大学英语四级试题.docx
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大学英语四级试题.docx
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大学英语四级试题
2021年大学英语四级试题
PartIListeningprehension(20minutes)
SectionA
Directions:
Inthissection,youwillhear10shortconversations.Attheendofeachconversation,aquestionwillbeaskedaboutwhatwassaid.Boththeconversationandthequestionwillbespokenonlyonce.Aftereachquestiontherewillbeapause.Duringthepause,youmustreadthefourchoicesmarkedA),B),C)andD),anddecidewhichisthebestanswer.ThenmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecenter.
E_le:
Youwillhear:
Youwillread:
A)Attheoffice.
B)Inthewaitingroom.
C)Attheairport.
D)Inarestaurant.
Fromtheconversationweknowthatthetwoweretalkingaboutsomeworktheywillstartat9oclockinthemorningandhavetofinishat2intheafternoon.Therefore,D)5hoursisthecorrectanswer.Youshouldchoose[D]ontheAnswerSheetandmarkitwithasinglelinethroughthecenter.
SleAnswer[A][B][C][D]
1.A)Thewomanisaclosefriendoftheman.
B)Thewomanhasbeenworkingtoohard.
C)Thewomanisseeingadoctor.
D)Thewomanistiredofherwork.(C)
2.A)Thisapplepietastesverygood.
B)Hismotherlikesthepieverymuch.
C)Thispiecantmatchhismothers.
D)Hismothercantmakeapplepies.(A)
3.A)Takeawalk.
B)Giveaperformance.
C)Listentothemusic.
D)Dancetothemusic.(D)
4.A)Readanarticleonpoliticalscience.
B)Presentadifferenttheorytotheclass.
C)Readmorethanonearticle.
D)Chooseabetterarticletoread.(C)
5.A)ThewomanwouldunderstandifshedidMarysjob.
B)ThewomanshoulddothetypingforMary.
C)ThewomanshouldworkashardasMary.
D)Thewomanisntaskillfultypist.(A)
6.A)HewantstomakeanappointmentwithMr.Smith.
B)HewantstomakesurethatMr.Smithwillseehim.
C)Hewantstochangethetimeoftheappointment.
D)Hewantsthewomantomeethimatthreeoclock.(B)
7.A)Hegetsnervousveryeasily.
B)Heisanine_periencedspeaker.
C)Heisanawfulspeaker.
D)Hehasntpreparedhisspeechwell.(B)
8.A)Shedidntlikethebooksthemanbought.
B)Therewasntalargeselectionatthebookstore.
C)Themanboughtalotofbooks.
D)Shewantedtoseewhatthemanbought.(C)
9.A)Buyaticketforthetemoclockflight.
B)Askthemantochangetheticketforher.
C)Gototheairportimmediately.
D)Switchtoadifferentflight.(D)
10.A)Dr.Lemoniswaitingforapatient.
B)Dr.Lemonisbusyatthemoment.
C)Dr.Lemonhaslosthispatience.
D)Dr.Lemonhasgoneouttovisitapatient.(B)
SectionB
Directions:
Inthissection,youwillhear3shortpassages.Attheendofeachpassage,youwillhearsomequestions.Boththepassageandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecenter.
Passageone
Questions11to14arebasedonthepassageyouhavejustheard.
11.A)Acaroutsidethesupermarket.
B)Acaratthebottomofthehill.
C)Paulscar.
D)Thesportscar.(C)
12.A)Insidethecar.
B)Atthefootofthehill.
C)Inthegarage.
D)Inthesupermarket.(D)
13.A)Thedriverofthesportscar.
B)Thetwogirlsinsidethecar.
C)Themanstandingnearby.
D)ThesalesmanfromLondon.(A)
14.A)Nobody.
B)Thetwogirls.
C)Thebusdriver.
D)Paul.(A)
PassageTwo
Questions15to17arebasedonthepassageyouhavejustheard.
15.A)Hisfriendgavehimthewrongkey.
B)Hedidntknowwherethebackdoorwas.
C)Hecouldntfindthekeytohismailbo_.
D)Itwastoodarktoputthekeyinthelock.(A)
16.A)Itwasgettingdark.
B)Hewasafraidofbeingblamedbyhisfriend.
C)Thebirdsmighthaveflownaway.
D)Hisfriendwouldarriveanytime.(B)
17.A)Helookedsillywithonlyoneleginsidethewindow.
B)Heknewthepolicemanwouldntbelievehim.
C)Thetorchlightmadehimlookveryfoolish.
D)Herealizedthathehadmadeamistake.(B)
PassageThree
Questions18to20arebasedonthepassageyouhavejustheard.
18.A)Thethreatofpoisonousdesertanimalsandplants.
B)Thee_haustionofenergyresources.
C)Thedestructionofoilwells.
D)Thespreadoftheblackpowderfromthefires.(D)
19.A)Theundergroundoilresourceshavenotbeenaffected.
B)Mostofthedesertanimalsandplantshavemanagedtosurvive.
C)Theoillakessoondriedupandstoppedevaporating.
D)Theundergroundwaterresourceshavenotbeenpolluted.(D)
20.A)Torestorethenormalproductionoftheoilwells.
B)Toestimatethelossescausedbythefires.
C)Toremovetheoilleftinthedesert.
D)Tousetheoilleftintheoillakes.(C)
PartIIReadingprehension(35minutes)
Directions:
Thereare4passagesinthispart.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).YoushoulddecideonthebestchoiceandmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecenter.
PassageOne
Questions21to25arebasedonthefollowingpassage.
Unlesswespendmoneytospotandpreventasteroids(小行星)now,onemightcrashintoEarthanddestroylifeasweknowit,saysomescientists.
Asteroidsarebiggerversionsofthemeteoroids(流星)thatraceacrossthenightsky.MostorbitthesunfarfromEarthanddontthreatenus.ButtherearealsothousandsofasteroidswhoseorbitsputthemonacollisioncoursewithEarth.
Buy$50millionworthofnewtelescopesrightnow.Thenspend$10millionayearforthene_t25yearstolocatemostofthespacerocks.Bythetimewespotafatalone,thescientistssay,wellhaveawaytochangeitscourse.
Somescientistsfavorpushingasteroidsoffcoursewithnuclearweapons.Butthecostwouldntbecheap.
IsitworthitTwothingse_pertsconsiderwhenjudginganyriskre:
1)Howlikelytheeventis;and2)Howbadtheconsequencesiftheeventoccurs.E_pertsthinkanasteroidbigenoughtodestroylotsoflifemightstrikeEarthonceevery500,000years.Soundsprettyrarebutifonedidfall,itwouldbetheendoftheworld.Ifwedonttakecareofthesebigasteroids,theylltakecareofus,saysonescientist.Itsthatsimple.
Thecure,though,mightbeworsethanthedisease.DowereallywantfleetsofnuclearweaponssittingaroundonEarthTheworldhaslesstofearfromdoomsday(毁灭性的)rocksthanfromagreatnuclearfleetsetagainstthem,saidaNewYorkTimesarticle.
21.Whatdoesthepassagesayaboutasteroidsandmeteoroids
A)Theyareheavenlybodiesdifferentinposition.
B)Theyareheavenlybodiessimilarinnature.
C)Therearemoreasteroidsthanmeteoroids.
D)Asteroidsaremoremysteriousthanmeteoroids.(B)
22.WhatdoscientistssayaboutthecollisionofanasteroidwithEarth
A)Itisveryunlikelybutthedangere_ists.
B)Suchacollisionmightoccuronceevery25years.
C)CollisionsofsmallerasteroidswithEarthoccurmoreoftenthane_pected.
D)Itsstilltooearlytosaywhethersuchacollisionmightoccur.(A)
23.Whatdopeoplethinkofthesuggestionofusingnuclearweaponstoalterthecoursesofasteroids
A)Itsoundspracticalbutitmaynotsolvetheproblem.
B)Itmaycreatemoreproblemsthanitmightsolve.
C)ItisawasteofmoneybecauseacollisionofasteroidswithEarthisveryunlikely.
D)Furtherresearchshouldbedonebeforeitisprovedapplicable.(B)
24.Wecanconcludefromthepassagethat________.
A)whilepushingasteroidsoffcoursenuclearweaponswoulddestroytheworld
B)asteroidsracingacrossthenightskyarelikelytohitEarthinthenearfuture
C)theworryaboutasteroidscanbelefttofuturegenerationssinceitisunlikelytohappeninourlifetime
D)workablesolutionsstillhavetobefoundtopreventacollisionofasteroidswithEarth(D)
25.Whichofthefollowingbestdescribestheauthorstoneinthispassage
A)Optimistic.
B)Critical.
C)Objective.
D)Arbitrary.(C)
PassageTwo
Questions26to30arebasedonthefollowingpassage.
Believeitornot,opticalillusion(错觉)cancuthighwaycrashes.
Japanisacaseinpoint.Ithasreducedautomobilecrashesonsomeroadsbynearly75percentusingasimpleopticalillusion.Bentstripes,calledchevrons(人字形),paintedontheroadsmakedriversthinkthattheyaredrivingfasterthantheyreallyare,andthusdriversslowdown.
NowtheAmericanAutomobileAssociationFoundationforTrafficSafetyinWashingtonD.C.isplanningtorepeatJapanssuccess.Startingne_tyear,thefoundationwillpaintchevronsandotherpatternsofstripesonselectedroadsaroundthecountrytotesthowwellthepatternsreducehighwaycrashes.
E_cessivespeedplaysamajorroleinasmuchasonefifthofallfataltrafficaccidents,accordingtothefoundation.Tohelpreducethoseaccidents,thefoundationwillconductitstestsinareaswherespeed-relatedhazardsarethegreatestcurves,e_itslopes,trafficcircles,andbridges.
Somestudiessuggestthatstraight,horizontalbarspaintedacrossroadscaninitiallycuttheaveragespeedofdriversinhalf.However,trafficoftenreturnstofullspeedwithinmonthsasdriversbeeusedtoseeingthepaintedbars.
Chevrons,scientistssay,notonlygivedriverstheimpressionthattheyaredrivingfasterthantheyreallyarebutalsomakealaneappeartobenarrower.Theresultisalongerlastingreductioninhighwayspedandthenumberoftrafficaccidents.
26.Thepassagemainlydiscusses________.
A)anewwayofhighwayspeedcontrol
B)anewpatternforpaintinghighways
C)anewapproachtotrainingdrivers
D)anewtypeofopticalillusion(A)
27.Onroadspaintedwithchevrons,driverstendtofeelthat________.
A)theyshouldavoids
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