2018年12月四级真题第三套

2018年12月大学英语四级考试真题（第3套）PartIWriting(30minutes)Directions:Forthispart,youareallowed30minutestowriteashortessayonthechallengesofstartingacareeraftergraduation.Youshouldwriteatleast120wordsbutnomorethan180words._________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________PartIIListeningComprehension(25minutes)说明：由于2018年12月四级考试全国共考了2套听力，本套真题听力与前2套内容完全一样，只是顺序不一样，因此在本套真题中不再重复出现。PartⅢReadingComprehension(40minutes)SectionADirections:Inthissection,thereisapassagewithtenblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinthebankisidentifiedbyaletter.PleasemarkthecorrespondingletterforeachitemonAnswerSheet2withasinglelinethroughthecentre.Youmaynotuseanyofthewordsinthebankmorethanonce.Questions26to35arebasedonthefollowingpassage.Afewmonthsago,Iwasdownwithaterriblecoldwhichendedinapersistentbadcough.Nomatterhowmanydifferent26Itried,Istillcouldn’tgetridofthecough.Notonlydidit27myteachingbutalsomylifeasawhole.Thenonedayafterclass,astudentcameuptomeand28traditionalChinesemedicine.Fromherdescription,Chinesemedicinesoundedasifithadmagicpowerthatworkedwonders.Iwas29becauseIknewsolittleaboutitandhaveneveritbefore.Eventually,mycoughgotsomuch30thatIcouldn’tsleepatnight,soIdecidedtogiveitatry.TheChinesedoctortookmypulseandaskedtoseemytongue,bothofwhichwerenew31tomebecausetheyarebothnon-existentinWesternmedicine.Thenthedoctorgavemeascraping（刮）treatmentknownas“GuaSha”.Iwasalittle32atfirstbecauseheusedasmoothedgedtooltoscrapetheskinonmyneckandshoulders.Afewminuteslater,the33strokesstartedtoproducearelievingeffectandmybodyandmindbeganto34deeperintorelaxation.Ididn’tfeelanyimprovementinmyconditioninthefirstcoupleofdays,butafterafewmoreregularvisitstothedoctor,mycoughstartedto35.Then,withinamatterofweeks,itwascompletelygone!A)deepenI)remediesB)experiencesJ)scaredC)hesitantD)inconvenienceK)sensitiveE)lessenL)sinkF)licensesM)temporaryG)pressuredN)trembleH)recommendedO)worseSectionBDirections:Inthissection,youaregoingtoreadapassagewithtenstatementsattachedtoit.Eachstatementcontainsinformationgiveninoneoftheparagraphs.Identifytheparagraphfromwhichtheinformationisderived.Youmaychooseaparagraphmorethanonce.Eachparagraphismarkedwithaletter.AnswerthequestionsbymarkingthecorrespondingletteronAnswerSheet2.HowaPoor,AbandonedParisianBoyBecameaTopChefA)Whenyoudropapieceoffoodonthefloor,isitreallyOKtoeatifyoupickitupwithinfiveseconds?Anurbanfoodmythcontendsthatiffoodspendsjustafewsecondsonthefloor,dirtandgermswon’thavemuchofachancetocontaminateit.Researchinmylabhasfocusedonhowfoodbecomescontaminated,andwe’vedonesomeworkonthisparticularpieceofwisdom.B)Whilethe“five-secondrule”mightnotseemlikethemostpressingissueforfoodscientiststogettothebottomof,it’sstillworthinvestigatingfoodmythslikethisonebecausetheyshapeourbeliefsaboutwhenfoodissafetoeat.C)Soisfivesecondsonthefloorthecriticalthreshold（门槛）thatseparatesapieceofeatablefoodfromacaseoffoodpoisoning?It’sabitmorecomplicatedthanthat.Itdependsonjusthowmanybacteriacanmakeitfromfloortofoodinafewsecondsandjusthowdirtytheflooris.D)WonderingiffoodisstillOKtoeatafterit’sdroppedonthefloorisaprettycommonexperience.Andit’sprobablynotanewoneeither.Awell-known,butinaccurate,storyaboutJuliaChildmayhavecontributedtothisfoodmyth.Someviewersofhercookingshow,TheFrenchChef,insisttheysawChilddroplambonthefloorandpickitup,withtheadvicethatiftheywerealoneinthekitchen,theirguestswouldneverknow.E)Infactitwasapotatopancake,anditfellonthestovetop,notonthefloor.Childputitbackinthepan,saying,“Butyoucanalwayspickitupandifyou’realoneinthekitchen,who’sgoingtoseeit?”Butthemisrememberedstorypersists.It’shardertopindowntheoriginsoftheoft-quotedfive-secondrule,buta2003studyreportedthat70%ofwomenand56%ofmensurveyedwerefamiliarwiththefive-secondruleandthatwomenweremorelikelythanmentoeatfoodthathaddroppedonthefloor.F)Sowhatdoessciencetellusaboutwhatafewmomentsonthefloormeansforthesafetyofyourfood?Theearliestresearchreportonthefive-secondruleisattributedtoJillianClarke,ahighschoolstudentparticipatinginaresearchprojectattheUniversityofIllinois.Clarkeandhercolleaguesintroducedbacteriatofloortiles（瓷砖）andthenplacedcookiesonthetilesforvaryingtimes.Theyreportedbacteriaweretransferredfromthetilestothecookieswithinfiveseconds,butdidn’treportthespecificamountofbacteriathatmadeitfromthetilestothefood.G)Buthowmanybacteriaactuallytransferinfiveseconds?In2007,mylabatClemsonUniversitypublishedastudyintheJournalofAppliedMicrobiology.Wewantedtoknowifthelengthoftimefoodisincontactwithacontaminatedsurfaceaffectedtherateoftransferofbacteriatothefood.Tofindout,weintroducedbacteriatosquaresoftile,carpetorwood.Fiveminutesafterthat,weplacedeitherbaconorbreadonthesurfacefor5,30or60seconds,andthenmeasuredthenumberofbac