四级模拟卷.docx
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四级模拟卷.docx
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四级模拟卷
大学英语4级考试
CollegeEnglishModelTestone
—BandFour—
PartⅠWriting(30minutes)
Directions:
Forthispart,youareallowedthirtyminutestowriteacompositiononthetopic:
AidEducationinChina.Youshouldwriteatleast120wordsfollowingtheoutlinegiveninChinesebelow:
1.每年,高校许多大学生受到鼓舞去贫困地区支教。
2.支教活动的意义。
3.我的看法。
提示:
在实考试卷中,该试题在答题卡1上。
Aid--EducationinChina
PartⅡReadingComprehension(SkimmingandScanning)(15minutes)
Directions:
Inthispart,youwillhave15minutestogooverthepassagequicklyandanswerthequestionsonAnswerSheet1.Forquestions1-7,mark
Y(forYES)ifthestatementagreeswiththeinformationgiveninthepassage;
N(forNO)ifthestatementcontradictstheinformationgiveninthepassage;
NG(forNOTGIVEN)iftheinformationisnotgiveninthepassage.
Forquestions8-10,completethesentenceswithinformationgiveninthepassage.
WillWeRunOutofWater?
Picturea“ghostship”sinkingintothesand,lefttorotondrylandbyarecedingsea.Thenimagineduststormssweepinguptoxicpesticidesandchemicalfertilizersfromthedryseabedandspewingthemacrosstownsandvillages.
Seemlikeascenefromamovieabouttheendoftheworld?
ForpeoplelivingneartheAralsea(咸海)inCentralAsia,it’salltooreal.Thirtyyearsago,governmentplannersdivertedtheriversthatflowintotheseainordertoirrigate(providewaterfor)farmland.Asaresult,theseahasshrunktohalfitsoriginalsize,stranding(使搁浅)shipsondryland.Theseawaterhastripledinsaltcontentandbecomepolluted,killingall24nativespeciesoffish.
Similarlarge--scaleeffortstoredirectwaterinotherpartsoftheworldhavealsoendedinecologicalcrisis,accordingtonumerousenvironmentalgroups.Butmanycountriescontinuetobuildmassivedamsandirrigationsystems,eventhoughsuchprojectscancreatemoreproblemsthantheyfix.Why?
Peopleinmanypartsoftheworldaredesperateforwater,andmorepeoplewillneedmorewaterinthenextcentury.
“Growingpopulationswillworsenproblemswithwater,”saysPeterH.Gleick,anenvironmentalscientistatthePacificInstituteforstudiesinDevelopment,Environment,andSecurity,aresearchorganizationinCalifornia.Hefearsthatbytheyear2025,asmanyasone--thirdoftheworld’sprojected(预测的)8.3billionpeoplewillsufferfromwatershortages.
WHEREWATERGOES
Only2.5percentofallwateronEarthisfreshwater,watersuitablefordrinkingandgrowingfood,saysSandraPostel,directoroftheGlobalWaterPolicyProjectinAmherst,Mass.Two--thirdsofthisfreshwaterislockedinglaciers(冰山)andicecaps(冰盖).Infact,onlyatinypercentageoffreshwaterispartofthewatercycle,inwhichwaterevaporatesandrisesintotheatmosphere,thencondensesandfallsbacktoEarthasprecipitation(rainorsnow).
Someprecipitationrunsofflandtolakesandoceans,andsomebecomesgroundwater,waterthatseepsintotheearth.MuchofthisrenewablefreshwaterendsupinremoteplacesliketheAmazonriverbasininBrazil,wherefewpeoplelive.Infact,theworld’spopulationhasaccesstoonly12,500cubickilometersoffreshwater—abouttheamountofwaterinLakeSuperior(苏必利尔湖).Andpeopleusehalfofthisamountalready.“Ifwaterdemandcontinuestoclimbrapidly,”saysPostel,“therewillbesevereshortagesanddamagetotheaquatic(水的)environment.”
CLOSETOHOME
Waterwoes(灾难)mayseemremotetopeoplelivinginrichcountriesliketheUnitedStates.ButAmericanscouldfaceseriouswatershortages,tooespeciallyinareasthatrelyongroundwater.Groundwateraccumulatesinaquifers(地下蓄水层),layersofsandandgravelthatliebetweensoilandbedrock.(Foreveryliterofsurfacewater,morethan90litersarehiddenunderground.)AlthoughtheUnitedStateshaslargeaquifers,farmers,ranchers,andcitiesaretappingmanyofthemforwaterfasterthannaturecanreplenish(补充)it.InnorthwestTexas,forexample,overpumpinghasshrunkgroundwatersuppliesby25percent,accordingtoPastel.
Americansmayfaceevenmoreurgentproblemsfrompollution.DrinkingwaterintheUnitedStatesisgenerallysafeandmeetshighstandards.Nevertheless,oneinfiveAmericanseverydayunknowinglydrinkstapwatercontaminatedwithbacteriaandchemicalwastes,accordingtotheEnvironmentalProtectionAgency.InMilwaukee,400,000peoplefellillin1993afterdrinkingtapwatertaintedwithcryptosporidium(隐孢子虫),amicrobe(微生物)thatcausesfever,diarrhea(腹泻)andvomiting.
THESOURCE
Wheresocontaminantscomefrom?
Indevelopingcountries,peopledumpraw(未经处理的)sewage(污水)intothesamestreamsandriversfromwhichtheydrawwaterfordrinkingandcooking;about250millionpeopleayeargetsickfromwaterborne(饮水传染的)diseases.
Indevelopedcountries,manufacturersuse100,000chemicalcompoundstomakeawiderangeofproducts.Toxicchemicalspollutewaterwhenreleaseduntreatedintoriversandlakes.(Certaincompounds,suchaspolychlorinatedbiphenyls(多氯化联二苯),orPCBs,havebeenbannedintheUnitedStates.)
Butalmosteveryonecontributestowaterpollution.Peopleoftenpourhouseholdcleaners,carantifreeze,andpaintthinners(稀释剂)downthedrain;allofthesecontainhazardouschemicals.ScientistsstudyingwaterintheSanFranciscoBayreportedin1996that70percentofthepollutantscouldbetracedtohouseholdwaste.
Farmershavebeencriticizedforoverusingherbicidesandpesticides,chemicalsthatkillweedsandinsectsbutinsectsbutthatpollutewateraswell.Farmersalsousenitrates,nitrogen--richfertilizerthathelpsplantsgrowbutthatcanwreakhavoc(大破坏)ontheenvironment.Nitratesaresweptawaybysurfacerunofftolakesandseas.Toomanynitrates“overenrich”thesebodiesofwater,encouragingthebuildupofalgae,ormicroscopicplantsthatliveonthesurfaceofthewater.Algaedeprivethewaterofoxygenthatfishneedtosurvive,attimeschokingofflifeinanentirebodyofwater.
WHAT’STHESOLUTION?
WaterexpertGleickadvocatesconservationandlocalsolutionstowater--relatedproblems;governments,forinstance,wouldbebetteroffbuildingsmall--scaledamsratherthanhugeanddisruptiveprojectsliketheonethatruinedtheAralSea.
“Morethan1billionpeopleworldwidedon’thaveaccesstobasiccleandrinkingwater,”saysGleick.“Therehastobeastrongpushonthepartofeveryone—governmentsandordinarypeople—tomakesurewehavearesourcesofundamentaltolife.”
提示:
在实考试卷中,8-10题在答题卡1上。
1.ThatthehugewaterprojectshavedivertedtheriverscausestheAralSeatoshrink.
2.Theconstructionofmassivedamsandirrigationprojectsdoesmoregoodthanharm.
3.Thechiefcausesofwatershortagearepopulationgrowthandwaterpollution.
4.TheproblemsAmericansfaceconcerningwateraregroundwatershrinkageandtapwaterpollution.
5.Accordingtothepassageallwaterpollutantscomefromhouseholdwaste.
6.ThepeoplelivingintheUnitedStateswillnotbefacedwithwatershortages.
7.WaterexpertGleickhascomeupwiththebestsolutiontowater—relatedproblems.
8.AccordingtoPeterH.Gleick,bytheyear2025,asmanyasoftheworld’speoplewillsufferfromwatershortages.
9.TwothirdsofthefreshwateronEarthislockedin.
10.Indevelopedcountries,beforetoxicchemicalsarereleasedintoriversandlakes,theyshouldbetreatedinordertoavoid.
PartⅢListeningComprehension(35minutes)
SectionA
Directions:
Inthissection,youwillhear8shortconversationsand2longconversations.Attheendofeachconversation,oneormorequestionswillbeaskedaboutwhatwassaid.Boththeconversationandthequestionswillbespokenonlyonce.Aftereachquestiontherewillbeapause.Duringthepause,youmustreadthefourchoicesmarkedA),B),C)andD),anddecidewhichisthebestanswer.ThenmarkthecorrespondingletteronAnswerSheet2withasinglelinethroughthecentre.
1.A.Summerjobs.B.Unemployment.C.CuttinggrassD.Lifeinhighschool.
2.A.Theirappointmentisatteno’clock.
B.Theprofessoriswaitingfortheircall.
C.Theyshouldcalltheprofessorafterthemeeting.
D.Theyshouldwaituntilthenextday.
3.A.Lostherjob.B.Busywithherchildren.
C.Busywithhernewjob.D.Herhusbandwon’tlethergothere.
4.A.Themanshouldworkinabandtogetmoney.
B.Themanshouldwithdrawallhismoneyfromthebank.
C.Themanshouldtrytoborrowmoneyfromhisfriend.
D.Themanshouldtrytogetaloanfromabank.
5.A.Theman.B.Thedoctor.C.Thewoman.D.Thewoman’suncle.
6.A.Asupermarket.B.Adrugstore.
C.Adepartmentstore.D.Acarrepairshop.
7.A.Theyshoulddefinitelydoit.
B.Theycan’tfindthemeanstodoit.
C.Itwouldbeameaninglessact.
D.Shehadmeanttodoitearlier.
8.A.Tothedoctor’soffice.B.ToTom’sbirthdayparty.
C.Tothelibrary.D.Totheclass.
Questions9to12arebasedontheconversationyouhavejustheard.
9.A.Aclasspresentationthey’repreparing.
B.Atelevisionprogramthemaniswatching.
C.Visitingaclosefriendoftheirs.
D.Studyingforarest.
10.A.He’stakingabreakfromstudying.
B.Hehasalreadyfinishedstudying.
C.Hewasassignedtowatchaprogrambyhisprofessor.
D.He’sfindingoutsomeinformationforafriend.
11.A.BecauseElizabethisthewoman’sfriend.
B.BecauseElizabethisafamousstarinTV.
C.BecauseElizabethisgoodatlinearalgebra.
D.BecauseElizabethisthedreaming-girloftheman.
12.A.HeandElizabetharguedrecently.
B.HeheardElizabethdidpoorlyonthelasttest.
C.Hedoesn’twanttobotherElizabethsolateintheevening.
D.He’dratherstudyinhisowndormitory.
Questions13to15arebasedontheconversationyouhavejustheard.
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