2025年SAT语文专项训练卷

2025年SAT语文专项训练卷考试时间：______分钟总分：______分姓名：______Section11.Therapidadvancementofartificialintelligencehassparkedconsiderabledebateregardingitsfutureimpactonthejobmarket.ProponentsarguethatAIwillprimarilyautomateroutineandrepetitivetasks,therebyfreeinghumanworkerstofocusonmorecreativeandcomplexproblem-solvingendeavors.Conversely,criticswarnthatwidespreadAIadoptioncouldleadtosignificantjobdisplacementacrossvariousindustries,potentiallyexacerbatingeconomicinequality.Thistechnologicalshiftnecessitatesacriticalexaminationofboththeopportunitiesandchallengesitpresentstotheglobalworkforce.2.Apersistentissuefacingurbanenvironmentsistrafficcongestion,whichnotonlyleadstoincreasedcommutetimesbutalsocontributestohigherlevelsofairpollution.Effortstomitigatethisproblemhaveincludedtheexpansionofpublictransportationnetworks,theimplementationofcongestionchargingschemesincitycenters,andthepromotionofcarpoolinginitiatives.Whilethesemeasureshaveshownsomeeffectiveness,thegrowingnumberofvehiclesontheroadcontinuestoposeasignificantchallengetourbanplannersandpolicymakers.3.Inrecentyears,therehasbeenagrowingbodyofscientificevidencesuggestingthatmoderateconsumptionofcertainfattyacids,particularlyomega-3sfoundinfishoil,canhavebeneficialeffectsoncardiovascularhealth.Theseessentialfatsarebelievedtohelpreducetriglyceridelevels,lowerbloodpressure,anddecreasetheriskofarrhythmias.However,theoptimaldosageandlong-termeffectsofomega-3supplementationremainsubjectsofongoingresearchanddebatewithinthemedicalcommunity.4.Thelegacyofcolonialismcontinuestoinfluencesocial,economic,andpoliticaldynamicsinmanypostcolonialnations.Whileindependencehasbroughtaboutpoliticalautonomy,thestructuralinequalitiesestablishedduringthecolonialeraoftenpersist,manifestingindisparitiesinwealth,education,andhealthcare.Addressingthesedeep-seatedissuesrequiresnotonlyeconomicdevelopmentinitiativesbutalsoeffortstoreconcilehistoricalgrievancesandpromotesocialjustice.5.Climatechangeposesanexistentialthreattonumerousecosystemsaroundtheglobe.Risingglobaltemperaturesarecausingpolaricecapstomelt,sealevelstorise,andweatherpatternstobecomemoreextreme,resultinginmorefrequentandseveredroughtsandfloods.Biodiversityisparticularlyvulnerable,withmanyspeciesfacinghabitatlossandanincreasedriskofextinction.Mitigatingtheeffectsofclimatechangedemandsurgentandcoordinatedactionfromnationsworldwidetoreducegreenhousegasemissionsandtransitiontosustainableenergysources.6.Theaccessibilityofhighereducationhasevolvedsignificantlyoverthepastseveraldecades,largelyduetotheexpansionofonlinelearningplatformsandtheincreasingavailabilityoffinancialaid.Thesedevelopmentshavemadeitpossibleforamorediversegroupofindividualstopursuedegreeswithouttheneedtorelocateorinterrupttheircareers.Despitetheseadvancements,concernspersistaboutthequalityofonlineinstructionandthepotentialforincreasedstudentdebt.7.Acompellingnarrativestructureoftenreliesonthecarefulconstructionofirony,particularlysituationalirony,tocreatehumororunderscoreatheme.Whencharactersfindthemselvesinsituationsthataretheoppositeofwhattheyexpectedordesired,theresultingdiscrepancybetweenappearanceandrealitycanprovokebothlaughteranddeeperreflection.Masterfuluseofironycanthusenhancethecomplexityandresonanceofastory.8.TheRenaissancemarkedapivotalperiodinEuropeanhistory,characterizedbyarevivalofinterestinthearts,literature,andclassicalknowledgefollowingtheMiddleAges.Thisintellectualandculturalmovement,centeredinitiallyinItaly,fosteredinnovationsinpainting,sculpture,architecture,andscience,layingthegroundworkformodernWesternthought.FiguressuchasLeonardodaVinciandMichelangeloexemplifiedtheera'sspiritofinquiryandartisticexpression.9.Socialmediaplatformshavefundamentallyalteredthewaypeoplecommunicate,shareinformation,andformcommunities.Whilethesenetworksofferunprecedentedopportunitiesforconnectionandmobilization,theyalsopresentchallengesrelatedtomisinformation,cyberbullying,andprivacyconcerns.Thepsychologicalimpactofconstantsocialcomparisonandthepotentialforalgorithmicmanipulationfurthercomplicatetheassessmentofsocialmedia'soveralleffectonindividualwell-being.10.Theprocessofphotosynthesis,bywhichplantsconvertlightenergyintochemicalenergy,isessentialforlifeonEarth.Duringphotosynthesis,chlorophyllinplantcellscapturessunlightandusesitsenergytotransformcarbondioxideandwaterintoglucoseandoxygen.Thisglucoseservesastheprimaryenergysourcefortheplant,whileoxygenisreleasedintotheatmosphere,providingtheairthatmostorganismsrelyonforrespiration.11.Inhistoricalcontexts,architecturalstylesoftenreflectthecultural,religious,andtechnologicalvaluesofthesocietiesthatcreatethem.Forexample,thegrandeurandverticalityofGothiccathedrals,characterizedbypointedarchesandflyingbuttresses,conveyedasenseofreachingtowardsthedivineandshowcasedthetechnologicaladvancementsofmedievalbuilders.Similarly,theminimalismandfunctionalityofModernistarchitecturemirroredtheera'semphasisonrationalityandindustrialprogress.12.Theglobaltradeinagriculturalproductshasreshapedfoodproductionandconsumptionpatternsacrosstheworld.Whilethissystemhasenabledtheavailabilityofawidervarietyoffoodsyear-roundinmanyregions,ithasalsoledtoconcernsaboutfoodsafety,theenvironmentalimpactoflarge-scalefarming,andthedisplacementoflocalfarmingcommunities.Debatescontinueregardingthemostsustainableandequitablemodelsforglobalfooddistribution.13.Effectiveleadershipinanyorganizationrequiresacombinationoftechnicalexpertise,interpersonalskills,andtheabilitytoinspireothers.Leaderswhocanclearlyarticulateavision,communicateeffectively,andfosteracollaborativeenvironmentaremorelikelytoachievesuccessfuloutcomes.Additionally,thecapacityforself-awarenessandadaptabilityallowsleaderstonavigatechallengesandguidetheirteamsthroughperiodsofchange.14.Thescientificmethodprovidesasystematicapproachforinvestigatingphenomena,acquiringnewknowledge,orcorrectingandintegratingpreviousknowledge.Thisprocesstypicallyinvolvesmakingobservations,formingahypothesis,conductingexperimentstotestthehypothesis,andanalyzingtheresultstodrawconclusions.Thescientificmethodisdesignedtominimizebiasandensurethatfindingsarebasedonempiricalevidenceratherthanassumptions.15.Volcaniceruptionscanhavebothdestructiveandbeneficialeffectsontheenvironment.Ontheonehand,theexplosivereleaseoflavaandashcancausewidespreaddestruction,damaginginfrastructureandposingriskstohumanlife.Ontheotherhand,volcanicactivityenrichesthesoilwithminerals,creatingfertilelandthatsupportsagriculture.Additionally,thegasesreleasedduringeruptions,suchascarbondioxideandsulfurdioxide,playrolesintheEarth'sclimatesystem.16.Thenovelservedasapowerfulmediumforexploringcomplexsocialissuesduringthe19thcentury,particularlyintheworksofauthorslikeCharlesDickensandHarrietBeecherStowe.Throughdetailedcharacterdevelopmentandnarrativedescription,thesewritersshedlightontherealitiesofpoverty,inequality,andsocialinjustice,oftenadvocatingforreform.Theirnovelsnotonlyprovidedentertainmentbutalsoplayedasignificantroleinshapingpublicopiniononcriticalsocietalmatters.17.ThedevelopmentoftheprintingpressbyJohannesGutenberginthemid-15thcenturyrevolutionizedthedisseminationofinformationinEurope.Byenablingthemassproductionofbooksandotherprintedmaterials,theprintingpressmadeknowledgemoreaccessibletoabroaderaudience,fosteringthespreadofliteracyandcontributingtotheRenaissanceandtheReformation.Thistechnologicalinnovationfundamentallyalteredtheintellectuallandscapeofthetime.18.Waterscarcityisanincreasinglypressingissueinmanyregionsoftheworld,drivenbyfactorssuchaspopulationgrowth,climatechange,andunsustainablewatermanagementpractices.Theconsequencesofwatershortagesincludereducedagriculturalproductivity,strainedwaterresourcesfordomesticandindustrialuse,andnegativeimpactsonpublichealth.Addressingthischallengerequirestheimplementationofconservationmeasures,thedevelopmentofnewwatersources,andthepromotionofequitablewaterdistributionpolicies.19.Theconceptofculturalrelativismpositsthatasociety'sbeliefs,values,andpracticesshouldbeunderstoodwithinthecontextofitsowncultureratherthanbeingjudgedbythestandardsofanotherculture.Thisperspectiveencouragesempathyandopen-mindednesswhencomparingdifferentculturesandpromotesamorenuancedunderstandingofhumandiversity.However,criticsarguethatculturalrelativismcanbeusedtojustifypracticesthatareethicallyproblematicfromauniversalstandpoint.20.Theexplorationofouterspacehasexpandedhumanknowledgeandpushedtheboundariesoftechnologicalinnovation.MissionstotheMoon,Mars,andbeyondhaveprovidedvaluableinsightsintotheoriginsoftheuniverseandthepotentialforlifeelsewhere.Whilespaceexplorationisexpensiveandfacesnumeroustechnicalchallenges,itcontinuestoinspirenewgenerationsofscientistsandengineersandcontributestoadvancementsthatoftenhaveapplicationsonEarth.Section221.Inthesentencefragment"Runningquickly,theleavesdancedinthewind,"thephrase"Runningquickly"lacksamainverbandcannotstandaloneasacompletesentence.Tocorrectthisfragment,amainverbmustbeadded,suchas"Runningquickly,theleaves*moved*inthewind,"orthefragmentcanbecombinedwithanotherclausetoformacompletesentence.22.Thesentence"Sheisreadingabookonquantumphysics,whichisveryfascinating"containsacommasplice,asitjoinstwoindependentclauseswithonlyacomma.Thiserrorcanbefixedbyusingasemicolontoseparatetheclauses("Sheisreadingabookonquantumphysics;itisveryfascinating")orbycreatingtwoseparatesentences("Sheisreadingabookonquantumphysics.Itisveryfascinating").23.Thefollowingsentencecontainsanerrorinsubject-verbagreement:"Theteamofresearchers,aswellastheirdirector,arepresentingtheirfindingstomorrow."Thesubjectofthesentenceis"Theteamofresearchers,"whichisasingularentity,andthereforetheverbshouldbe"is"ratherthan"are."Thecorrectversionwouldbe:"Theteamofresearchers,aswellastheirdirector,*is*presentingtheirfindingstomorrow."24.Thephrase"Thecat,whichissleepingonthecouch,isverytired"isgrammaticallycorrect.Therelativeclause"whichissleepingonthecouch"isproperlysetoffbycommasandclearlymodifies"Thecat."Thesentencecorrectlyusesarelativepronoun("which")tointroducetheclauseandmaintainspropersubject-verbagreementwithintheclause.25.Thesentence"Ifitrainstomorrow,wewillcancelthepicnic,whichwillbeashame"containsacommasplice.Thephrase"whichwillbeashame"isanonrestrictiverelativeclausethatprovidesadditionalinformationabout"thepicnic."However,itshouldbesetoffbycommas,andthesentenceshouldberestructuredtoavoidjoiningtwoindependentclauseswithonlyacomma.Acorrectedversioncouldbe:"Ifitrainstomorrow,wewillcancelthepicnic.Itwillbeashame."26.Inthesentence"Hehasgonetothestore,butheforgottobuymilk,"theuseofthecoordinatingconjunction"but"tojointwoindependentclausesiscorrect.Thesentenceisgrammaticallysoundandclearlyexpressesacontrastbetweentwoideas.27.Thesentencefragment"Havingfinishedtheassignment,shefeltasenseofaccomplishment"isaparticipialphrasethatlacksamainclausetowhichitcanattach.Whileparticipialphrasescanbeusedcorrectlyatthebeginningofasentenceiftheyarefollowedbyamainclause,inthiscase,thephrasestandsalone.Tocorrectthis,amainclausemustbeadded,suchas"Havingfinishedtheassignment,shefeltasenseofaccomplishment."28.Thefollowingsentencecontainsanerrorintheuseofacomma:"Thestudents,whoarepreparingfortheexam,willstudyallnight."Therelativeclause"whoarepreparingfortheexam"isnonrestrictiveandshouldbesetoffbycommas.Thesentenceisotherwisegrammaticallycorrect.However,iftheclausewererestrictive(essentialtothemeaningof"Thestudents"),nocommaswouldbeneeded:"Thestudentswhoarepreparingfortheexamwillstudyallnight."29.Thesentence"Althoughtheprojectwasdifficult,theycompleteditontime"isgrammaticallycorrect.Thesentenceproperlyusesthesubordinatingconjunction"Although"tointroduceadependentclauseandmaintainssubject-verbagreementthroughout.30.Thephrase"Thebook,publishedin1998,waswrittenbyarenownedauthor"isgrammaticallycorrect.Thenonrestrictiverelativeclause"publishedin1998"isproperlysetoffbycommasandprovidesadditionalinformationabout"Thebook."Theuseoftherelativepronoun"which"isunnecessaryheresincetheclauseisnonrestrictive.31.Thesentence"Sheistheonlypersonwhohaseverfinishedthemarathonunderfourhours."Thissentenceisgrammaticallycorrect.Therelativepronoun"who"isusedtointroducearestrictiveclause,whichisessentialtothemeaningof"theonlyperson."Nocommasareneededbecausetheclauseisrestrictive.32.Thesentence"Thecommittee,whichincludesmembersfromvariousdepartments,isresponsibleformakingfinaldecisions."Thissentenceisgrammaticallycorrect.Therelativeclause"whichincludesmembersfromvariousdepartments"isnonrestrictiveandprovidesadditionalinformationabout"Thecommittee."Theclauseisproperlysetoffbycommas.33.Thesentence"Hehasbeenworkingonthisproblemsincehearrivedhere"isgrammaticallycorrect.Thepresentperfecttense"hasbeenworking"isusedappropriatelytoindicateanactionthatstartedinthepastandcontinuestothepresent.Theadverb"since"correctlyintroducesthestartingpointoftheaction.34.Thesentence"IfIhadknownyouwerecoming,Iwouldhavebakedacake"containsagrammaticalstructureknownasaconditionalsentencetype3(hypotheticalsituationinthepast).Thestructureiscorrect,usingthepastperfecttense("hadknown")inthe"if"clauseandtheconditionalperfecttense("wouldhavebaked")inthemainclausetoexpressapasthypotheticalsituation.35.Thefollowingsentencecontainsanerrorinverbform:"Shedidnotrealizethatshehadlostherkeys."Theverb"didnotrealize"isinthepasttense,but"hadlost"isinthepastperfecttense.Whilethepastperfecttenseiscorrect,thesentenceaswrittenisawkward.Amorenaturalphrasingwouldbe:"Shedidnotrealizethatshe*had*lostherkeys,"usingthepastperfecttensewithinthedirectobjectclause.36.Thesentence"Thedogthatbitthemailcarrierisnowinthepound."Thissentenceisgrammaticallycorrect.Therelativepronoun"that"isusedtointroducearestrictiveclause,whichisessentialtothemeaningof"Thedog."Nocommasareneededbecausetheclauseisrestrictive.37.Thephrase"Theman,whoiswearingahat,ismyuncle"containsanerror.Thephrase"whoiswearingahat"isnonrestrictiveandshouldbesetoffbycommas.However,thesentencestructureisawkwardbecausetherelativeclauseisplacedbetweenthesubjectandtheverbofthemainclause.Amorenaturalphrasingwouldbe:"Theman,whoiswearingahat,*is*myuncle,"or"Myuncle,whoiswearingahat,ismyuncle."38.Thesentence"TheyareplanningtotraveltoEuropenextsummer,whichtheyhavebeenlookingforwardtoformonths."Thissentenceisgrammaticallycorrect.Thenonrestrictiverelativeclause"whichtheyhavebeenlookingforwardtoformonths"isproperlysetoffbycommasandprovidesadditionalinformationabout"thetriptoEurope."Theuseoftherelativepronoun"which"isappropriateforanonrestrictiveclause.39.Thesentence"Ifitweretoraintomorrow,wewouldcancelthepicnic,whichwouldbeashame."Thissentencecontainsagrammaticalerror.Thephrase"whichwouldbeashame"isanonrestrictiverelativeclausethatshouldbesetoffbycommas.However,thesentencestructureisincorrectforasecondconditional(hypotheticalsituationinthefuture).Thecorrectstructurewouldbe:"Ifit*were*toraintomorrow,wewouldcancelthepicnic.Itwouldbeashame."Alternatively,iftheintentionistouseafirstconditional(realpossibility),itwouldbe:"Ifit*rains*tomorrow,wewillcancelthepicnic,whichwouldbeashame."40.Thesentence"ThebookthatyourecommendedisevenmoreinterestingthanIthought."Thissentenceisgrammaticallycorrect.Therelativepronoun"that"isusedtointroducearestrictiveclause,whichisessentialtothemeaningof"Thebook."Nocommasareneededbecausetheclauseisrestrictive.试卷答案1.D2.B3.C4.A5.E6.D7.F8.G9.H10.I11.J12.K13.L14.M15.N16.O17.P18.Q19.R20.S21.B22.A23.C24.D25.E26.F27.G28.H29.I30.J31.K32.L33.M34.N35.O36.P37.Q38.R39.S40.T解析思路1.D选项“conversely”与原文第二句“Conversely,criticswarnthat...”中的“Conversely”意思一致，表示转折，引出批评者的观点。其他选项词义不符。2.B选项“expansion”与原文第二句“Effortstomitigatethisproblemhaveincludedtheexpansionofpublictransportationnetworks”中的“expansion”意思一致，表示扩展、扩张。其他选项词义不符。3.C选项“beneficial”与原文第三句“...canhavebeneficialeffectsoncardiovascularhealth”中的“beneficial”意思一致，表示有益的。其他选项词义不符。4.A选项“legacy”与原文第四句“Thelegacyofcolonialismcontinuestoinfluence...”中的“legacy”意思一致，表示遗产、传统。其他选项词义不符。5.E选项“existential”与原文第五句“climatechangeposesanexistentialthreattonumerousecosystems”中的“existential”意思一致，表示生存的、关乎存在的。其他选项词义不符。6.D选项“accessibility”与原文第六句“Theaccessibilityofhighereducationhasevolvedsignificantly...”中的“accessibility”意思一致，表示可及性、易得性。其他选项词义不符。7.F选项“compelling”与原文第七句“Acompellingnarrativestructureoftenrelieson...”中的“compelling”意思一致，表示引人入胜的、有说服力的。其他选项词义不符。8.G选项“pivotal”与原文第八句“TheRenaissancemarkedapivotalperiodinEuropeanhistory”中的“pivotal”意思一致，表示关键的、重要的。其他选项词义不符。9.H选项“fundamentally”与原文第九句“Socialmediaplatformshavefundamentallyalteredthewaypeoplecommunicate”中的“fundamentally”意思一致，表示根本地、基本上。其他选项词义不符。10.I选项“photosynthesis”与原文第十句“Theprocessofphotosynthesis,bywhichplantsconvertlightenergyintochemicalenergy”中的“photosynthesis”意思一致，表示光合作用。其他选项词义不符。11.J选项“historicalcontexts”与原文第十一句“Inhistoricalcontexts,architecturalstylesoftenreflectthecultural,religious,andtechnologicalvaluesofthesocietiesthatcreatethem”中的“historicalcontexts”意思一致，表示历史背景。其他选项词义不符。12.K选项“globaltrade”与原文第十二句“Theglobaltradeinagriculturalproductshasreshapedfoodproductionandconsumptionpatterns”中的“globaltrade”意思一致，表示全球贸易。其他选项词义不符。13.L选项“combination”与原文第十三句“Effectiveleadershipinanyorganizationrequiresacombinationoftechnicalexpertise,interpersonalskills,andtheabilitytoinspireothers”中的“combination”意思一致，表示结合、组合。其他选项词义不符。14.M选项“systematicapproach”与原文第十四句“Thescientificmethodprovidesasystematicapproachforinvestigatingphenomena”中的“systematicapproach”意思一致，表示系统的方法。其他选项词义不符。15.N选项“destructive”与原文第十五句“Volcaniceruptionscanhavebothdestructiveandbeneficialeffectsontheenvironment”中的“destructive”意思一致，表示破坏性的。其他选项词义不符。16.O选项“exploring”与原文第十六句“Thenovelservedasapowerfulmediumforexploringcomplexsocialissuesduringthe19thcentury”中的“exploring”意思一致，表示探索。其他选项词义不符。17.P选项“development”与原文第十七句“ThedevelopmentoftheprintingpressbyJohannesGutenberginthemid-15thcenturyrevolutionizedthedisseminationofinformation”中的“development”意思一致，表示发展、发明。其他选项词义不符。18.Q选项“Waterscarcity”与原文第十八句“Waterscarcityisanincreasinglypressingissueinmanyregionsoftheworld”中的“Waterscarcity”意思一致，表示水资源稀缺。其他选项词义不符。19.R选项“culturalrelativism”与原文第十九句“Theconceptofculturalrelativismpositsthatasociety'sbeliefs,values,andpracticesshouldbeunderstoodwithinthecontextofitsownculture”中的“culturalrelativism”意思一致，表示文化相对主义。其他选项词义不符。20.S选项“exploration”与原文第二十句“Theexplorationofouterspacehasexpandedhumanknowledgeandpushedtheboundariesoftechnologicalinnovation”中的“exploration”意思一致，表示探索。其他选项词义不符。21.B句子“Runningquickly,theleavesdancedinthewind”缺少主句谓语动词，是一个句子片段。选项B“Runningquickly,theleaves*moved*inthewind”通过添加谓语动词“moved”构成了完整句子，修正了错误。22.A句子“Thestudents,whoarepreparingfortheexam,willstudyallnight”通过逗号连接了两个独立句子（主句“Thestudentswillstudyallnight”和从句“whoarepreparingfortheexam”），构成了逗号拼接错误。选项A“*Thestudentsarepreparingfortheexam;theywillstudyallnight*”通过使用分号将两个独立句子正确分隔开，修正了错误。23.C句子“Theteamofresearchers,aswellastheirdirector,arepresentingtheirfindingstomorrow”中，主语是“teamofresearchers”，视为单数，谓语动词应为单数形式“is”。选项C“Theteamofresearchers,aswellastheirdirector,*is*presentingtheirfindingstomorrow”修正了主谓不一致的错误。24.D句子“Thecat,whichissleepingonthecouch,isverytired”中，“whichissleepingonthecouch”是一个非限制性定语从句，用逗号隔开，修饰“thecat”，句子结构正确。选项D表示此句子语法正确。25.E句子“ifitrainstomorrow,wewillcancelthepicnic,whichwillbeashame”中，逗号连接了两个独立句子（主句“wewillcancelthepicnic”和从句“whichwillbeashame”），构成了逗号拼接错误。“whichwillbeashame”是一个非限制性定语从句，应加逗号。选项E“*Ifitrainstomorrow,wewillcancelthepicnic.Itwillbeashame*”通过句号将两个句子分开，修正了错误。26.F句子“Hehasgonetothestore,butheforgottobuymilk”使用连词“but”正确连接了两个独立句子，句子结构正确。选项F表示此句子语法正确。27.G句子“Havingfinishedtheassignment,shefeltasenseofaccomplishment”是一个分词短语，缺少主句，是一个句子片段。选项G“*Havingfinishedtheassignment,she*felt*asenseofaccomplishment*”通过添加主句谓语动词“felt”，构成了完整句子，修正了错误。28.H句子“Thestudents,whoarepreparingfortheexam,willstudyallnight”中，“whoarepreparingfortheexam”是一个非限制性定语从句，用逗号隔开是正确的。选项H表示此句子语法正确（尽管句子本身可以简化，但语法结构无误）。29.I句子“Althoughtheprojectwasdifficult,theycompleteditontime”使用连词“Although”引导让步状语从句，主句“theycompleteditontime”结构完整，句子语法正确。选项I表示此句子语法正确。30.J句子“Thebook,publishedin1998,waswrittenbyarenownedauthor”中，“publishedin1998”是一个非限制性定语短语，用逗号隔开是正确的。选项J表示此句子语法正确。31.K句子“Sheistheonlypersonwhohaseverfinishedthemarathonunderfourhours”中，“whohaseverfinished...”是一个限制性定语从句，修饰“theonlyperson”，句子结构正确，不需要逗号。选项K表示此句子语法正确。32.L句子“Thecommitt