安徽工程大学《大学英语四》(重修)练习五

《大学英语四》（重修）练习五Part I.Reading ComprehensionDirections:There are two passages in this part.Each passage is followed by5questions,with four choices given for each question.Please decide on the best choice.Passage1On October12,1989,some Chinese scientists were working at the computers to look for the information they needed.Suddenly they saw a lot of very bright spots crossing the computer’s screens.At the same moment the computers were working much slower.To find out what was happening they stopped their work to look over some parts of the computers.To their surprise, they found out that most of their stored information was got rid of by computer viruses(病毒)!It’s clear that all these computers had been infected(传染)by computer viruses.It is said that the computer viruses were made by a group of young men interested in playing tricks.They all had a lot of computer knowledge.They made the viruses just to show their cleverness.This kind of computer viruses is named Jerusalem Viruses.These viruses can stay in computer for a long time.When the time comes they will hit the computers by lowering the functions,breaking their usual programs or even getting rid of all the information.We now come to know that Jerusalem Viruses often hit computers on Friday and that they are visiting a lot of computers.Among the countries that had computer viruses last year are Britain, Australia,Switzerland and the US.But till now,how to get rid of the terrible viruses is still a problem.1.On October12,1989,some Chinese scientists operated the computers to_____.A.repair some parts of themB.get rid of the very bright spotsC.look for Jerusalem VirusesD.look for what they wanted2.The group of young men made the viruses to.A.break all the computersB.tell people they hated computersC.show they were cleverD.get more knowledge about computers3.Which of the following is the most serious result by the viruses?A.The computer’s functions are lowered.B.The usual programs are got rid of.C.Some parts of the computer are broken.D.All the information in the computer is missing.4.When a computer is infected with the viruses,it will.A.stop workingB.no longer be usefulC.not work as usualD.not keep the information for long5.According to the passage,computer viruses seem to be.A.in any computerB.difficult to get rid ofC.easy to makeD.on computer’s screensPassage2If you are like most people,your intelligence various from season.You are probably a lot sharper in the spring than you are at any other time of year.A noted scientist,Ellsworth Huntington(1876-1947),concluded from other men’s work and his own among the people in different climates that climate and temperature have a definite effect on our mental abilities.He found that cool weather is much more favorable for creative thinking than in summer heat. This does not mean that all people are less intelligent in summer than they are during the rest of the year.It does mean,however,that the mental abilities of large numbers of people tend to be lowest in summer.Spring appears to be the best period of the year for thinking.One reason may be that in the spring man’s mental abilities are affected by the same factors that bring about great changes in all nature.Fall is the next–best season,then winter.As for summer,it seems to be a good time to take a long vacation from thinking.1.According to the passage,man’s intelligence_______.A.stays the same throughout the year.B.various from day to day.C.changes with seasonsD.changes from year to year.2.Ellsworth Huntington decides that climate and temperature have_______.A.a great effect on everyone’s intelligence.B.some effect on most people’s intelligence.C.some effect on a few people’s intelligence.D.no effect on most people’s intelligence.3.Ellsworth Huntington’s conclusion was based on______A.variations of his own mental abilities from season to season.B.the results of research done by him and other scientists among people in different climates.C.detailed records of temperature changes in different places.D.detailed records of different ways of thinking among peoples in different climates.4.Why does the author say summer is a good time to take a long vacation from thinking?A.because a long vacation in summer helps to improve people’s mental power.B.because people tend to be less creative during summer.C.because summer is a good time for outdoor activities.D.because mental exertion in the summer heat taxes too much of people’s energy.5.The central idea of this passage is_________.A man’s mental abilities change from season to seasonB man’s intelligence various from place to placeC man should take a long vacation in summerD if you want to do creative thinking,go to a cool placePart II.Structure(虚拟语气)1.The result has turned still worse than it____.A.would otherwise have beenB.would be otherwiseC.has otherwise beenD.had otherwise been2.The stubborn young man did not follow the advice that he____on his behavior since he refused to believe he had done anything wrong.A.reflectB.had reflectedC.would reflectD.must reflect3.The storm delayed us.____the storm we would have been in time.A.ForB.Were it not forC.Had it not been forD.But4.We are all for your proposal that the discussion___.A.be put offB.was put offC.should put offD.is to put off5.He turned down her proposal that she___at the conference.A.should offerB.offerC.offeredD.offering6.What do you think of Tom’s proposal that__put on the play at tonight’s English evening?A.we will notB.we notC.we hadn’tD.we wouldn’t7.One of the requirements for a fire is that the material___to its burning temperature.A.is heatedB.will be heatedC.be heatedD.would be heated8.Mr.Smith didn’t phone me last night,but he____.A.might have toB.would doC.had toD.should have9.Sally can’t have been in Paris,or_________.A.I met himB.I’d meet himC.I’ll meet himD.I’d have met him10.I had intended to the airport yesterday,in which case I___the guests.A.might meetB.would meetC.might have metD.had metPart III.VocabularyDirections:There are15items in this part.Choose the most appropriate word or phrase to complete each of the following sentences.1.I was___________in a book and didn’t hear you call.a.motivatedb.absorbedc.skilledd.evaluated2.It was very______of you to stop the car for me.a.thinkingb.importantc.thoughtfuld.grand3.I know nothing about the accident;it happened_______to my arrival here.a.beforeb.afterc.followingd.previous4.Janet and Bob________for many years before they met.a.respondedb.correspondedc.respondd.in response to5.The airplane arrived one hour behind_______.a.timetableb.planc.dated.schedule6.She eats barely enough to______life.a.obtainb.sustainc.acuted.desirable7.The rivalry is too strong,so we have_________prospects of success.a.slenderb.thinc.slimd.great8.The balance of nature is so_______on the tundra(冻土)that even minor disturbances may produce major changes in the environment.a.delicateb.dedicatec.subtled.sufficient9.They_______after a year of marriage.a.split upb.break upc.make upd.take up10.Her father wants her to go to university,but she is not______.a.keenb.eagerc.acuted.desirable11.Obviously,Tom is_______of the trouble he caused.a.sensualb.sensitivec.sensibled.sensuous12.The message itself is usually short,often no more than a slogan which the public______with the product.a.identifiesb.equalsc.recognizesd.notes13.The fire cast a warm_______on the walls.a.gloveb.glazec.glowd.glue14.There has been very little response_________our call for help.a.forb.toc.ind.on15.He is only18years old.So he is a(n)________actor in the U.S.a.startingb.buddingc.attractived.keenPart IV.ClozeDirections:There are20blanks in the following passages.For each blank there are four choices A,B,C and D.You should choose the answer that best fits into the passage.Wise buying is a positive way in which you can make your mony go further.The1you go about purchasing an article or a service can actually2you money or can add3the cost.Take the4example of a hairdryer.If you are buying a hairdryer,you might5that you are making the6buy if you choose one7look you like and which is also the cheapest8 price.But when you get it home you may find that it9twice as long as a more expensive10 to dry your hair.The cost of the electricity plus the cost of your time could well11your hairdryer the most expensive one of all.So what principles should you12when you go out shopping?If you13your home,your car or any valuable14in excellent condition,you will be saving money in the long15.Before you buy a new16,talk to someone who owns one.If you can,use it or borrow it to check it suits your particular17.Before you buy an expensive18,or a service,do check the price and19is on offer.If possible,choose20three items or estimates.1.A)form B)fashion C)way D)method2.A)save B)preserve C)raise D)retain3.A)up B)to C)in D)on4.A)easy B)single C)simple D)similar5.A)convince B)accept C)examine D)think6.A)proper B)best C)reasonable D)most7.A)its B)which C)whose D)what8.A)for B)with C)in D)on9.A)spends B)takes C)lasts D)consumes10.A)mode B)copy C)sample D)model11.A)cause B)make C)leave D)bring12.A)adopt B)lay C)stick D)adapt13.A)reserve B)decorate C)store D)keep14.A)products B)possession C)material D)ownership15.A)run B)interval B)period D)time16.A)appliance B)machinery C)utility D)facility17.A)function B)purpose C)target D)task18.A)component B)element C)item D)particle19.A)what B)which C)that D)this20.A)of B)in C)by D)from。