托福2026试题及答案深度剖析

托福2026试题及答案深度剖析考试时间：______分钟总分：______分姓名：______ReadingSectionPassage1Thephenomenonofcoralbleachinghasemergedasoneofthemostpressingecologicalcrisesofthe21stcentury.Coralreefs,oftentermedthe"rainforestsofthesea,"supportapproximately25%ofallmarinelifedespitecoveringlessthan1%oftheoceanfloor.Bleachingoccurswhencoralsarestressedbychangesinconditionssuchastemperature,light,ornutrition.Inresponse,coralsexpelthesymbioticalgae,zooxanthellae,thatliveintheirtissues,turningthecoralwhite.Whilebleachedcoralsarenotdead,theyarehighlyvulnerabletodiseaseandstarvation.Theprimarydriverofmodernbleachingisrisingseasurfacetemperatures.ElNiñoeventsandlong-termclimatechangehavecausedoceantemperaturestospike,causingthermalstressthatdisruptsthephotosyntheticprocessesofthezooxanthellae.Whenthesealgaeareexpelled,thecorallosesitsprimarysourceofenergy,whichisderivedfromphotosynthesis,anditsvibrantpigmentation.Withoutthealgae,thecoralskeletonisexposed,makingitsusceptibletosecondaryinfectionsbypathogens.Recoveryfrombleachingispossibleifconditionsremainstable.However,thefrequencyofbleachingeventshasincreasedtothepointwhererecoveryperiodsareoftentooshort.ScientistshaveobservedthatreefsintheCaribbeanhaveexperiencedbleachingeventseveryfewyears,whichhasledtoasignificantdeclineinbiodiversity.Additionally,oceanacidification,causedbyincreasedcarbondioxideabsorption,exacerbatestheproblembyweakeningthecoral'scalciumcarbonateskeleton,makingithardertogrowandrepair.Questions1-41.Whatisthemaintopicofthepassage?A.TheeconomicvalueofcoralreefsforthefishingindustryB.ThebiologicalprocessofcoralbleachinganditscausesC.ThehistoryofcoralreefexplorationinthePacificOceanD.Thedifferencesbetweenbleachedandhealthycoralspecies2.Accordingtothepassage,whydocoralsturnwhiteduringbleaching?A.ThecoralexpelsitssymbioticalgaeduetothermalstressB.ThecoralskeletonreflectslightdifferentlywhenstressedC.ThezooxanthellaechangetheirpigmentationtoadapttoheatD.Thecoralabsorbslesslight,causingalackofcoloration3.Theword"exacerbates"inthepassageisclosestinmeaningtoA.alleviatesB.worsensC.clarifiesD.prevents4.Whichofthefollowingcanbeinferredfromthepassageabouttherecoveryofcoralreefs?A.RecoveryisimpossibleonceareefhasbleachedB.RecoverydependsonthestabilityofenvironmentalconditionsC.Bleachedreefsarejustashealthyasnon-bleachedreefsD.RecoverytakeslongerintheCaribbeanthaninotherregionsQuestions5-6Choosethecorrectanswerfromtheboxandfillintheblanks.A.AlgaeB.CalciumcarbonateC.PhotosynthesisD.Thermalstress5.Thecoralskeletonismadeof6.ThezooxanthellaeprovideenergythroughPassage2Theformationofplanetsisacomplexprocessthathasfascinatedastronomersforcenturies.Theleadingtheory,theNebularHypothesis,suggeststhatplanetsformfromthesamecloudofgasanddustthatgaverisetothestararoundwhichtheyorbit.Asthismolecularcloudcollapsedunderitsowngravity,itbegantospin,flatteningintoaprotoplanetarydisk.Withinthisdisk,particlescollidedandstucktogether,graduallygrowingintoplanetesimals,andeventuallyintoprotoplanets.However,theNebularHypothesisfaceschallengesinexplainingthestructureofoursolarsystem.Forinstance,whyarethegasgiants,suchasJupiter,locatedsofarfromtheSun,whiletheterrestrialplanetsareclose?Acompetingtheory,theGrandTackHypothesis,proposesthatJupitermigratedinwardearlyinthesolarsystem'shistory.Accordingtothistheory,Jupiter’simmensegravitydisruptedtheorbitsofotherbodies,scatteringtheminwardandpushingMarstobesmallerthanEarth.Recentobservationsofexoplanetshaveprovidednewsupportformigrationtheories.Astronomershavediscovered"hotJupiters"—gasgiantsthatorbitveryclosetotheirstars.Theseplanetscouldnothaveformedatsuchclosedistancesbecausetheintenseheatwouldhavepreventedgasfromcondensing.Therefore,theymusthavemigratedfromfurtheroutinthesystem.Thissupportstheideathatplanetarymigrationisacommonfeatureofplanetarysystemformation,ratherthanauniqueanomaly.Questions7-107.Whatisthemainideaofthepassage?A.TheNebularHypothesisistheonlytheorythatexplainsplanetformationB.PlanetarymigrationisnowconsideredacommonfeatureofsolarsystemsC.GasgiantsareincapableofformingclosetotheirstarsD.TheNebularHypothesishasbeencompletelydisprovenbyrecentdata8.Accordingtothepassage,whatroledidJupiterplayintheearlysolarsystemaccordingtotheGrandTackHypothesis?A.ItpreventedtheformationofMarsB.ItcausedthesolarsystemtoflattenintoadiskC.ItscatteredsmallerbodiesinwardandpushedMarstobesmallD.Itcollidedwiththeprotosunandwasdestroyed9.Theword"anomaly"inthepassagereferstoaA.commonoccurrenceB.strangeorunusualoccurrenceC.scientifictheoryD.distantplanet10.Whichofthefollowingstatementsistruebasedonthepassage?A.HotJupitersformedattheircurrentlocationsB.TheNebularHypothesiscannotexplainthedistanceofgasgiantsC.PlanetesimalsaresmallerthanprotoplanetsD.TheGrandTackHypothesisissupportedbythediscoveryofhotJupitersPassage3TheSilkRoadwasnotasingleroad,butanetworkoftraderoutesconnectingtheEastandWest.Itwasaconduitfortheexchangeofgoods,ideas,religions,andtechnologies.WhilemostpeopleassociatetheSilkRoadwiththetradeofsilk,therealitywasfarmorediverse.Chinesemerchantsexportedsilk,ceramics,andpaper,whilegoodsfromtheWestincludedglassware,preciousmetals,andspices.However,thetruevalueoftheSilkRoadlayinthetransferofcultureandknowledge.OneofthemostsignificantexchangeswasthespreadofBuddhism.Missionariestraveledalongtheseroutes,spreadingBuddhistphilosophyfromIndiatoChinaandbeyond.Alongwithreligioncameartandarchitecture;Gandharaart,ablendofIndianandHellenisticstyles,flourishedinCentralAsia.Thisculturaldiffusionwasatwo-waystreet,asChineseinnovationssuchasgunpowder,thecompass,andprintingtechnologyeventuallymadetheirwaytoEurope,influencingthecourseofhistory.ThedeclineoftheSilkRoadisoftenattributedtotheriseofmaritimetraderoutesinthe15thcentury.AsEuropeannationsdevelopedbettershipsandnavigationtechniques,seatravelbecamesaferandfasterthantheoverlandroutes.Additionally,politicalinstabilityalongtheoverlandpaths,suchastheMongolconquestsandtheriseoftheOttomanEmpire,madetradedangerousandexpensive.Consequently,theSilkRoadgraduallyfellintoobscurity,thoughitremainsasymbolofglobalinterconnectedness.Questions11-1411.Theword"conduit"inthepassageisclosestinmeaningtoA.barrierB.sourceC.pathwayD.obstacle12.Accordingtothepassage,whatwastheprimaryvalueoftheSilkRoad?A.ThetradeofsilkfabricB.TheexchangeofcultureandknowledgeC.ThespreadoftheOttomanEmpireD.Theinventionofthecompass13.WhichofthefollowingisNOTmentionedinthepassageasafactorleadingtothedeclineoftheSilkRoad?A.TheriseofmaritimetraderoutesB.PoliticalinstabilityC.TheinventionofpapermakingD.TheriseoftheOttomanEmpire14.TheauthormentionsgunpowderandthecompassinordertoA.listluxurygoodstradedbyChinesemerchantsB.showtheimpactofChinesetechnologyonEuropeC.explainthedeclineoftheSilkRoadD.compareEuropeanandChineseinnovationsListeningSectionConversation1Student:ProfessorBaker,Iwashopingtoaskyouabouttheresearchprojectforthesociologyclass.Professor:HiSarah.I’mgladyoucameby.What’sonyourmind?Student:Well,I’mreallyinterestedinthetopicofremotework,butI’mstrugglingtonarrowitdown.There’ssomuchdataoutthere.Doyouhaveanysuggestionsonaspecificangle?Professor:Remoteworkisagreattopic.Thekeyistofindaspecificproblemwithinthebroadertrend.Haveyouconsideredlookingattheimpactofremoteworkonurbanplanning?Student:Urbanplanning?That’sinteresting.Ihadn’tthoughtofthat.Professor:Yes.Thinkaboutit.Ifpeoplestopcommuting,whathappenstodowntownofficebuildings?Dotheybecomeresidentialspaces?Ordotheyjustsitempty?That’sastructuralchangethataffectstheeconomyandtheenvironment.Student:Thatmakesalotofsense.So,Icouldfocusonthetransformationofcommercialrealestate.Professor:Exactly.Oryoucouldlookatthesocialaspect—howremoteworkaffectstheconceptofcommunityinneighborhoods.Justmakesureyouhaveaclearthesisstatementbynextweek.Questions15-1615.Whydoesthestudentvisittheprofessor?A.ToaskforanextensionontheresearchprojectB.TogethelpnarrowingdownaresearchtopicC.TodiscussthegradingcriteriafortheclassD.Toproposeanewtopicforthefinalexam16.Whatspecifictopicdoestheprofessorsuggesttothestudent?A.ThehistoryofurbanplanningB.TheimpactofremoteworkoncommercialrealestateC.ThesocialeffectsofremoteworkonneighborhoodsD.Theeconomicdeclineofdowntownareas17.Whatistheprofessor’sattitudetowardthestudent’sinitialidea?A.Hethinksitistoobroad.B.Hethinksitistoonarrow.C.Hethinksitisperfectasis.D.Hethinksitisunrelatedtothecourse.Conversation2Student:Hi,Mr.Thompson.Iwaslookingattheschedulefortheupcomingsemester,andInoticedthattheastronomylabisscheduledforTuesdayafternoons.Isthatcorrect?Mr.Thompson:Yes,thatistheplan.Thelabsareessentialforunderstandingtheconceptswediscussinlectures.Student:IhaveaconflictwithTuesdayafternoons.Ihaveapart-timejobthatIcan’tchange.IsthereanywayIcouldswitchtotheFridaysection?Mr.Thompson:Letmecheck...TheFridaysectionisalreadyfull.Thelabcapacityislimitedduetotheequipment.However,IcanseeifthereisanopeningintheMondayeveningsection.Thatmightworkforyou.Student:Thatwouldbegreat.IhaveaclassonMondaymornings,butI’musuallyfreeintheevening.Mr.Thompson:Okay,IwillputyournameonthewaitinglistforMonday.Ifsomeonedropsout,I’llemailyou.Justmakesureyoucheckyouremailtonight.Questions18-1918.Whydoesthestudentwanttoswitchsections?A.TheTuesdaysectionistooexpensive.B.TheTuesdaysectionisalreadyfull.C.ThestudenthasaconflictwiththeTuesdaytimeslot.D.ThestudentpreferstoworkonFridays.19.Whatsolutiondoestheprofessoroffertothestudent?A.ToletthestudentswitchtotheFridaysectionifspaceopensup.B.Tochangethestudent'sworkscheduletoaccommodatetheTuesdaylab.C.ToaddaMondaymorninglabsection.D.ToputthestudentonawaitinglistfortheMondayeveningsection.Lecture1Now,let’smoveontothepsychologylecture.Todaywe’regoingtodiscussafascinatingconceptinmemorystudiesknownasthe"Tip-of-the-Tongue"state.You’veprobablyexperiencedthisbefore:youaretryingtorecallaperson’snameoraword,andyoufeellikeitisrightthereonthetipofyourtongue,butyoujustcan'taccessit.Psychologistshavestudiedthisphenomenonextensively.Onetheorysuggeststhatthisstateoccursbecauseof"blocking."Blockinghappenswhentwowordsareverysimilarinmeaningorsound,andthebrainistryingtoretrieveonebutgetsconfusedwiththeother.Forexample,ifyouaretryingtoremembertheword"beach,"butyourbrainretrieves"beachball"instead,thatisblocking.Anothertheoryinvolvesthe"lexicalretrieval"process.Ourmemoryisvast,butwehavea"searchengine"inourbrainthattriestofindtherightfile.Sometimes,thesearchenginemalfunctions,perhapsduetofatigueorstress,andfailstopullupthecorrectfile.Interestingly,researchshowsthatthe"Tip-of-the-Tongue"stateismorelikelytohappeninthemorningandlesslikelytohappenwhenyouarewell-rested.Furthermore,thisstatecansometimesbebeneficial.Itforcesyourbraintoworkhardertoretrievetheinformation,whichcanstrengthentheneuralpathwaysassociatedwiththatmemory.So,thenexttimeyoucan'trememberaword,don'tworry;yourbrainisjustdoingsomeheavylifting.Questions20-2120.Whatisthemaintopicofthelecture?A.ThecausesofmemorylossintheelderlyB.The"Tip-of-the-Tongue"stateandmemoryretrievalC.TheimportanceofvocabularyinpsychologyD.Theeffectsofstressonthebrain21.Accordingtothelecture,whatis"blocking"?A.WhenapersonforgetsamemoryduetostressB.WhentwosimilarwordscompeteforretrievalC.WhenthebrainfailstoaccessthesearchengineD.Whenapersonexperiencesmorningfatigue22.Theprofessormentionsthatthe"Tip-of-the-Tongue"stateismorelikelytohappeninthemorninginordertoA.suggestthatpeopleshouldstudyinthemorningB.explainthebiologicalreasonforthephenomenonC.provethatsleephelpsmemoryD.criticizestudentswhoaretiredLecture2Let’scontinueourdiscussiononeconomics.Today,wearegoingtolookatarelativelyneweconomicmodelknownasthe"GigEconomy."Thismodelischaracterizedbyshort-termcontractsorfreelanceworkasopposedtopermanentjobs.CompanieslikeUber,TaskRabbit,andUpworkrelyonthismodeltoremainflexibleandcost-effective.Oneoftheprimaryadvantagesofthegigeconomyisflexibilityforworkers.Independentcontractorscanchoosewhenandwheretheywork,whichisparticularlyappealingtostudentsandparents.Fromacompany'sperspective,theycanscaletheirworkforceupordownbasedondemandwithouttheoverheadcostsoffull-timeemployees,suchashealthinsuranceorpaidvacation.However,criticsarguethatthegigeconomylacksstability.Gigworkersoftendonotreceivebenefitslikehealthinsurance,paidsickleave,orretirementplans.Additionally,theyareclassifiedasindependentcontractorsratherthanemployees,whichmeanstheydonothavethesamelegalprotections.Thelackofjobsecuritycanleadtofinancialinstabilityforworkers,especiallyduringeconomicdownturns.Despitethesechallenges,thegigeconomycontinuestogrow.Itrepresentsashiftinhowweviewemployment,movingawayfromthetraditional"jobforlife"modeltowardamorefluid,project-basedapproach.Questions23-2423.Whatisthemainideaofthelecture?A.ThebenefitsofthegigeconomyforbothworkersandcompaniesB.TheeconomicimpactofthegigeconomyontraditionaljobsC.ThedefinitionandprosandconsofthegigeconomyD.Thechallengesofworkingasanindependentcontractor24.Whydocompaniespreferthegigeconomy?A.ItprovideslegalprotectionforemployeesB.ItallowsforflexibilityandlowercostsC.ItguaranteesjobsecurityforworkersD.Iteliminatestheneedforhealthinsurance25.Accordingtothelecture,whatisadisadvantageofthegigeconomyforworkers?A.ItisdifficulttofindworkB.ItdoesnotofferbenefitsorjobsecurityC.ItrequiresworkerstoworklongerhoursD.ItrestrictstheabilitytoworkfromhomeLecture3Inthislecture,wewilldiscussthehistoryofimpressionism,anartmovementthatbeganinParisinthe1870s.Beforeimpressionism,artwasheavilyinfluencedbyacademictraditions,whichemphasizedpreciselines,detailedbrushstrokes,andrealisticlighting.ArtistslikeJacques-LouisDavidpaintedscenesthatlookedlikephotographs.Theimpressionists,however,broketheserules.Theywantedtocapturethefleetingeffectsoflightandatmosphere.Theypaintedoutdoors,or"enpleinair,"usingloosebrushstrokesandbright,unnaturalcolors.Thistechniqueallowedthemtocapturethemomentaryqualityoflightreflectingoffwater,leaves,orbuildings.Oneofthemostfamousimpressionisttechniquesistheuseofcomplementarycolors.Complementarycolorsarecolorsthatareoppositeeachotheronthecolorwheel,suchasblueandorange.Whenplacednexttoeachother,thesecolorsvibrateandcreateasenseofenergy.Thiswasaradicaldeparturefromthemuted,harmoniouscolorsusedinearlierart.Impressionismwasinitiallymetwithridicule.Criticscalledit"unfinished"and"sketchy."However,iteventuallygainedpopularityandpavedthewayformodernart.Themovementwasalsosignificantforitsinclusionofwomenartists,suchasMaryCassattandBertheMorisot,whowereoftenexcludedfrommale-dominatedsalons.Questions26-2726.Whatisthemaintopicofthelecture?A.ThetechniquesusedbyJacques-LouisDavidB.ThehistoryandcharacteristicsofimpressionismC.TheroleofwomenintheFrenchRevolutionD.Thescientificstudyoflightandcolor27.Whywereimpressionistpaintingsinitiallycriticized?A.TheyweretooexpensivetobuyB.TheywerepaintedoutdoorsratherthaninstudiosC.TheywereconsideredunfinishedandsketchyD.Theyusedunnaturalcolors28.Theprofessormentions"complementarycolors"toillustrateA.howimpressionistsachievedasenseofenergyB.thedifferencebetweenblueandorangeC.thescientifictheoryoflightreflectionD.thepopularityofimpressionistpaintingsSpeakingSectionTask1Someuniversitiesrequirestudentstotakeclassesoutsidetheirmajorfieldofstudy.Othersrequirestudentstotakeclassesonlywithintheirmajor.Whichpolicydoyouthinkisbetter,andwhy?Task2Reading:Theuniversityisplanningtobuildanewcoffeeshoponcampus.Reason1:Studentsneedaplacetostudyandsocialize.Reason2:Thecurrentfoodoptionsoncampusarelimited.Listening:Awomanagreeswiththeplan.Point1:Thecurrentcafeteriaistoocrowdedduringlunch,andstudentsoftenhavetowaitinlonglines.Point2:Acoffeeshopoffersaquieterenvironmentforstudyingandawidervarietyofsnacks.Task3Reading:Theconceptof"HedonicAdaptation."Definition:Thetendencyofpeopletoquicklyreturntoarelativelystablelevelofhappinessdespitemajorpositiveornegativeeventsorlifechanges.Listening:Theprofessorusesanexampleofwinningthelottery.Explanation:Heexplainsthatlotterywinnersreportbeinghappyinitially,butafterafewyears,theirhappinesslevelsreturntotheaveragelevelofpeoplewhodidn'twinthelottery.Similarly,peoplewhogetdivorcedoftenreturntotheirprevioushappinesslevelsaftersometime.Task4Listening:Theprofessordiscusses"KeystoneSpecies"inecology.Point1:Akeystonespeciesisaspeciesthathasadisproportionatelylargeeffectonitsenvironmentrelativetoitsabundance.Point2:Anexampleistheseaotter.Seaotterseatseaurchins.Seaurchinseatkelp.Withoutseaotters,seaurchinpopulationsexplode,destroyingkelpforests.Withseaotters,thekelpforestsremainhealthy,providingahomeformanyothermarineanimals.WritingSectionIntegratedWritingReadingpassage:Arecenttheorysuggeststhattheextinctionofthewoollymammothwascausedbyhumanhunting.Proponentsofthistheorypointtoseveralpiecesofevidence.First,evidenceofbutcherymarksonmammothbonesfoundinSiberiacoincideswiththetimeperiodwhenhumansarebelievedtohaveenteredNorthAmerica.Second,otherlargeanimalspecies,suchasthesaber-toothedcat,alsodisappearedaroundthesametime,suggestingacommoncause.Third,computermodelsshowthathumanhuntingcouldhavereducedthemammothpopulationbelowasustainablelevel,leadingtoextinction.Listeningpassage:Theprofessorchallengesthetheorythathumanhuntingcausedtheextinction.Shearguesthatthetimingofthebutcherymarksisnotproofofhunting.Shesuggeststhathumansfoundthecarcassesaftertheanimalshadalreadydiedfromnaturalcauses.Regardingtheotherspecies,shepointsoutthatthesaber-toothedcatlikelywentextinctduetoachangeinclimate,nothunting.Finally,sheexplainsthatthecomputermodelsareflawedbecausetheydidn'taccountforarapidclimateshiftthatoccurredatthesametimeashumanarrival.Thisshiftwouldhavedrasticallyreducedthemammoth'sfoodsupply.IndependentWritingDoyouagreeordisagreewiththefollowingstatement?Itisbettertowatchamovieinatheaterthanathome.Usespecificreasonsandexamplestosupportyouranswer.试卷答案ReadingSectionPassage1:CoralBleaching1.B*解析：文章第一段提到bleaching是珊瑚受到压力时的现象，第二段解释原因（温度升高），第三段提到acidification，第四段讨论恢复。选项B涵盖了现象、原因和影响，是主旨。A太局限，C未提及，D未提及。2.A*解析：根据文章第二段第一句“...coralsexpelthesymbioticalgae...turningthecoralwhite.”可知，珊瑚变白是因为排出了共生藻类。3.B*解析：语境线索在第三段最后一句“...exacerbatestheproblembyweakeningthecoral'scalciumcarbonateskeleton...”。Exacerbates意为使恶化、加重。Alleviates是减轻，Worsens是恶化，Clarifies是阐明，Prevents是阻止。故选B。4.B*解析：根据文章第三段第四句“Recoveryfrombleachingispossibleifconditionsremainstable.”可以推断，恢复取决于条件的稳定性。A错在impossible，C错在equallyhealthy，D文中未直接对比。5.B*解析：根据文章第三段最后一句“...exacerbatestheproblembyweakeningthecoral'scalciumcarbonateskeleton...”。Calciumcarbonate正是珊瑚骨骼的主要成分。6.C*解析：根据文章第二段最后一句“...corallosesitsprimarysourceofenergy,whichisderivedfromphotosynthesis.”可知，虫黄藻通过光合作用提供能量。Passage2:PlanetaryFormation7.B*解析：文章主要讨论了行星形成的理论（NebularHypothesis），并重点介绍了GrandTackHypothesis以及最近的发现（HotJupiters）来证明行星迁移是普遍现象。选项B最贴切。8.C*解析：根据文章第二段关于GrandTackHypothesis的描述：“Jupiter’simmensegravitydisruptedtheorbitsofotherbodies,scatteringtheminwardandpushingMarstobesmallerthanEarth.”故选C。9.B*解析：Anomaly意为“异常现象”。文中提到hotJupiters是“unusual”的，且与常规理论不符，故选B。10.D*解析：根据文章最后一段第一句“Recentobservationsofexoplanetshaveprovidednewsupportformigrationtheories.”以及下文的hotJupiters例子，直接支持了迁移理论。A错在formedthere，B错在NebularHypothesis能解释距离，C错在planetesimals比protoplanets小。Passage3:TheSilkRoad11.C*解析：Conduit意为“通道、媒介”。Pathway意为“路径”，语义最接近。Barrier是障碍，Source是源头，Obstacle是障碍。12.B*解析：根据文章第二段第一句“ThetruevalueoftheSilkRoadlayinthetransferofcultureandknowledge.”。A、D只是具体物品，C是政治扩张，都不是主要价值。13.C*解析：选项A（海路兴起）、B（政治动荡）、D（奥斯曼帝国崛起）都在文中作为decline的原因提及。C（造纸术的发明）是促进丝绸之路贸易的技术，不是导致其衰落的因素。14.B*解析：文章提到中国发明了火药、指南针和印刷术，并说这些“eventuallymadetheirwaytoEurope”。这是为了说明中国技术对欧洲的影响。ListeningSectionConversation115.B*解析：学生说“strugglingtonarrowitdown...Doyouhaveanysuggestions?”，表明需要教授帮助缩小研究范围。16.B*解析：教授建议关注“impactofremoteworkonurbanplanning”，具体到“transformationofcommercialrealestate”。17.A*解析：教授回应学生说“remoteworkisagreattopic.Thekeyistofindaspecificproblem...”，暗示学生现在的范围太宽泛。Conversation218.C*解析：学生说“IhaveaconflictwithTuesdayafternoons...IsthereanywayIcouldswitchtotheFridaysection?”。19.D*解析：教授说“IcanseeifthereisanopeningintheMondayeveningsection...I’llputyournameonthewaitinglistforMonday.”Lecture120.B*解析：讲座通篇讨论Tip-of-the-Tonguestate，即话在嘴边却说不出来的现象及其理论解释。21.B*解析：教授定义Blocking为“twowordsareverysimilar...andthebrainistryingtoretrieveonebutgetsconfusedwiththeother.”22.B*解析：教授提到“researchshowsthatthe'Tip-of-the-Tongue'stateismorelikelytohappeninthemorning...inordertoexplainthebiologicalreasonforthephenomenon.”Lecture223.C*解析：讲座定义了GigEconomy，并分别讨论了其优点（flexibility,lowercosts）和缺点（lackofstability,nobenefits）。24.B*解析：教授说“Fromacompany'sperspective,theycanscaletheirworkforce...withouttheoverheadcostsoffull-timeemployees.”25.B*解析：教授明确指出Gigworkersdonotreceivebenefitslikehealthinsuranceorpaidsickleave,orretirementplans.Lecture326.B*解析：讲座介绍了印象派的历史、背景、技法以及受到的批评，属于艺术史范畴。27.C*解析：教授提到批评家称之为“unfinished”和“sketchy”。28.A*解析：教授提到互补色“createasenseofenergy”来展示这种技法的特点。SpeakingSectionTask1参考答案：Ipreferthepolicywherestudentsarerequiredtotakeclassesoutsidetheirmajor.Themainreasonisthatinterdisciplinaryknowledgefosterscreativity.Forexample,acomputersciencestudenttakingaliteratureclassmi