大学英语四科大四级模拟题 2.docx
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大学英语四科大四级模拟题 2.docx
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大学英语四科大四级模拟题2
大学英语四级模拟试卷
PartI.ReadingComprehension(40%)
Directions:
Thereare4readingpassagesinthissection.Eachpassageisfollowedbysomequestions.ForeachquestiontherearefoursuggestedanswersmarkedA,B,CandD.Choosethebestanswertoeachquestion.
Passage1
Everycountrytendstoacceptitsownwayoflifeasbeingnormaloneandtopraiseorcriticizeothersastheyaresimilartoordifferentfromit.Andunfortunately,ourpictureofthepeopleandthewayoflifeofothercountriesisoftenadistortedone.Hereisagreatargumentinfavoroftravelingabroadandlearningforeignlanguages.Itisonlybytravelingorlivinginacountryandgettingtoknowitsinhabitantsandtheirlanguagethatonecanfindoutwhatacountryanditspeoplearelike.Andhowdifferenttheknowledgeonegainsthiswayfrequentlyturnsouttobefromthesecond-handinformationgatheredfromothersources!
Howoftenwefindthattheforeignerswhomwethoughttobesuchdifferentpeoplefromourselvesarenotverydifferentafterall.
Differencesbetweenpeoplesdo,ofcourse,existand,onehopes,willalwayscontinuetoexist.Theworldwillbeadullplaceindeedwhenallthedifferentnationalitiesbehaveexactlyalike,andsomepeoplemightsaythatwearerapidlyapproachingthisstateofaffairs.WithalmostthewholeofWesternEuropebelongingtotheEuropeanEconomicCommunity(EEC)andtheincreasingstandardizationthisbringsabout,plusthemuchgreaterrapidityandeaseoftravel,theremightseemsometruthinthis—atleastasfarasEuropeisconcerned.Howeverthismaybe,atlestthegreatereaseoftraveltodayhasrevealedtomorepeoplethaneverbeforethattheEnglishmanorFrenchmanorGermanisnotsomedifferentanimalfromthemselves.
1.Thepassageismostlyconcernedwiththeissueof____.
A.advantagesoftheEEC
B.attitudestowardsothercountries
C.learningforeignlanguages
D.differencesamongpeople
2.Accordingtotheauthor,____.
A.ourknowledgeofotherculturesarealwayswrong
B.readingbooksaboutothercountriesisthesafestwayofunderstandingtheirpeoples
C.therearemoresimilaritiesthandifferencesamongdifferentpeople
D.therearemoredifferencesthansimilaritiesamongdifferentpeople
3.SomepeoplethinkthatEuropeanpeoplesareidentifyingthemselveswitheachotherbecauseofthefollowingEXCEPT_____.
A.theestablishmentoftheEEC
B.thegreaterrapidityandeaseoftravel
C.theincreasingstandardization
D.therapidindustrialization
4.Theclause“Howeverthismaybe”suggeststhat____.
A.theauthorisgoingtointroduceanewidea
B.theauthorisabouttoavoidanyconclusion
C.theauthorisabouttogiveuphisownpointofview
D.theauthorwillsticktohisownpointofview
5.Thepassageseemstoattachimportanceto____.
A.thegreatereaseoftravelnowadaysthanbefore
B.theuncontrollabletendencytoidentification
C.thesimilaritiesintermsofwayoflifebetweendifferentcultures
D.thedifferencesbetweenEuropeanpeoplesandothernations
Passage2
Themoretimescientistsspenddesigningcomputersthemoretheymarvelatthehumanbrain.Tasksthatbaffle(难住)themostadvancedsupercomputer—recognizingaface,readingahandwrittennote—arechild’splayforthe3-poundorgan.Mostimportant,unlikeanyconventionalcomputer,thebraincanlearnfromitsmistakes.Researchershavetriedforyearstoprogramcomputerstoimitatethebrain’sabilities,butwithoutsuccess.Nowagrowingnumberofdesignersbelievetheyhavetheanswer:
ifacomputeristofunctionmorelikeapersonandlesslikeanover-growncalculatoritmustbebuiltmorelikeabrain,whichdistributesinformationacrossavastinterconnectedwebofnervecells,orneurons.
Conventionalcomputersfunctionbyfollowingachainlikesequenceofdetailedinstructions.Althoughveryfast,theirprocessorscanperformonlyonetaskatatime.Thisapproachworksbestinsolvingproblemsthatcanbebrokendownintosimplerlogicalpieces.Theprocessorsinaneural-networkcomputer,bycontrast,formanetworkmuchlikethenervecellsinthebrain.Sincetheseartificialneuronsareinterconnected,theycanshareinformationandperformtasksatthesametime.Thistwo-dimensionalapproachworksbestatrecognizingpatterns.
Insteadofprogramminganeural-networkcomputertomakedecisions,itsmakertrainsittorecognizepatternsinanysolutiontoaproblembyrepeatedlyfeedingexamplestothemachine.
Neuralnetworkscomeinallshapesandsizes.Untilnowmostexistedassoftwaresimulations(模拟品)becauseredesigningcomputerchipstookalotoftimeandmoney.Byexperimentingwithdifferentapproachesthroughsoftwareratherthanhardware,scientistshavebeenabletoavoidcostlymistakes.
6.Itcanbeinferredfromthefirstparagraphthatthemostadvancedsupercomputer____.
A.canrecognizeafaceandreadahandwrittennote
B.canlearnfromitsmistakes
C.weighonly3pounds
D.cannotdistributeinformationacrossaninterconnectedwebofnervecells
7.WhatisNOTtrueofaconventionalcomputer?
A.Itmustbeprogrammedbeforeitworks.
B.Itcanonlysolveoneproblematatime.
C.Itisgoodatsolvingoneproblematatime.
D.Itistrainedtorecognizepatternsinsteadofmakingdecisions.
8.Themainfeatureofaneural-networkcomputeristhat____.
A.itsprocessorsactasaninterconnectedwebofneutrons
B.itisprogrammedtomakedecisions
C.itsnetworksareofallshapesandsizes
D.itsneuronsareartificial
9.Theexpression“thistwo-dimensionalapproach”inthesecondparagraphrefersto____.
A.theconventionalcomputerandtheneuralcomputer
B.makingdecisionsandrecognizingpatterns
C.sharinginformationandperformingtasks
D.thecomputerandthehumanbrain
10.Scientistsusesoftwareratherthanhardwareintheirexperimentsbecause____.
A.itcanavoidredesigningcomputerchips
B.itcansavealotoftimeandmoney
C.itcanavoidmakingmistakes
D.itismorelikethehumanbrain
Passage3
Teenagerswhohavedonewellinhighschoolareusuallyconfidentandcollege-bound—buttheyarenotthemajority.Manyoftheirpeershavenotyetlearnednecessarysurvivalskillsorexperiencedanyfeelingofachievement.Theylackboththejobskillsandthesophisticationthatareneededtofindworkinatightjobmarket.Theirsagging(消沉的)self-imageisnotimprovedwhentheyarerejectedbyprospectiveemployerswhohaveneitherthetimenorthebudgettotrainrawrecruits.
Todaybusinessandindustryareengagedinmyriadmysteriousmachinations(谋划)thatchallengetheunderstandingofeventhebrightestadult.Nowonderyoungpeople,freshoutofseniorgovernmentclass,arelost!
Somehighschoolsacknowledgestudents’needsbyofferingworkexperienceandcareerobservationandexplorationprograms.Oftentheshyest,leastsuccessfulstudentswillnotevenapply.Formany,approachingthefirstrung(梯级)ofthecareerladderisthemostdifficultstepintheentirelifetimecareerprocess.Statisticsshowthattheunemploymentrateforyoungadultsistwotothreetimeshigherthantheratefortheremainderofthepopulation.
WalterWilliams,whoteachesatTempleUniversity,favorsalowerminimumageandwageforteenagers.Hemaintainssuchchangeswouldincreaseemploymentfortheyoung,especiallyminorities,allowingthemtostepupontothefirstrungofthecareerladderandgainbadlyneededworkexperience.Suchservicesasmovieusheringandcarhoppingmightbereinstated(恢复)withouttakingjobsawayfromolderpeople.
11.Accordingtotheauthor,mosthighschoolteenagers______.
A.areconfidentB.arestupid
C.lackconfidenceD.lackfinancialsupport
12.Theword“peers”inline2,paragraph1means_____.
A.childrenB.parents
C.noblemenD.equals
13.Atthebeginningofthesecondparagraph,theauthortriestoconvincethereaderthat_____.
A.teenagersarenottoblameforthepresentsituation
B.youngpeoplearenotdoingwellinsomehighschools
C.thereissomethingwrongwiththegovernment’spolicies
D.adultsarecertainlyclevererthanteenagers
14.Theauthorbelievesthat______.
A.youngpeopleshouldtakefirmstepstostarttheircareers
B.youngpeopleshouldhelptheadultswhenevertheycan
C.highschoolgraduatesshouldchoosetogotocollegefirst
D.unemploymentshouldbedoneawaywithinthiscountry
15.WalterWilliamsthinksthat_____.
A.youngpeopleallneedtoearnsomepocketmoney
B.somejobssuittheyoungonly
C.onlystudentswithworkexperiencearesuitableforcollegeeducation
D.youngpeopleallneedsomeworkexperience
Passage4
Thereisnoquestionthatthepooraresicker.Unfortunately,therearenonationwidemortality(死亡率)statisticsbyincome.Oneofthebeststudieshasbeenarecentcomparisonofpovertyandnon-povertyareasinChicago(Thisdoesnotpermitreallyfineanalysis,becauseofthelimitationsofareacomparisons).Crudemortalityinpovertyareaswasonlythreepercenthigherthaninnon-povertyarea;butthepeopleinpovertyareasareyounger,andifithadbeenpossibletocomputeage-specificrates,thedifferenceswouldbemuchgreater.Differentials(差异)ininfantmortalitywereverylarge—75percenthigherinpovertythaninnon-povertyareas.Inbothcases,thedifferencesbetweenwhiteandnonwhitewereevenmoresubstantialthanbetweenpovertyandnon-povertyareas.
Theclearestandbestevidenceofpoorerhealthamongthepooristobefoundinstudiesofdaysofdisabilityperpersonperyear,wheredifferencesoftheorderoftwo-to-onearefound.Thoseinfamilieswithincomeofunder$2,000ayearhave29restrictedactivitydaysaye
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