駐馬店市重點中學2025屆高三第四次模擬考試英語試卷注意事項:1．答題前，考生先將自己的姓名、準考證號碼填寫清楚，將條形碼準確粘貼在條形碼區(qū)域內。2．答題時請按要求用筆。3．請按照題號順序在答題卡各題目的答題區(qū)域內作答，超出答題區(qū)域書寫的答案無效；在草稿紙、試卷上答題無效。4．作圖可先使用鉛筆畫出，確定后必須用黑色字跡的簽字筆描黑。5．保持卡面清潔，不要折暴、不要弄破、弄皺，不準使用涂改液、修正帶、刮紙刀。第一部分（共20小題，每小題1.5分，滿分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第二部分閱讀理解（滿分40分）閱讀下列短文，從每題所給的A、B、C、D四個選項中，選出最佳選項。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（靈長目動物）tobecloned.AnotheronenamedTetrawasproducedinthelate1990sbyembryosplitting（分裂），thedivisionofanearly-stageembryointotwoorfourseparatecellstomakeclones.Bycontrast，ZhongZhongandHuaHuawereeachmadebyreplacinganeggcellnucleus（細胞核）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）閱讀理解Onthefirstdayofschoolourprofessorintroducedhimselfandchallengedustogettoknowsomeonewedidn'tknow.Ilookedroundwhenagentlehandtouchedmyshoulder.Iturnedaroundtofindawrinkled,littleoldladywithasmile.Shesaid,“Hi,handsome.MynameisRose.I'meighty-sevenyearsold.CanIgiveyouahug？”Ilaughedandenthusiasticallyresponded,“Ofcourseyoumay！”Shegavemeagiantsqueeze.“Whyareyouincollegeatsuchayoung，innocentage？”Iasked.“IalwaysdreamedofhavingacollegeeducationandnowI'mgettingone！”shetoldme.AfterclasswewalkedtotheStudentUnionbuildingandsharedachocolatemilkshake.Webecameinstantfriends.Everydayofthenextthreemonthswewouldleaveclasstogetherandtalknon-stop.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(歌詞)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．Rosewastalentedandhard-workingD．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.第三部分語言知識運用（共兩節(jié)）第一節(jié)（每小題1.5分，滿分30分）閱讀下面短文，從短文后各題所給的A、B、C和D四個選項中，選出可以填入空白處的最佳選項．26．（30分）Iwasdrivingmycartheotherday.Theradiowasplaying,andIwas1along.Thesongwasa2oneandevenmyweakvoicesoundedgood.Thensomethingbad3,however.Thesweetsoundofthemusicendedandwas4withthealarmingnewsbreak.Idroveonwhilethe5saidpricesweregoinghigheragainbecauseofthe6speculation(投機)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第二節(jié)（每小題1.5分，滿分15分）閱讀下面材料，在空白處填入1個適當的單詞或括號內單詞的正確形式。27．（15分）Historianshavesaidthatwehavealwayshadasweettooth.Oursweettoothhasgrownovertheyearsandpeoplearenowmoreattached1．sweetsthaneverbefore.TimRichardson,2．famoushistorian,hascreatedatimelinetoshowourloveofsweets,startingasearlyas8,000yearsBC．Hesaid,“Asweetthing3．(enjoy)duringthedaycanbeasourceofsimplecomfortandpleasurecheeringusup.Peoplehaveknownthisfor4．(century).Throughouthistory,manysweetshavekepttheircharmandpopularitybecausetheyhavekeptupwiththe5．(late)tastetrends.”Gavepaintingshavebeenfoundofourearlyancestorsattackingbeehives(蜂窩)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.第四部分寫作（共兩節(jié)）第一節(jié)短文改錯（滿分10分）28．（10分）假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌的以下作文。文中共有10處語言錯誤，每句中最多有兩處。錯誤涉及一個單詞的增加、刪除或修改。增加：在缺詞處加一個漏字符號（∧），并在其下面寫出該加的詞。刪除：把多余的詞用斜線（\）劃掉。修改：在錯的詞下劃一橫線，并在該詞下面寫出修改后的詞。注意：1、每處錯誤及其修改均僅限一詞；2、只允許修改10處，多者（從第11處起）不計分。Iwillsharewithyouatruestoryhappenedacoupleofdaysago．Oneofmyclassmateboughtabagofsnacksfromafoodstore．Afewroommatesweretheninvitedtoenjoysnacks．Unluckily,allofthemgotpoisonedandhadstomachacheswithourfacespale．Theyarequicklysenttoanearbyhospital．Doctorsexaminedthembutgavethemsomemedicine．Theywereoutofdangersoonbeforetakingthemedicine．Thisaccidentshouldmakeustorealizetheseriousnessofthefoodsafetyproblem．Istrongsuggestthatthewholesocietypaysmoreattentiontofoodsafety．第二節(jié)書面表達（滿分25分）29．（25分）假定你是李華。下學期你的表妹Jane將進入重點高中學習，她對高中生活學習充滿了期待。請給Jane寫一封郵件，內容包括：1.祝賀她將進入重點高中學習2.建議她了解高中生活學習的特點，例如校園生活豐富多彩；課程內容的不同設置……3.再次表示祝賀，提出美好祝愿。注意：1.詞數80左右2.可適當增加細節(jié)，以使行文連貫。DearJane,________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

參考答案第一部分（共20小題，每小題1.5分，滿分30分）1、B2、A3、C4、B5、A6、C7、A8、C9、C10、B11、D12、A13、A14、D15、D16、B17、D18、B19、C20、A第二部分閱讀理解（滿分40分）閱讀下列短文，從每題所給的A、B、C、D四個選項中，選出最佳選項。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(惡性的)humancells.Shesaysthecurrentwaytoidentifywhetherchemicalscausecanceristotestthemoneatatime.Thismethodleads,sheadds,toalonglistofsupposedly“safe”chemicals.Sheandherteamsaythatapproachneedstochange.“Wedefinitelyneedcertainresearch…tofindoutwhatmixturesofchemicalswouldbemoreharmfulthanothers;whatgroupsofchemicals,whentogether,wouldproducemoreharmfuleffects.Andatthemoment,thatisnotknown.”Anestimatedoneinfivecancershasbeenlinkedtochemicalexposure.Itmayturnoutthatthecancer-causingvillain(惡棍)isnotasinglechemicalatall.5、Whateffectmayonesinglechemicalhaveonusaccordingtothetext?A．Itmayletussufferfromcancer.B．Itmaynotcausedangertous.C．Itmaydestroyourbody.D．Itmayletourbodymakeachange.6、WhatcanwelearnaboutMs.Gulliver’sresearch?A．Shehasfoundreasonsforfivekindsofcancers.B．Shehasfoundthatonlyonechemicalca