驻马店市重点中学2025届高三第四次模拟考试英语试卷含解析

驻马店市重点中学2025届高三第四次模拟考试英语试卷注意事项:1．答题前，考生先将自己的姓名、准考证号码填写清楚，将条形码准确粘贴在条形码区域内。2．答题时请按要求用笔。3．请按照题号顺序在答题卡各题目的答题区域内作答，超出答题区域书写的答案无效；在草稿纸、试卷上答题无效。4．作图可先使用铅笔画出，确定后必须用黑色字迹的签字笔描黑。5．保持卡面清洁，不要折暴、不要弄破、弄皱，不准使用涂改液、修正带、刮纸刀。第一部分（共20小题，每小题1.5分，满分30分）1．Thebusdroppedmeoffandpulledaway_____IrealizedIhadleftmybagonit.A．whileB．beforeC．afterD．since2．You________beCarol.Youhaven’tchangedabitafteralltheseyears.A．must B．can C．will D．shall3．Thisrestauranthasbecomepopularforitswide______offoodsthatsuitalltastesandpockets.A．production B．offerC．range D．division4．Kunmingiscalled“SpringCity”,butit_____snowinwinter.A．shall B．can C．must D．might5．youcanlearntoappreciatethechallengesinlife,youwillfindinnerstrength.A．WhenB．WhileC．BeforeD．Unless6．Ihavenodoubtthathewillmakeit,butIwonder_____heisreallyreadyenough.A．what B．whyC．whether D．That7．Heworkedinacarfactoryforfouryears,______hefoundedhisowncompanyinhishometown.A．afterwhich B．afterwhenC．afterthat D．afterit8．Thenewsupermarketannouncedthatthefirsttopurchasegoodsontheopeningday______________getabigprize.A．must B．willC．shall D．need9．______farinthecontest,wearesodisappointed.A．Notgetting B．NottogetC．Nothavinggot D．Notgot10．_____whattheysayaboutme,I’mgoingtocontinuemywork.A．Intermsof B．RegardlessofC．Insteadof D．Infavorof11．IowemycurrentsuccesstoDavid,mybestfriendsincechildhood,withoutwhomIhavenoideawhereI________today.A．am B．wasC．wouldhavebeen D．wouldbe12．August8th，2008isaspecialday，________________，Ithink，thatwillberememberedbytheChineseforever.A．one B．whatC．which D．theone13．—Whataboutyourself-drivetripyesterday?—Tiring!Theroadwasbeingwidened,andwe________aroughride.A．had B．haveC．wouldhave D．havehad14．________bymanypotentialcustomers,thesalesmanhadtogatherhiscourageandselltheproductindifferentways.A.Havingdenied B．DenyingC．Beingdenied D．Havingbeendenied15．—Kevin,timeforthenextdestination!—Nohurry!Another15minutesandwe_____alltheexhibitionroomsofthemuseum.A．amexploringB．haveexploredC．willexploreD．willhaveexplored16．JamesSmithandhisgirlfriendwenttoChenyiSquaretocelebratetheNewYear,never_________.A．returned B．toreturnC．returning D．havingreturned17．LiHua____hismoneyfordollarsbeforehewentonaholidayinAmerica.A．exchangesB．hasexchangedC．willexchangeD．hadexchanged18．Mydaughter,_________allkindsofmeat,wouldnotliketoeatanyvegetable,whichworriesmealot.A．devotedto B．addictedto C．accustomedto D．exposedto19．Fathermadeapromise______________Ididwellintheentranceexam,hewouldtakemetoHongKonginthesummervacation.A．ifthat B．ifC．thatif D．that20．InAustralia,manyroadsignsarenowbothinEnglishandChinese,______iteasierforChinesetouriststotravel.A．makingB．madeC．makeD．makes第二部分阅读理解（满分40分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。21．（6分）ThefirstorganizedsystemforsendingmessagesbeganinEgyptaround1500B．C．ThissystemdevelopedbecausethepharaohsfrequentlyneededtosendmessagesupanddowntheNileRiverinordertokeeptheirempirerunningsmoothly.Later,thePersiansdevelopedamoreefficientsystemforsendingmessagesusingmenandhorses.MessagescarriersrodealongtheroadsystemstretchingfromoneendofthePersianEmpiretotheother.Alongtheseroads,freshmenandhorseswaitedatspecialstationstotakeandpassalonganymessagesthatneededtobesent.Thestationswhereriderspassedmessagesbackandforthwerebuilt23kilometersapart,sothemenandhorseswereabletotravelquicklybetweenthem.TheRomanslatertookuphisideaandimproveditbyusingamoreadvancedandextensiveroadsystem.InChina,however,KublaiKhanhadbuiltuphisownsystemfordeliveringmessages.ThissystemworkedinthesamebasicwayastheRomansystem.ThedifferencewasthatKublaiKhankept300,000horsesalongtheroadsofthisdeliverylines.Therewereover10,000stationswhereamessagewouldbepassedfromoneridertoanotherwithafreshhorse.Inthisway,KublaiKhancouldreceivemessagesfromanywhereinthecountryinonlyafewdays.Itwasnotuntilthe1500sthatawell-organizedpostalsystemappearedagaininEurope.Onefamily,thevonTaxisfamily,gainedtherighttodelivermailfortheHolyRomanEmpireandpartsofSpain.Thisfamilycontinuedtocarrymail,bothgovernmentandprivate,throughoutEuropeforalmost300years.In1653,aFrenchman,RenouarddeVelayer,establishedasystemfordeliveringpostinParis.Postalchargesatthattimewerepaidbytherecipient,butdeVelayer'ssystemwasuniquebyallowingthesendertopre-paythecharges,inasimilarwaytothemodernstamp.Unfortunately,deVelayer'ssystemcametoanendwhenjealouscompetitorsputlivemiceinhisletterboxes,ruininghisbusiness.Eventually,government-controlledpostalsystemstookoverfromprivatepostalbusinesses,andbythe1700sgovernmentownershipofmostpostalsystemsinEuropewasanacceptedfactoflife.Thethingthatalltheseearlysystemshadincommonwasthattheywerequiteexpensiveforpublicuse,andwereintendedforusebythegovernmentandthewealthy.However,in1840,aBritishschoolteachernamedRolandHillsuggestedintroducingpostagestamps,andapostalratebasedonweight.Thisresultedinloweringpostalrates,encouragingmorepeopletousethesystemtostayintouchwitheachother,HisideahelpedtheBritishpostalsystembegintoearnprofitsasearlyas1850.SoonafterthatmanyothercountriestookupMr.Hill'sidea.Andletterwritingbecameaccessibletoanyonewhocouldwrite.Today,theRolandHillawardsaregiveneachyearto"encourageandrewardfreshideaswhichhelppromotephilately"(stampcollecting).1、Whatisthemaintopicofthepassage?A．Howinternationalletterstravel. B．Asurprisingmethodfordeliveringmail.C．Thehistoryofpostalsystems. D．Changesinthemethodsofcommunication.2、WhichofthefollowingstatementsaboutRenouarddeVelayeristrue?A．Hiswasagovernment-controlledsystem.B．Hiscompetitorsdestroyedhisbusiness.C．Hissystemlastedforhundredsofyears.D．Inhissystem,thepersonwhoreceivedtheletterpaidthepostagefees.3、Whichofthesystemsmentionedinthepassagewasmostlikethepostalsystemtoday?A．Egyptian. B．Chinese.C．deVelayer's. D．vonTaxis's.4、WhatwasRolandHill'sgreatestachievement?A．Hemadeletterwritingaccessibletotheaverageperson.B．HemadealotofmoneyfortheBritishpostalsystem.C．Hemadestampcollectingapopularhobby.D．Hewonanawardforletterwriting.22．（8分）Chinesescientistsrecentlyhaveproducedtwomonkeyswiththesamegene，ZhongZhongandHuaHua，usingthesametechniquethatgaveusDollythesheep.Thesemonkeysarenotactuallythefirstprimates（灵长目动物）tobecloned.AnotheronenamedTetrawasproducedinthelate1990sbyembryosplitting（分裂），thedivisionofanearly-stageembryointotwoorfourseparatecellstomakeclones.Bycontrast，ZhongZhongandHuaHuawereeachmadebyreplacinganeggcellnucleus（细胞核）withDNAfromadifferentbodycell.ThisDollymethod，knownassomaticcellnucleartransfer（SCNT），cancreatemoreclonesandallowsresearchersgreatercontrolovertheeditstheymaketotheDNA．Successcamefromadoptingseveralnewtechniques.Theseincludedanewtypeofmicroscopetobetterviewthecellsduringhandlingorusingseveralmaterialsthatencouragecellreprogramming，whichhadn'tbeentriedbeforeonprimates.Still，theresearchprocessproveddifficult,andmanyattemptsbytheteamfailed.Justtwohealthybabymonkeyswerebornfrommorethan60testedmothers.Thisledtomanyresearchers'pouringwaterontheideathattheteam'sresultsbringscientistsclosertocloninghumans.Theythoughtthisworkisnotasteppingstonetoestablishingmethodsforobtaininglivebornhumanclones.Instead,thisclearlyremainsaveryfoolishthingtoattempt,itwouldbefartooinefficient,fartoounsafe,anditisalsopointless.Butthescientistsinvolvedemphasizedthatthisisnottheirgoal.Thereisnownobarriertocloningprimatespecies,thuscloninghumansisclosertoreality.However,theirresearchpurposeisentirelytoproducenon-humanprimatemodelsforhumandiseases;theyabsolutelyhavenointention,andsocietywillnotpermitthisworktobeextendedtohumans.Despitelimitations,theytreatthisbreakthroughasanovelmodelsystemforscientistsstudyinghumanbiologyanddiseases.1、WhatdoweknowaboutthetechnologycalledSCNT?A．Itcreatedthefirsttwoprimates.B．ItmaycontributetoeditingtheDNA．C．Itcandivideanearly-stageembryointoseveralcells.D．Itproducedtwoclonedmonkeyswithdifferentgenes.2、Whatdoestheauthormeanby“pouringwaterontheidea”inParagraph2?A．Keepingahottopicofit.B．Havingalowopinionofit.C．Attachingnoimportancetoit.D．Addingsupportiveevidencetoit.3、Whatisthescientists'purposeofcloningthesemonkeys?A．Tohelpwiththestudyofhumandiseases.B．Toserveasasteppingstonetonewtechniques.C．Topreparefortheirresearchonhumancloning.D．Toraisemoneyforstudyinghumanbiology.4、Whatcanweinferfromthepassage？A．Newtechniquesseemtobepointless.B．Cloninghumansisalreadyonitsway.C．Societywon'tagreetocloneanothermonkey.D．Thesuccessrateofcloningamonkeyisnothigh.23．（8分）Judgingfromrecentsurveys,mostexpertsinsleepbehavioragreethatthereisvirtuallyanepidemic(流行病)ofsleepinessinthenation.“Ican’tthinkofasinglestudythathasn’tfoundAmericansgettinglesssleepthantheyoughtto,”saysDr.David.Evenpeoplewhothinktheyaresleepingenoughwouldprobablybebetteroffwithmorerest.Thebeginningofoursleep-deficit(睡眠不足)crisiscanbetracedtotheinventionofthelightbulbacenturyago.Fromdiaryentriesandotherpersonalaccountsfromthe18thand19thcenturies,sleepscientistshavereachedtheconclusionthattheaveragepersonusedtosleepabout9.5hoursanight."Thebestsleephabitsoncewereforcedonus,whenwehadnothingtodointheeveningdownonthefarm,anditwasdark."Bythe1950sand1960s,thatsleepschedulehadbeenreduceddramatically,tobetween7.5and8hours,andmostpeoplehadtowaketoanalarmclock."Peoplecheatontheirsleep,andtheydon'tevenrealizethey'redoingit,"saysDrDavid."Theythinkthey'reokaybecausetheycangetbyon6.5hours,whentheyreallyneed7.5,8orevenmoretofeelideallyenergetic."Perhapsthemostmercilessrobberofsleep,researcherssay,isthecomplexityoftheday.Wheneverpressuresfromwork,family,friendsandcommunitymount,manypeopleconsidersleeptheleastexpensiveitemonhisprogramme."Inoursociety,you'reconsidereddynamicifyousayyouonlyneed5.5hours'sleep.Ifyou'vegottoget8.5hours,peoplethinkyoulackdriveandambition."Todeterminetheconsequencesofsleepdeficit,researchershaveputsubjectsthroughasetofpsychologicalandperformancetestsrequiringthem,forinstance,toaddcolumnsofnumbersorrecallapassagereadtothemonlyminutesearlier."We'vefoundthatifyou'reinsleepdeficit,performancesuffers,"saysDrDavid."Short-termmemoryisweakened,asareabilitiestomakedecisionsandtoconcentrate."1、AccordingtoDr.David,Americans________.A．areideallyvigorousevenunderthepressureoflifeB．oftenneglecttheconsequencesofsleepdeficitC．donotknowhowtorelaxthemselvesproperlyD．cangetbyon6.5hoursofsleep2、ManyAmericansbelievethat_____________.A．sleepisthefirstthingthatcanbesacrificedwhenoneisbusyB．theyneedmoresleeptocopewiththecomplexitiesofeverydaylifeC．tosleepissomethingonecandoatanytimeofthedayD．enoughsleeppromotespeople’sdriveandambition3、Theword“subjects”(Line1,Para4)refersto__________.A．theperformancetestsusedinthestudyofsleepdeficitB．specialbranchesofknowledgethatarebeingstudiedC．peoplewhosebehaviororreactionsarebeingstudiedD．thepsychologicalconsequencesofsleepdeficit4、Itcanbeconcludedfromthepassagethatoneshouldsleepasmanyhoursasisnecessaryto____________.A．improveone’smemorydramaticallyB．beconsidereddynamicbyotherpeopleC．maintainone’sdailyscheduleD．feelenergeticandperformadequately24．（8分）阅读理解Onthefirstdayofschoolourprofessorintroducedhimselfandchallengedustogettoknowsomeonewedidn'tknow.Ilookedroundwhenagentlehandtouchedmyshoulder.Iturnedaroundtofindawrinkled,littleoldladywithasmile.Shesaid,“Hi,handsome.MynameisRose.I'meighty­sevenyearsold.CanIgiveyouahug？”Ilaughedandenthusiasticallyresponded,“Ofcourseyoumay！”Shegavemeagiantsqueeze.“Whyareyouincollegeatsuchayoung，innocentage？”Iasked.“IalwaysdreamedofhavingacollegeeducationandnowI'mgettingone！”shetoldme.AfterclasswewalkedtotheStudentUnionbuildingandsharedachocolatemilkshake.Webecameinstantfriends.Everydayofthenextthreemonthswewouldleaveclasstogetherandtalknon­stop.Iwasalwayslisteningtothis“timemachine”asshesharedherwisdomandexperiencewithme.Overthecourseoftheyear,Rosebecameacampusicon(偶像)andsheeasilymadefriendswherevershewent.AttheendofthesemesterweinvitedRosetospeakatourfootballdinner.I'llneverforgetwhatshetaughtus.“Wedonotstopplayingbecauseweareold;wegrowoldbecausewestopplaying.Thereisahugedifferencebetweengrowingolderandgrowingup.Anybodycangrowolder.Thatdoesn'ttakeanytalentorability.Theideaistogrowupbyalwaysfindingopportunitiesinchange.Havenoregrets.Theelderlyusuallydon'thaveregretsforwhatwedid,butratherforthingswedidnotdo.Theonlypeoplewhofeardeatharethosewithregrets.”Sheconcludedherspeechbycourageouslysinging“TheRose”．Shechallengedeachofustostudythelyrics(歌词)andlivethemoutinourdailylife.Attheyear'sendshefinishedthecollegedegreeshehadbegunallthoseyears.OneweekaftergraduationRosediedpeacefullyinhersleep.1、Whathappenedtotheauthoronthefirstdayofschool?A．Hegottoknowanoldprofessor.B．Hemadetheacquaintanceofanoldlady.C．HejoinedtheStudentUnion.D．Hehadtoshareamilkshakewithothers.2、FromtheunderlinedsentenceinParagraph1,wecanfindouttheauthor's________.A．concernaboutageB．respectfortheoldC．curiosityabouttheladyD．complaintabouteducation3、Intheauthor'seyes，________.A．RosewasinnocentandgenerousB．RosewaswiseandskilledC．Rosewastalentedandhard­workingD．Rosewascourageousandherwordswereinspiring4、WhichsayingmightRosepossiblysupport________.A．Oneisnevertoooldtolearn.B．Afriendinneedisafriendindeed.C．Romewasn'tbuiltinaday.D．Itisnousecryingoverspiltmilk.25．（10分）1、Whatcausedmusicalstomoveinanewdirectionduringthe1230's?A．Thedevelopmentofnewmusicalinstruments.B．Theaudiencesdemandformorerealisticartforms.C．Therisingpopularityofothertypesofentertainment.D．Thegreateracceptanceofblackperformersbywhiteaudiences.2、Inwhichperioddidmusicaltheatrebecomemorecomplexanddramatic?A．Pre-1200. B．1200-1222.C．1240-1242. D．1250-1252.3、WhatcanbereasonablyinferredaboutthemusicalWestSideStory?A．Ittolditsstoryinanewway.B．Itwasbasedonatruestory.C．Itwasanon-Broadwayshow.D．Itwasnotverysuccessfulatfirst.第三部分语言知识运用（共两节）第一节（每小题1.5分，满分30分）阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项．26．（30分）Iwasdrivingmycartheotherday.Theradiowasplaying,andIwas1along.Thesongwasa2oneandevenmyweakvoicesoundedgood.Thensomethingbad3,however.Thesweetsoundofthemusicendedandwas4withthealarmingnewsbreak.Idroveonwhilethe5saidpricesweregoinghigheragainbecauseofthe6speculation(投机)onWallStreet.TheraceforthePresidencywasgettingworse.Violence7whenfansofasportsteamwentwild,8theirfavoriteteam’schampionship.Finally,Icould9nomoreandturnedofftheradio.Silenceseemed10tolisteningtoanythingelseaboutthecrazy,competitivesocietywelivein.IsloweddownasIenteredalocaltownand11thepeople.12asmilingwomanwasthrowingbirdseedintoherbackyard,adozenbirdsflewdowntoenjoythe13beinglaidoutbeforethem.Ayoungmanwas14hislittledaughtersafelyinhisarms.Hetickled(胳肢）her15whenshepulledthehatoffhisheadandtheybothlaughed.IlaughedtooasIlookedatallofthis16.Althoughinmycartheradiowas17,inmyheartIwasstillsinging.18,thisworldcouldusealittlemorekindnessandalotlesscompetition.Kindnessmakesusall19inthislife.Youronlycompetitioniswith20:tobethebestpossibleyouthatyoucanbe.1、A．singingB．dancingC．listeningD．running2、A．seriousB．joyfulC．sorrowfulD．popular3、A．disappearedB．struckC．occurredD．continued4、A．disturbedB．combinedC．comparedD．replaced5、A．speakerB．announcerC．singerD．programmer6、A．creativeB．representativeC．competitiveD．positive7、A．brokeoutB．brokedownC．brokeinD．brokeup8、A．congratulatingB．celebratingC．defendingD．promoting9、A．ignoreB．escapeC．shareD．take10、A．comfortableB．appropriateC．preferableD．pleasant11、A．soughtB．appreciatedC．visitedD．watched12、A．WhileB．UntilC．BeforeD．After13、A．smileB．serviceC．feastD．attraction14、A．carryingB．tyingC．placingD．dragging15、A．angrilyB．gentlyC．terriblyD．firmly16、A．loveB．messC．kindnessD．phenomenon17、A．downB．onC．outD．off18、A．IntruthB．IntheoryC．InbriefD．Inturn19、A．winnersB．leadersC．fightersD．learners20、A．societyB．yourselfC．oneselfD．others第二节（每小题1.5分，满分15分）阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。27．（15分）Historianshavesaidthatwehavealwayshadasweettooth.Oursweettoothhasgrownovertheyearsandpeoplearenowmoreattached1．sweetsthaneverbefore.TimRichardson,2．famoushistorian,hascreatedatimelinetoshowourloveofsweets,startingasearlyas8,000yearsBC．Hesaid,“Asweetthing3．(enjoy)duringthedaycanbeasourceofsimplecomfortandpleasurecheeringusup.Peoplehaveknownthisfor4．(century).Throughouthistory,manysweetshavekepttheircharmandpopularitybecausetheyhavekeptupwiththe5．(late)tastetrends.”Gavepaintingshavebeenfoundofourearlyancestorsattackingbeehives(蜂窝)6．(find)honeyAfunfactaboutthesesweetsisthathoneycomb(蜂巢)wasthefirsteversweeteaten.Astheyears7．(go)on,lollypops(棒棒糖)werefirsteatenin9ADandgumswereenjoyedasearlyasthe1650’s.Amainproductofthesweetmarkettoffeeappearedinthe1890’s.Otherpopularsweets,suchasboiledsweets,chewinggumandbubblegum,camelater.Chewinggumhasahistorythat8．(date)backtotheancientGreeks.9．,itwasn’tuntil192810．WalterDiemerhappenedonjusttherightgumrecipetomaketheveryfirstbubblegum.第四部分写作（共两节）第一节短文改错（满分10分）28．（10分）假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。删除：把多余的词用斜线（\）划掉。修改：在错的词下划一横线，并在该词下面写出修改后的词。注意：1、每处错误及其修改均仅限一词；2、只允许修改10处，多者（从第11处起）不计分。Iwillsharewithyouatruestoryhappenedacoupleofdaysago．Oneofmyclassmateboughtabagofsnacksfromafoodstore．Afewroommatesweretheninvitedtoenjoysnacks．Unluckily,allofthemgotpoisonedandhadstomachacheswithourfacespale．Theyarequicklysenttoanearbyhospital．Doctorsexaminedthembutgavethemsomemedicine．Theywereoutofdangersoonbeforetakingthemedicine．Thisaccidentshouldmakeustorealizetheseriousnessofthefoodsafetyproblem．Istrongsuggestthatthewholesocietypaysmoreattentiontofoodsafety．第二节书面表达（满分25分）29．（25分）假定你是李华。下学期你的表妹Jane将进入重点高中学习，她对高中生活学习充满了期待。请给Jane写一封邮件，内容包括：1.祝贺她将进入重点高中学习2.建议她了解高中生活学习的特点，例如校园生活丰富多彩；课程内容的不同设置……3.再次表示祝贺，提出美好祝愿。注意：1.词数80左右2.可适当增加细节，以使行文连贯。DearJane,________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

参考答案第一部分（共20小题，每小题1.5分，满分30分）1、B2、A3、C4、B5、A6、C7、A8、C9、C10、B11、D12、A13、A14、D15、D16、B17、D18、B19、C20、A第二部分阅读理解（满分40分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。21、1、C2、B3、C4、A22、1、B2、B3、A4、D23、1、B2、A3、C4、D24、Everyday,peoplecomeintocontactwiththousandsofchemicals.Thesechemicalsaresaidtobeharmlesstohumanhealth.Infact，thechemicalsareconsideredsosafethatwewashwiththem.Weputthemonourbodiesandevenourfaces.Otherchemicalproductsareusedthroughoutourhomes.Bythetimeyouwalkoutofyourfrontdoor,youhavealreadybeenexposedtothousandsofchemicals.Onitsown,eachchemicalseemsharmless.Butincombinationwithotherchemicals,theymaybecomedeadly.Thatisthefindingofatwo-yearstudybyahigh-profiletaskforceofscientists.Thetaskforcewastoldtoinvestigatethecancer-causingpossibilityofchemicalmixtures.LindaGulliverwasoneof174scientistsonthetaskforce.Theirjobwastostudythecancer-causingpotentialof85chemicals.All85aresaidtobecommonintheenvironment.Ms.Gulliverexplainsthatchemicalshavethepotentialorytoformdangerousmixtures.Evensimplemineralscanbecomedangerouswhenmixedwithchemicalsfoundinplasticsorbeautyproducts.Workingingroups,thescientistsexploredhowdifferentchemicalmixturescouldleadtocancer.Ms.Gulliver’steamlookedattheabilityofdifferentcombinationstosupportthein-creaseofmalignant(恶性的)humancells.Shesaysthecurrentwaytoidentifywhetherchemicalscausecanceristotestthemoneatatime.Thismethodleads,sheadds,toalonglistofsupposedly“safe”chemicals.Sheandherteamsaythatapproachneedstochange.“Wedefinitelyneedcertainresearch…tofindoutwhatmixturesofchemicalswouldbemoreharmfulthanothers;whatgroupsofchemicals,whentogether,wouldproducemoreharmfuleffects.Andatthemoment,thatisnotknown.”Anestimatedoneinfivecancershasbeenlinkedtochemicalexposure.Itmayturnoutthatthecancer-causingvillain(恶棍)isnotasinglechemicalatall.5、Whateffectmayonesinglechemicalhaveonusaccordingtothetext?A．Itmayletussufferfromcancer.B．Itmaynotcausedangertous.C．Itmaydestroyourbody.D．Itmayletourbodymakeachange.6、WhatcanwelearnaboutMs.Gulliver’sresearch?A．Shehasfoundreasonsforfivekindsofcancers.B．Shehasfoundthatonlyonechemicalca