山大考博英語2023-2023

2023山大考博英語2023-04-07語法詞匯題比較難，30個單選題，一個0.5分，基本上是考查詞意的完型題20個，一個0.5分，01年考研真題閱讀理解4篇，每個題1.5分，30分，都是六級和考研原題（最近兩年閱讀沒出專八題）7選5，共10分，關于奧巴馬的英譯漢五個，一個3分，長句子翻譯比較難，費得時間比較長作文20分，關于childrensurfingthenet2023山大考博英語PartIGrammarandVocabulary1.Thediscussionwassoprolongedandexhaustingthat__________thespeakersstoppedfordeferments.A.atlargeB.atintervalsC.ateaseD.atrandom2.Whentraveling,youareadvisedtotaketravelers’checks,whichprovideasecure__________tocarryingyourmoneyincash.A.substituteB.selectionC.inferenceD.alternative3.InevertrustedhimbecauseIalwaysthoughtofhimassuchacharacter.A.graciousB.suspiciousC.uniqueD.particular4.Changingfromsolidtoliquid,watertakesinheatfromallsubstancesnearit,andthis__________producesartificialcoldsurroundingit.A.absorptionB.transitionC.consumptionD.interaction5.Language,culture,andpersonalitymaybeconsidered__________ofeachotherinthought,buttheyareinseparableinfact.A.IndistinctlyB.separatelyC.irrelevantlyD.independently6.ChristmasisaChristianholydayusuallycelebratedonDecember25th__________thebirthofJesusChrist.A.inaccordancewithB.intermsofC.infavorofD.inhonorof7.Tosurviveintheintensetradecompetitionbetweencountries,wemust__________thequalitiesandvarietiesofproductswemaketotheworldmarketdemand.A.improveB.enhanceC.guaranteeD.gear8.Togiveyouageneralideaofourproducts,weenclosethecataloguesshowingvariousproductshandledbyuswithdetailed__________andmeansofpacking.A.specimensB.inspectionsC.samplesD.specifications9.Manyoftheconditionsthat__________populationpressures---overcrowding,unemployment,poverty,hungerandillness---leadtodissatisfaction.A.bringforwardB.giverisetoC.feedupwithD.resultfrom10.Arrivinganywherewiththesepossessions,hemightjustaseasily__________foramonthorayearasforasingleday.A.putupB.stayupC.speedupD.makeup11.Thefactthattheearth’ssurfaceheats__________providesaconvenientwaytodivideitintotemperatureregion.A.infrequentlyB.irregularlyC.unsteadilyD.uneverny12.Ifacatcomestooclosetoitsnest,themockingbird__________asetofactionstoprotectitsoffspring.A.hastensB.releasesC.devisesD.initiates13.Howlargeaproportionofthesalesofstoresinornearresortareascanbe__________totouristspending?A.attributedB.appliedC.contributedD.attached14.Knowledgeisacomfortableandnecessaryretreatand__________forusinanadvancedage;andifwedonotplantitwhileyoung,itwillgiveusnoshadewhenwegrowold.A.ingredientB.relianceC.shelterD.inclination15.SomepeoplewouldliketodoshoppingonSundayssincetheyexpectto__________wonderfulbargainsinthemarket.A.pickupB.bumpintoC.pileupD.bringback16.Scientistsaresearchingfortheoldesttree__________becauseitcanteachthemagreatdealaboutmanyissuesrelatedwithclimatechange.A.livelyB.aliveC.livingD.live17.ThedestructionoftheTwinTowersinNewYorkCity__________shockandangerthroughouttheworld.A.temptedB.provokedC.summonedD.enveloped18.A1994WorldBankreportconcludedthat__________girlsinschoolwasprobablythesinglemosteffectiveanti-povertypolicyinthedevelopingworldtoday.A.enrollingB.assigningC.involvingD.consenting19.TheUNofficialsaidaidprogramswillbe__________untilthereisadequateprotectionforreliefpersonnel.A.multipliedB.arrestedC.spannedD.suspended20.Despitealmostuniversal__________ofthevitalimportanceofwomen’sliteracy,educationremainsadreamformanywomeninfartoomanycountriesoftheworld.A.confessionB.identificationC.acknowledgementD.compliment21.Sincetheislandsoilhasbeenbarrenforsomanyyears,thenativesmustnow__________muchoftheirfood.A.deliverB.importC.produceD.develop22.BecauseJenkinsneither__________nordefendseithermanagementorthestrikingworkers,bothaidesadmirehisjournalisticA.criticizes...acumenB.attacks…neutralityC.confronts…aptitudeD.dismisses…flair23.Someanthropologistsclaimthatafewapshavebeentaughtarudimentarysignlanguages,butskepticsarguethattheapesareonly__________theirtrainers.A.imitatingB.condoningC.instructingD.acknowledging24.Itisironicthatthe__________insightsofthegreatthinkersarevoicedsooftenthattheyhavebecomemereA.oriinal…clichesB.banal…beliefsC.dubious…h(huán)abitsD.philosophical-questions25.Themostfrustratingperiodsofanydietaretheinevitable__________,whenweightlossifnotstops.A.moods…acceleratesB.feasts…h(huán)altsC.holidays…contractsD.plateaus…slows26.Sincetheauthor’sunflatteringreferencestoherfriendswereso__________,shewassurprisedthather__________wererecognized.A.laudatory…stylesB.obvious…anecdotesC.oblique…allusionsD.critical…eulogies27.Ifitistruethatmoralitycannotexistwithoutreligion,thendoesnottheerosionofreligionheraldthe__________ofmoraliy?A,regulationB.basisC.beliefD.collapse28.Certainanimalbehaviors,suchasmatingrituals,seemtobe__________,andthereforeexternalfactorssuchasclimatechanges,foodsupply,orthepresenceofotheranimalsofthesamespecies.A.learned…immunetoB.innate…unaffectedbyC.intricate…belongtoD.specific…confusedwith29.Shakenbytwodecadesofvirtualanarchy,themajorityofpeoplewerereadytobuy__________atanyprice.A.orderB.emancipationC.hopeD.liberty30.Asapersonwhocombinescarewith_________,Marisacompletedherdutieswith__________aswellaszeal.A.levity…resignationB.enthusiasm…meticulousnessC.vitality…willingnessD.empathy…rigorPartⅡCloseThestudyofgeneticshasgivenrisetoaprofitablenewindustrycalledbiotechnology.Asthename__31__,itcombinesbiologyandmoderntechnologythroughsuch__32__asgeneticengineering.Someofthenewbiotechcompanies,astheyarecalled,__33__inagricultureandareworkingenthusiasticallytopatent(取得專利)seedsthatgiveahighyield(產(chǎn)量),that__34__disease,droughtandfrost,andthatreducetheneedfordangerouschemicals.__35__suchgoalscouldbeachieved,itwouldbemostbeneficial.Butsomehaveraised__36__aboutgeneticallyengineeredcrops."Innature,geneticdiversity(多樣性)iscreatedwithincertainlimits,"saysthebookGeneticEngineering,FoodandOurEnvironment."Arosecanbecrossed(雜交)withadifferentkindofrose,butalosewill__37__crosswithapotato..."Geneticengineering,ontheotherhand,usuallyinvolvestakinggenesfromonespeciesandinsertingthemintoanotherinanattemptto__38__adesiredpropertyorcharacter.Thiscouldmean,__39__,selectingagenewhichleadstotheproductionofachemicalwithantifreezepropertiesfromanarcticfish,andjoiningitintoapotatoorstrawberrytomakeitfrost-resistant.Itisnowpossibleforplantstobeengineeredwithgenes__40__frombacteria,viruses,insects,animalsorevenhumans.__41__,then,biotechnologyallowshumanstobreakthegeneticwallsthat__42__species.Likethegreenrevolution,(43)whatsomecallthegenerevolution(44)contributestotheproblemofgeneticuniformity(千篇一律)–somesayevenmoreso(45)becausegeneticistscanemploytechniquessuch(46)ascloningandorganculture,processesthatproduceperfectly(47)identicalcopies,orclones.Concernsaboutthebiodiversity,therefore,remain.Geneticallyalteredplants,however,raisenew(48)issues,suchastheeffectsthattheymayhaveonusandtheenvironment.―Weareflyingblindlyintoanew(49)ofagriculturalbiotechnologywithhighhopes,fewconstraints,andlittleideaofthepotensial(50),‖saidsciencewriterJeremyRifkin.31.A.suggestsB.recallsC.concernsD.advises32.A.conceptsB.viewsC.techniquesD.courses33.A.participateB.focusC.specializeD.involve34.A.treatB.avoidC.opposeD.resist35.A.IfB.UnlessC.SinceD.As36.A.demandsB.topicsC.concernsD.lessons37.A.sometimesB.neverC.frequentlyD.eventually38.A.conveyB.transferC.selectD.collect39.A.forexampleB.foronethingC.ononehandD.inanycase40.A.resultedB.evolvedC.injectedD.taken41.A.IncontrastB.InthatC.IncaseD.Inessence42.A.separateB.formC.createD.vary43.A.whatB.whereC.asD.so44.A.combinesB.contributesCmandsD.breaks45.A.thatB.becauseC.ifD.when46.A.likeB.forexampleC.asD.is47.A.resemblingB.alikeC.similarD.identical48.A.issuesB.heightC.difficultiesD.goals49.A.spotB.eraC.deadlineD.scheme50.A.navigationsB.mysteryC.outcomesD.destinationsPartⅢReadingComprehensionPassage1TheCarnegieFoundationreportsaysthatmanycollegeshavetriedtobe―allthingstoallpeople‖.Indoingso,theyhaveincreasinglycateredtoanarrowmindedcareerismwhilefailingtocultivateaglobalvisionamongtheirstudents.Thecurrentcrisis,itcontends,doesnotderivefromalegitimatedesiretoputlearningtoproductiveends.Theproblemisthatintoomanyacademicfields,theworkhasnocontext;skills,ratherthanbeingmeans,havebecomeends.Studentsareofferedavarietyofoptionsandallowedtopicktheirwaytoadegree.Inshort,drivenbycareerism,―thenation’scollegesanduniversitiesaremoresuccessfulinprovidingcredentials(文憑)thaninprovidingaqualityeducationfortheirstudents.―Thereportconcludesthatthespecialchallengeconfrontingtheundergraduatecollegeisoneofshapinganintegratedcoreofcommonlearning.Suchacorewouldintroducestudentstoessentialknowledge,toconnectionsacrossthedisciplines,andintheend,toapplicationofknowledgetolifebeyondthecampus.―Althoughthekeytoagoodcollegeisahigh-qualityfaculty,theCarnegiestudyfoundthatmostcollegesdoverylittletoencouragegoodteaching.Infact,theydomuchtoundermineit.Asoneprofessorobserved:―Teachingisimportant,wearetold,andyetfacultyknowthatresearchandpublicationmattermost.‖Notsurprisingly,overthelasttwentyyearscollegesanduniversitieshavefailedtograduatehalfoftheirfour-yeardegreecandidates.Facultymemberswhodedicatedthemselvestoteachingsoondiscoverthattheywillnotbegrantedtenure(終身任期),promotion,orsubstantialsalaryincreases.Yet70percentofallfacultiessaytheirinterestsliemoreinteachingthaninresearch.Additionally,afrequentcomplaintamongyoungscholarsisthat―Thereispressuretopublish,althoughthereisvirtuallynointerestamongadministratorsorcolleaguesinthecontentofthepublications.‖51.Whenacollegetriestobe―allthingstoalpeople‖(Lines1-2,Para.1)itaimsto________.A)satisfytheneedsofallkindsofstudentssimultaneouslyB)focusontrainingstudentsinvariousskillsC)encouragestudentstotakeasmanycoursesaspossibleD)makelearningserveacademicratherthanproductiveends52.Bysayingthat―intoomanyacademicfields,theworkhasnocontext‖(Lines4-5,Pare.1)theauthormeansthattheteachingintheseareas________.A)ignorestheactualsituationB)isnotbasedontherightperspectiveC)onlyfocusesonanintegratedcoreofcommonlearningD)givesprioritytothecultivationofaglobalvisionamongstudents53.OneofthereasonsforthecurrentcrisisinAmericancollegesanduniversitiesisthat________.A)anarrowvocationalismhascometodominatemanycollegesB)studentsdon’thaveenoughfreedominchoosingwhattheywanttolearnC)skillsarebeingtaughtasameanstoanendD)studentsareonlyinterestedinobtainingcredentials54.Americancollegesanduniversitiesfailedtograduatehalfoftheirfour-yeardegreecandidatesbecause________.A)mostofthemlackhigh-qualityfacultiesB)theinterestsofmostfacultymemberslieinresearchC)therearenotenoughincentivesforstudentstostudyhardD)theyattachgreaterimportancetoresearchandpublicationthantoteaching55.Itcanbeinferredfromthepassagethathigh-qualitycollegeeducationcallsfor________.A)puttingacademicworkinthepropercontextB)acommitmenttostudentsandeffectiveteachingC)thepracticeofputtingleaningtoproductiveendsD)dedicationtoresearchinfrontierareasofknowledge答案51.C52.B53.A54.D55.BPassage2EndangeredSpeciesEndangeredspeciesareplantsandanimalsthatareinimmediatedangerofextinction.Extinctionisactuallyanormalprocessinthecourseofevolution.Sincetheformationoftheearth,manymorespecieshavebecomeextinctthanthoseexisttoday.Thesespeciesslowlydisappearedbecauseofchangesofclimateandtheirfailuretoadapttosuchconditionsascompetitionandpredation(捕食).Sincethe1600s,however,theprocessofextinctionhasgreatlyacceleratedasaresultofbothhumanpopulationgrowthandtechnologicalencroachment(侵犯)onnaturalecologysystems.Todaythemajorityoftheworld’senvironmentsarechangingfasterthantheabilityofmostspeciestoadapttosuchchangesthroughnaturalselection.Speciesbecomeextinctorendangeredforanumberofreasons,buttheprimarycauseisthedestructionofnaturalhabitats(棲息地).Drainageofwetlands(沼澤地),cuttingandclearingofforests,growthofcities,andhighwayanddamconstructionhaveseriouslyreducedavailablenaturalhabitats.Asthevarioussurroundingsbecomefragments,theremaininganimalpopulationscrowdintosmallerareas,causingfurtherdestructionofnaturalsurroundings.Speciesinthesesmallislands‖losecontactwithotherpopulationsoftheirownkind,thusreducingtheirgeneticvariationandmakingthemlessadaptabletoenvironmentchanges.Sincethe1600s,commercialexploitationofanimalsforfoodandotherproductshascausedmanyspeciestobecomeextinctorendangered.Introduceddiseasesandparasiteshavealsogreatlyreducedsomespecies.Pollutionisanotherimportantcauseoftheirextinction.Someprivateandgovernmentaleffortshavebeenorganizedtosavedecliningspecies.Lawsweremadeinsomecountriesintheearly1900stoprotectwildanimalsfromcommercialtradeandkilling.InternationalendeavorsareshownintheConventiononInternationalTradeinEndangeredSpecies.approvedby51nations.Itspurposeistorestrictexploitationofwildanimalsandplantsbyregulatingandrestrictingtradeincertainspecies.Howeffectivesuchlawswillbeinvariouscountries,however,dependsonenforcement(實施)andsupportbythepeopleandthecourts.Becauseofalackoflawenforcement,thewillingnessofsomesegmentsofsocietytotradeinendangeredspecies,theactivitiesofpeoplewhocatchandkillanimalsillegallyanddealerswhosupplythetrade,thefutureofmanyspeciesisindoubtinspiteoflegalprotection.56Accordingtothepassage,whichofthefollowingisthemostimportantfactorcausingtherapidextinctionofmanspeciessincethe17thcentury?AHumanbeingsarenotawareoftheimportanceofpreservingendangeredspecies.BSomeendangeredspecieshavealreadyreachedtheendoftheirlifespaninevolution.CThedevelopmentofhumansocietyhasgreatlyaffectednaturalecologysystems.DTheworld’sclimatehaschangedsogreatlythatmostspeciescannotsurvive.57Inthelastsentenceofthesecondparagraph,thewordislandsreferstoAthelandsthatarecompletelysurroundedbywater.Bthewildanimals’breedinggroundsprotectedbylawCthepiecesoflandseparatedbymodernbuildingsandroads.Dthesmallandisolatedareasinhabitedbycertainspecies.58ThispassagementionsallofthefollowingreasonsthatcausetheextinctionofmanspeciesexceptAnaturalselectionofspecies.Bvariousnaturaldisasters.Ccommercialtradeandkilling.Ddestructionofnaturalsurroundings.59Accordingtothepassage,whichofthefollowingismostimportantinsavingdecliningspecies?AGovernmentsshouldmakesomelawstoprotectendangeredspecies.BPeopleshouldpaymoreattentiontotheprotectionofnaturalsurroundings.CRelevantlawsmustbemadeandenforcedwiththesupportofthepeople.DSomeorganizationsshouldwarnpeoplenottotradeinendangeredanimals.60Howdoestheauthorfeelabouttheprospectofprotectingendangeredspeciesfrombeingextinct?AWorried.BOptimistic.CIndifferent.DConfident.Passage3Thosewhowelcomedtherailwaysawitasmorethanarapidandcomfortablemeansofpassing.Theyactuallysawitasafactorinworldpeace.Theydidnotforeseethattherailwaywouldbejustonemoremeansfortherapidmovementofaggressivearmies.Noneofthemforesawthatthemorewearetogether-themorechancesthereareofwar.Anyboyorgirlwhoisoneofalargefamilyknowsthat.Wheneveranynewinventionisputforward,thoseforitandthoseagainstitcanalwaysfindmedicalmentoapproveorcondemn.Theanti-railwaygroupproduceddoctorswhosaidthattunnelswouldbemostdangeroustopublichealth:theywouldproducecolds,catarrhs(粘膜炎)andconsumptions.Thedeafeningnoiseandtheglareoftheenginefire,wouldhaveabadeffectonthenerves.Further,beingmovedthroughtheairatahighspeedwoulddograveinjurytodelicatelungs.Inthosewithhighblood-pressure,themovementofthetrainmightproduceapoplexy(中風).Thesuddenplungingofatrainintothedarknessofatunnel,andtheequallysuddenrushintofulldaylight,wouldcausegreatdamagetoeyesight.Butthepro-railwaygroupwasofcourseabletoproduceequallyfamousmedicalmentosayjusttheopposite.Theysaidthatthespeedandswingofthetrainwouldequalizethecirculation,promotedigestion,tranquilizethenerves,andensuregoodsleep.Theactualrolling-stockwasanythingbutcomfortable.Ifitwasatestofendurancetositforfourhoursoutsideacoachinrain,orinsideindirtyair,therailwayofferedlittlemoreinthewayofcomfort.Certainlythefirst-classcarriageshadcushionedseats;butthesecond-classhadonlynarrowbareboards,whilethethird-classhadnothingatall;noseatsandnoroof;theywerejustopentrucks.Sothatthird-classpassengersgainednothingfromthefewmodeexceptspeed.Inthematterofcomfort,indeedtheylost;theydid,onthecoaches,haveaseat,butnowtheyhadtostandalltheway,whichgaveopportunitiestothecomic(滑稽的)press.Thiskindofthing:Amanwasseenyesterdaybuyingathird-classticketforthenewLondonandBirminghamRailway.Thestateofhismindisbeingenquiredinto.Awriterintheearlydaysofrailwayswrotefeelinglyofbothsecond-andthird-classcarriages.Hemadethesuggestionthatthedirectorsoftherailwaysmusthavesentallovertheworldtofindthehardestpossiblewood.Oftheopenthird-classtruckshesaidthattheyhadthepeculiarpropertyofmeetingtherainfromwhateverquarteritcame.Hedescribedthemashorizontalshower-baths,fromwhosesearchingpowertherewasnoescape.61.AllboysandgirlsinlargefamiliesknowthatA)aboyandagirlusuallyfightwhentheyaretogetherB)peopletendtobetogethermorethantheyusedtobeC)alotofpeoplebeingtogethermakesfightslikelyD)Railwayleadstheworldtopeace62.Accordingtothosewhowelcomedtherailway,therailwayitselfshouldincludeallthefollowingexcept.A)therailwayenablespeopletravelfastB)therailwaybringscomforttopeopleC)therailwaymakestheworldpeacefulD)therailwayleadstheworldtowaraswell.63.Accordingtotheanti-railwaygroup,allthefollowingsaretruebut.A)tunnelsaredangeroustopublichealthB)thenoiseandtheglareoftheenginefiremayaffectpeople'snervesC)therapidspeedthroughtheairdoesdamagetopeople'slungsD)tothosewithhighblood-pressure,therapidspeedofthetraincausesthemtodie64.Wemaysafelyconcludethat.A)theauthorbelongstotheanti-railwaygroupB)theauthorbelongstothefor-railwaygroupC)theauthorspeakshighlyoftherailwayD)theauthormaynevertaketrainbecauseofitspotentialdangers65.Whatisthetoneofthispassage?A)PracticalB)SatiricalC)HumorousD)Exaggerated答案61.C62.D63.D64.A65.CPassagePassage4TheMythofCollegeManyofyouyoungpersonsoutthereareseriouslythinkingaboutgoingtocollege.(Thatis,ofcourse,alie.Theonlythingsyouyoungpersonsthinkseriouslyaboutareloudmusicandsex.Trustme:thesearecloselyrelatedtocollege).Collegeisbasicallyabunchofroomswhereyousitforroughlytwothousandhoursandtrytomemorizethings.Thetwothousandhoursarespreadoutoverfouryears;youspendtherestofthetimesleepingandtryingtogetdates.Basically,youlearntwokindsofthingsincollege:Thingsyouneedtoknowlaterinlife(twohours).Theseincludehowtomakecollecttelephonecallsandgetbeerandcrepe-paperstainsoutofyourpajamas.Thingsyouwillnotneedtoknowinlaterlife(1,998hours).Thesearethethingsyoulearninclasseswhosenamesendin-ology,-osophy,-istry,-ics,andsoon.Theideaisyoumemorizethesethings,thenwritethemdowninlittleexambooks,thenforgetthem.Ifyoufailtoforgetthem,youbecomeaprofessorandhavetostayincollegefortherestofyourlife.It'sverydifficulttoforgeteverything.Forexample,whenIwasincollege,Ihadtomemorize-don'taskmewhy-thenamesofthemetaphysicalpoetsotherthanJohnDonne.Ihavemanagedtoforgetoneofthem,butIstillrememberthattheothertwowerenamedVaughanandCrashaw.Sometimes,whenI'mtryingtoremembersomethingimportant,likewhethermywifetoldmetogettunapackedinoilortunapackedinwater,VaughanandCrashawjustpopupinmymind,rightthereinthesupermarket.It'saterriblewasteofbraincells.Afteryou'vebeenincollegeforayearorso,you'resupposedtochooseamajor,whichisthesubjectyouintendtomemorizeandforgetthemostthingsabout.Hereisaveryimportantpieceofadvice:besuretochooseamajorthatdoesnotinvolveKnownFactsandRightAnswers.Thismeansthatyoumustnotmajorinmathematics,physics,biologyorchemistry,becausethesesubjectsinvolveactualfacts.If,forexample,youmajorinmathematics,you'regoingtowanderintoclassonedayandtheprofessorwillsay:"Definethecosineintegerofthequadrantoftherhomboidbinaryaxis,andextrapolateyourresulttofivesignificantvertices."Ifyoudon'tcomeupwithexactlytheanswertheprofessorhasinmind,youfail.Thesameistrueofchemistry:ifyouwriteinyourexambookthatcarbonandhydrogencombinetoformoak,yourprofessorwillflunkyou.Hewantsyoutocomeupwiththesameanswerheandalltheotherchemistshaveagreedon.Scientistsareextremelysnottyaboutthis.68.Whenshouldthecollegestudentschooseamajor?A.ThemomenttheygotocollegeB.AftertheyhavebeenincollegefornearlytwoyearsC.AftertheyhavebeenincollegeforayearorsoD.Whentheybecomeasenior69.Theword―flunk‖inthelastparagraphmeansA.floatB.failC.ridiculeD.dupe70.Whatisthebeattitleforthepassage?A.TheMythofCollegeB.WhatCanYouLearninCollege?C.HowtoEnjoyYourCollegeLifeD.TheImportanceofCollegePartⅣUseofLanguageThepsychologyofwarranties保單心理學Protectionracket保護之詐Ifextendedguaranteesareoverpriced,whyaretheysopopular?CUSTOMERStendtoagoniseovertherelativemeritsofdifferentmodelsofelectronicgoodssuchasdigitalcamerasorplasmatelevisions.Butwhentheygettothetill,manyspendfreelyonsomethingtheybarelythinkaboutatall:anextendedwarranty,whichisoftenmoreprofitabletotheretailerthanthedeviceitcovers.Shopperstypicallypay10-50%ofthecostofaproducttoinsureitbeyondthetermcoveredbythemanufacturer’sguarantee.71.Yetproductsrarelybreakwithintheperiodcovered,andrepairstendtocostnomorethanthewarrantyitself.72l.Sowhy,asksapaperpublishedintheDecemberissueoftheJournalofConsumerResearch,dosomanyconsumersstillbuyextendedwarranties?Theauthors—TaoChenoftheUniversityofMaryland,AjayKalraofRiceUniversityandBaohongSunofCarnegieMellonUniversity—examinedpurchasedatafromabigelectronicsretailerforover600householdsf