingletter on the Answer Sheet with a single through the center.

　　36、Please__________me whether I should accept the offer.

　　A.advise

　　B.suggest

　　C.propose

　　D.direct

　　37、__________ faculty member at a university，one has to have a doctorate degree.

　　A.To become

　　B.Become

　　C.One becomes

　　D.One becoming

　　38、You are__________to have had the help of such a man.

　　A.thoughtful

　　B.considerate

　　C.fortunate

　　D.moderate

　　39、Our hopes__________ and fell in the same instant.

　　A.aroused

　　B.arose

　　C.raised

　　D.rose

　　40、Sometimes we are asked__________ we think the likely result of an action will be.

　　A.that

　　B.whether

　　C.what

　　D.which

　　41、We moved to the front rowwe codld hear and see better.

　　A.SO

　　B.such

　　C.SO that

　　D.such that

　　42、The house is empty__________the keeper.

　　A.except for

　　B.but

　　C.except

　　D.besides

　　43、The main __________ of Southern California are climate and the scenery.

　　A.natures

　　B.features

　　C.character

　　D.temper

　　44、I'm sure he is up to the job__________ he would give his mind to it.

　　A.if only

　　B.in case

　　C.until

　　D.unless

　　45、He__________ the students a few books to read.

　　A.arranged

　　B.managed

　　C.assigned

　　D.appointed

　　答案：AACDCCABAC

　　46、TheY decided to chase the cow away__________ it did more damage.

　　A.unless

　　B.until

　　C.before

　　D.Mthough

　　47、I don’t think it is any use__________ this matter any further.

　　A.discussing

　　B.to discuss

　　C.to discussing

　　D.to be discussed

　　48、John likes Chinese food，bm he__________ .eating with chopsticks.

　　A.doesn’t used to

　　B.does.n’t use to

　　C.isn’t used to

　　D.used not to

　　49、Is there any__________ medicine to cure that patient of his illness?

　　A.efficient

　　B.effective

　　C.attractive

　　D.enjoyable

　　50、The results are reliable since the tests have been carried out by a__________doctor.

　　A.quMified

　　B.sufficient

　　C.desperate

　　D.adequate

　　51、We use plastics__________ wood and metal now.

　　A.to take place

　　B.to take over

　　C.take the place of

　　D.in place of

　　52、It is wise to have some money__________for old age.

　　A.put away

　　B.kept away

　　C.laid down

　　D.given away

　　53、She__________ her trip to Singapore because she was ill.

　　A.called off

　　B.closed down

　　C.put up

　　D.went off

　　54、__________ plastics，the washing machine is light in weight.

　　A.Made of

　　B.Making of

　　C.To make of

　　D.To be made of

　　55、Our English teacher had.US__________ compositions every Friday·

　　A.to write

　　B.written

　　C.write

　　D.wrote

　　答案：CACBADAAAC