2026年托福《口语》真题回忆版

2026年托福《口语》真题回忆版2026年托福口语真题回忆版（第一套）Task1：独立口语任务题目：Somepeoplebelievethatuniversitystudentsshouldberequiredtoattendclassesinperson,whileothersbelievethatstudentsshouldhavetheoptiontoattendclassesonlineorwatchrecordedlectures.Whichviewdoyousupportandwhy?参考范文与解析：Personally,Ifirmlybelievethatuniversitystudentsshouldberequiredtoattendclassesinperson.Therearetwomainreasonsforthisstance.Firstandforemost,in-personattendancefacilitatessignificantlybetterinteractionandengagement.Inaphysicalclassroom,studentscanimmediatelyaskquestionsiftheyareconfusedaboutaconcept,andprofessorscangaugetheroom'sreactiontoadjusttheirteachingpace.Forinstance,duringmysophomoreyear,Itookacomplexphysicscoursewheretheprofessorusedreal-timedemonstrations.IfIhadbeenwatchingarecording,Iwouldn'thavebeenabletoaskforclarificationonthespot,whichwouldhavehinderedmyunderstandingofthematerial.Secondly,attendingclassesphysicallyhelpsstudentsbuildadisciplinedroutineandfostersnetworkingopportunities.Goingtocampuscreatesaclearboundarybetween"studytime"and"leisuretime,"reducingprocrastination.Furthermore,theinformaldiscussionsthathappenbeforeandafterclassareoftenwherestudentsformstudygroupsormakeprofessionalconnectionsthatcanbeinvaluablefortheirfuturecareers.Onlineclassessimplycannotreplicatethisspontaneoussocialdynamic.Therefore,consideringthebenefitsofdirectinteractionandthedevelopmentofsocialandprofessionalskills,Ibelievemandatoryin-personattendanceisthesuperiorapproach.Task2：校园情境题阅读材料：ProposaltoExtendLibraryHoursTheuniversitylibrarycurrentlyclosesat10:00PM.Agroupofstudentshassubmittedaproposaltotheadministrationsuggestingthatthelibraryshouldremainopenuntil2:00AMonFridayandSaturdaynights.Theproposalcitestwomainreasons.First,manystudentshavebusyschedulesduringtheweekduetopart-timejobsorextracurricularactivitiesandcanonlyfindsubstantialtimetostudyonweekends.Second,finalexamsandmajorprojectdeadlinesoftenrequireextendedconcentrationperiods,andthecurrentclosingtimeinterruptsthestudyflowofnight-owlstudentswhoaremostproductivelateatnight.听力材料：Man:Hey,didyouseethatproposalaboutextendinglibraryhours?Woman:Yeah,Isawitpostedonthebulletinboard.Ithinkit'safantasticidea,butI'mabitworriedaboutthelogistics.Man:Whatdoyoumean?Woman:Well,Iagreewiththefirstpointcompletely.IworkatthedininghallMondaythroughThursday,soIbarelyhavetimetodomyhomework.Havingthelibraryopenlateonweekendswouldbealifesaverformetocatchuponmyreadingandassignments.Man:Thatmakessense.Butwhataboutthesecondreason?Woman:I'mnotsosureaboutthe"night-owl"argument.Whilesomestudentsstudywelllateatnight,Ithinkkeepingthelibraryopenthatlatemightactuallyencourageprocrastination.Ifstudentsknowtheycanstayuntil2AM,theymightjustwastetimescrollingthroughsocialmediaearlierintheevening,thinkingtheyhaveallnight.Itmightbebettertoforcethemtomanagetheirtimemoreefficientlyduringtheday.Man:Hmm,Ihadn'tthoughtofthat.Butwouldn'ttheincreasedutilitybeworthit?Woman:Itwould,butonlyiftheuniversitycanaffordthestaffcosts.Securityguardsandcleaningstaffwouldneedtobepaidforthoseextrahours.Ifthebudgetisn'tthere,theymighthavetocutserviceselsewhere,likeprintingortutoring.题目：Thewomanexpressesheropinionabouttheproposaltoextendlibraryhours.Stateheropinionandexplainthereasonsshegivesforholdingthatopinion.参考范文与解析：Thewomansupportstheproposaltoextendthelibraryhoursuntil2:00AMonweekends,thoughshehassomereservationsregardingthepotentialconsequences.First,sheagreeswiththeproposal'spointregardingstudentschedules.Shesharesherpersonalexperience,mentioningthatsheworksapart-timejobatthedininghallfromMondaytoThursday.Consequently,shestrugglestofindtimetostudyduringtheweek,sotheextendedweekendhourswouldprovideherwithacrucialopportunitytocatchuponheracademicwork.However,sheexpressesskepticismabouttheproposal'ssecondreason,whicharguesthatlate-nighthoursaccommodateproductive"night-owls."Shecountersthatthismightactuallyencouragebadhabitsandprocrastination.Shesuggeststhatifstudentsknowtheycanstayupuntil2AM,theymightnotusetheirtimeefficientlyearlierintheevening,perhapsengagingindistractionslikesocialmediainsteadofstudying.Additionally,sheraisesapracticalconcernaboutthecostofpayingsecurityandcleaningstafffortheextrahours,fearingitmightleadtobudgetcutsinotheressentialareaslikeprintingservices.Task3：学术讲座题阅读材料：EmotionalIntelligence(EQ)EmotionalIntelligenceistheabilitytorecognize,understand,andmanageone'sownemotions,aswellastoinfluencetheemotionsofothers.Inaworkplacesetting,EQisoftenconsideredacriticalleadershipskill.HighEQallowsleaderstonavigatecomplexsocialinteractions,resolveconflictseffectively,andbuildstrong,cohesiveteams.UnlikeIQ,whichmeasurescognitiveability,EQfocusesoninterpersonalandintrapersonalskills.听力材料：Professor:Okay,let'slookathowEmotionalIntelligenceplaysoutinreal-worldmanagementscenarios.Imagineasoftwarecompany,TechNova.TheyhadaprojectmanagernamedSarah.Sarahwasbrillianttechnically—sheknewthecodeinsideout—butshehadlowEQ.Whentheteamfacedatightdeadlineandstresslevelswerehigh,Sarahwouldjustdemandeveryoneworkfaster,ignoringtheiranxiety.Shewouldcriticizeerrorsharshlyinfrontofthewholegroup.Asaresult,theteamfeltdemoralizedandundervalued.Twokeydevelopersactuallyquitbecauseofthetoxicenvironment,causingtheprojecttofail.Now,contrastthatwithanothermanageratthesamecompany,David.Davidmightnothavebeenthedeepesttechnicalexpert,buthehadhighEQ.Whenasimilarcrisishit,Davidnoticedhisteamwasstressed.Insteadofjustpushingforresults,heheldameetingtoacknowledgetheirhardworkandthedifficultyofthesituation.Helistenedtotheirconcernsandevenarrangedforcateredmealstoshowsupport.Byvalidatingtheirfeelings,hereducedtheiranxiety.Theteamfeltappreciatedandmotivated,leadingthemtogotheextramiletomeetthedeadlinesuccessfully.题目：UsingtheexampleofTechNova,explainhowEmotionalIntelligenceaffectsleadershipsuccess.参考范文与解析：TheprofessorillustratestheconceptofEmotionalIntelligence(EQ)bycomparingtwoprojectmanagers,SarahandDavid,atasoftwarecompanycalledTechNova.SarahrepresentsamanagerwithlowEQ.Althoughshehadstrongtechnicalskills,shelackedtheabilitytomanageherownemotionsandunderstandherteam'sfeelings.Whentheteamwasunderstress,sherespondedwithharshcriticismandignoredtheiranxiety.Thislackofempathycreatedatoxicworkenvironment,causingemployeestofeeldemoralizedandeventuallyleadingtotheresignationofkeystaffandthefailureoftheproject.Incontrast,DavidrepresentsamanagerwithhighEQ.Whenfacingacrisis,herecognizedtheteam'semotionalstate.Insteadofmerelyfocusingonthetechnicaloutput,hevalidatedtheirfeelingsbylisteningtotheirconcernsandshowingappreciationthroughgestureslikeprovidingmeals.Thisabilitytomanagetheemotionalclimatehelpedreduceanxietyandmotivatedtheteamtoworkharder,ultimatelyleadingtotheproject'ssuccess.ThisexampledemonstratesthathighEQiscrucialforeffectiveleadershipandteamcohesion.Task4：学术讲座题听力材料：Professor:Todaywe'regoingtotalkaboutabiologicalconceptcalled"CarryingCapacity."Inecology,carryingcapacityreferstothemaximumpopulationsizeofaspeciesthatanenvironmentcansustainindefinitely,giventheavailableresourceslikefood,water,andhabitat.Whenapopulationisbelowthecarryingcapacity,resourcesareabundant,andthepopulationtendstogrow.However,asthepopulationapproachesthecarryingcapacity,resourcesbecomelimited,whichslowsdowngrowthandeventuallystabilizesthepopulationsize.Let'slookataspecificexample:theintroductionofreindeertoSt.MatthewIslandintheBeringSea.In1944,scientistsintroducedasmallherdof29reindeertotheisland.Atthattime,theislandhadanabundantsupplyoflichen,thereindeer'sprimaryfoodsource.Withnonaturalpredatorsandplentyoffood,thereindeerpopulationexploded.Withinjustafewyears,theherdgrewtoover6,000animals.However,thisrapidgrowthseverelydepletedthelichensupply.Thereindeerconsumedthevegetationfasterthanitcouldregenerate.Eventually,thefoodsupplycouldnolongersupportthemassivepopulation.Thecarryingcapacityhadbeendrasticallyexceeded.Asaresult,therewasamassivedie-off.Withinashortperiodafterthepeak,thepopulationcrashed,andthenumberofreindeerplummetedtofewerthan50.Thistragicexampleillustratestheconsequencesofapopulationexceedingitsenvironment'scarryingcapacity.题目：UsingtheexampleofreindeeronSt.MatthewIsland,explaintheconceptofcarryingcapacity.参考范文与解析：Theprofessordefines"carryingcapacity"asthemaximumnumberofindividualsofaspeciesthatanenvironmentcansupportwithitsavailableresources.HeillustratesthiswiththecaseofreindeerintroducedtoSt.MatthewIsland.Initially,theislandhadavastamountoflichen,themainfoodsourceforthereindeer.Sincethesmallpopulationofreindeerwasfarbelowtheisland'scarryingcapacity,resourceswereplentiful,allowingthepopulationtogrowrapidlyfrom29toover6,000animalsinashorttime.However,thisrapidconsumptioneventuallydepletedthelichensupply.Oncethepopulationsizeexceededtheenvironment'scarryingcapacity,therewasnotenoughfoodtosustaintheherd.Thisresourcescarcityledtoapopulationcrash,wherethenumberofreindeerdroppeddramaticallyfromthousandstofewerthan50.Thiscycledemonstrateshowcarryingcapacitylimitspopulationgrowthwhenresourcesareexhausted.***2026年托福口语真题回忆版（第二套）Task1：独立口语任务题目：Doyouagreeordisagreewiththefollowingstatement?Itisbettertospendmoneyonexperiences(liketravelorconcerts)thanonmaterialobjects(likeclothesorelectronics).参考范文与解析：Istronglyagreewiththestatementthatspendingmoneyonexperiencesisbetterthanspendingitonmaterialobjects.Myopinionisbasedonthelongevityofhappinessandtheopportunityforpersonalgrowth.Firstly,whiletheexcitementofbuyinganewgadgetorpieceofclothingfadesquickly—aphenomenonknownasthe"hedonictreadmill"—memoriescreatedthroughexperiencestendtolastalifetime.Forexample,IstillvividlyrecallahikingtripItookwithmyfamilytwoyearsago.ThesenseofaccomplishmentandthebeautifulscenerywesharedbringmejoywheneverIthinkaboutthem.Incontrast,IcanbarelyrememberthespecificphonemodelIboughtaroundthatsametime,letalonefeelexcitedaboutit.Secondly,experiencesprovideuswithopportunitiestolearnandgrowasindividuals.Travelingtoanewcountryexposesustodifferentculturesandlanguages,broadeningourperspectives.Attendingaconcertmightinspireustolearnamusicalinstrument.Materialpossessions,ontheotherhand,generallyserveastaticfunctionandrarelycontributetoourpersonaldevelopmentinthesamemeaningfulway.Therefore,investinginexperiencesyieldsricherreturnsforourmentalandemotionalwell-being.Task2：校园情境题阅读材料：ChangetoUniversityArtGalleryTheuniversityadministrationhasannouncedachangeinpolicyfortheon-campusartgallery.Previously,thegalleryexclusivelyfeaturedworksbyprofessionalartists.Startingnextsemester,thegallerywilldedicateonemontheachsemestertodisplayingartworkcreatedbyuniversitystudents.Theadministrationhopesthischangewillachievetwogoals:torecognizeandencouragestudenttalentwithintheartdepartmentandtoincreasestudentengagementwiththegallery,asstudentsaremorelikelytovisitwhentheirpeers'workisondisplay.听力材料：Man:Haveyouheardaboutthenewpolicyfortheartgallery?Woman:Yes,Ireadaboutitinthestudentnewsletter.Ithinkit'sagreatmove.Man:Whydoyouthinkso?Woman:Well,foronething,it'sahugemoraleboosterforartstudents.Usually,artmajorsspendalltheirtimeworkinginstudiosandonlygetfeedbackfromprofessors.Havingtheirworkdisplayedinapublic,professionalspacegivesthemasenseofvalidation.Itcouldevenmotivatethemtoproducehigherqualityworkiftheyknowit'sgoingtobeseenbythegeneralpublic,notjustgraded.Man:That'strue.Itgivesthemarealaudience.Woman:Exactly.Andregardingthesecondpoint,Ithinkitwilldefinitelymakethegallerymorepopular.Honestly,Irarelygotherebecause,tobehonest,Idon'talwaysunderstandmodernartbyprofessionals.ButifIseeaflyersaying"StudentArtExhibition,"I'dbemuchmorecurioustoseewhatpeopleIknoworwhoareinmyclassesarecreating.Itfeelsmorerelatableandlessintimidating.题目：Thewomanexpressesheropinionaboutthenewartgallerypolicy.Stateheropinionandexplainthereasonsshegivesforholdingthatopinion.参考范文与解析：Thewomanendorsestheadministration'snewpolicytodedicategalleryspacetostudentartwork.Shesupportsthepolicybecauseitbenefitsartstudentsbyprovidingvalidationandmotivation.Sheexplainsthatartstudentstypicallyworkinisolationandonlyreceivefeedbackfromprofessors.Exhibitingtheirworkinaprofessionalgallerygivesthemasenseofrecognitionandarealaudience.Thispublicexposurecanincentivizethemtocreatehigher-qualitywork,knowingitwillbeviewedbythecommunityratherthanjustgraded.Additionally,sheagreesthatthechangewillincreasestudentengagementwiththegallery.Sheadmitsthatsherarelyvisitsthegallerytoseeprofessionalartbecausesheoftenfindsitdifficulttounderstandorintimidating.However,shesuggeststhatexhibitionsfeaturingstudentworkwouldbemorerelatableandinterestingtothegeneralstudentbody.Seeingworkcreatedbypeerswouldsparkcuriosityandmakestudentsmorelikelytovisitthantheywouldforprofessionalshows.Task3：学术讲座题阅读材料：TheAnchorPrincipleInmarketingpsychology,theAnchorPrinciplereferstothecognitivebiaswhereanindividualreliestooheavilyonaninitialpieceofinformation(the"anchor")whenmakingdecisions.Onceananchorisset,allfuturenegotiations,arguments,andestimatesarediscussedinrelationtothatanchor.Forexample,whenpricingaproduct,thefirstpricepresentedservesastheanchor.Subsequentpricesarejudgedasexpensiveorcheaprelativetothisanchor,regardlessoftheproduct'sintrinsicvalue.听力材料：Professor:Let'sseehowtheAnchorPrincipleworksinretail.Imagineafurniturestoresellingasofa.Thestorewantstosellthesofafor500.Theyplacethesofainthestoreandinitiallymarkitat1,000.This题目：Usingtheexampleofthefurniturestore,explaintheAnchorPrinciple.参考范文与解析：TheprofessorexplainstheAnchorPrincipleasacognitivebiaswherepeoplerelyheavilyonthefirstpieceofinformationtheyreceivetomakesubsequentjudgments.Heillustratesthiswithafurniturestore'spricingstrategyforasofa.Thestoreaimstosellasofafor500.ToTask4：学术讲座题听力材料：Professor:Today,Iwanttodiscussaspecificadaptationinplantscalled"droughtdeciduousness."Mostplantskeeptheirleavesallyearroundtophotosynthesize,butinaridenvironmentswherewaterisscarce,someplantshaveevolvedtobedroughtdeciduous.Thismeanstheyshedtheirleavesduringdryseasonstoasasurvivalmechanismtoconservewater.Yousee,leavesaretheprimarysitewhereplantslosewaterthroughaprocesscalledtranspiration—essentially,evaporationfromtheleafsurfaces.Inadrought,ifaplantkeptallitsleaves,itwouldlosewaterfasterthanitcouldabsorbitfromthedrysoil,leadingtodeath.Bydroppingitsleaves,theplantdramaticallyreducesitssurfacearea,therebystoppingtranspirationandretainingthepreciouswaterstoredinitsstemandroots.AclassicexampleisthePaloVerdetreefoundinthedesertsofthesouthwesternUnitedStates.Formostoftheyear,thedesertisextremelydry.Duringthislongdryseason,thePaloVerdetreeappearsleafless;itsbranchesaregreenandphotosynthesize,butithasnoleaves.Thisallowsittosurvivewithoutwaterformonths.However,duringthebriefrainyseason,whenwateristemporarilyavailable,thetreerapidlysproutsnewleaves.Ittakesadvantageofthewatertogrowandphotosynthesizeefficiently.Assoonastherainstopsandthesoildriesoutagain,thetreedropsthoseleavestore-enterwater-savingmode.题目：UsingtheexampleofthePaloVerdetree,explaintheconceptofdroughtdeciduousness.参考范文与解析：Theprofessordefines"droughtdeciduousness"asanadaptationwhereplantsshedtheirleavesduringdryseasonstopreventwaterloss.HeusesthePaloVerdetree,nativetothedesertsofthesouthwesternUnitedStates,toillustratethisconcept.Duringtheextendeddryseason,waterinthesoilisscarce.Tosurvive,thePaloVerdetreeshedsitsleavesandremainsleafless.Sinceleavesarethemainsourceofwaterlossthroughtranspiration,droppingthemallowsthetreetoconservewaterandsurvivetheharshdroughtconditions.Thetreereliesonitsgreenstemsforphotosynthesisduringthisperiod.Conversely,whenthebriefrainyseasonarrivesandwaterbecomesabundant,thePaloVerdetreequicklysproutsnewleaves.Itutilizestheavailablewatertosupportleafgrowthandmaximizephotosynthesis.Oncetherainyseasonendsandtheenvironmentbecomesdryagain,thetreeshedsitsleavestoconservewateroncemore,demonstratingthecycleofdroughtdeciduousbehavior.***2026年托福口语真题回忆版（第三套）Task1：独立口语任务题目：Somepeopleprefertogetadvicefromolderpeople(likeparentsorgrandparents),whileothersprefertogetadvicefromfriendstheirownage.Whomdoyouprefertoaskforadviceandwhy?参考范文与解析：Iprefertoseekadvicefromolderpeople,suchasparentsorgrandparents,primarilybecauseoftheirextensiveexperienceandobjectivity.Firstly,olderindividualshavelivedthroughawidevarietyoflifesituationsthatIhavelikelynotencounteredyet.Whetherit's关于careerchoices,financialplanning,orrelationshipissues,theyhavethe"wisdomofhindsight."Forinstance,whenIwasconfusedaboutwhichmajortochooseincollege,mygrandfathersharedhisowncareerpathandthemistakeshemadealongtheway.HisperspectivehelpedmeavoidpitfallsthatIwouldn'thaveforeseenonmyown.Secondly,friendsmyownage,whilesupportive,oftenlacktheobjectivityneededforseriousdecisions.TheymighttellmewhatIwanttohearratherthanwhatIneedtohear,ortheymightbeinfluencedbythesamepeerpressuresandtrendsthatarecloudingmyjudgment.Olderpeople,beingremovedfrommyimmediatesocialcircle,canofferamoredetachedandrationalviewpoint.Theyprioritizemylong-termwell-beingovershort-termpopularityorconvenience.Task2：校园情境题阅读材料：NewCampusCoffeeShopTheuniversityplanstoopenanewcoffeeshopinthestudentcenterbuilding.Theproposalstatesthatthecoffeeshopwillbeoperatedbytheuniversity'shospitalitymanagementprogram.Thisservestwopurposes:itwillprovideaconvenientlocationforstudentsandfacultytopurchasecoffeeandsnackswithoutleavingthemaincampusarea,anditwilloffervaluablehands-ontrainingexperienceforstudentsinthehospitalityprogramwhoneedtofulfillinternshiprequirements.听力材料：Man:Lookslikewe'refinallygettingacoffeeshopinthestudentcenter.Woman:Yeah,Isawtheconstructionplans.It'sabouttime.Man:I'mjustgladIwon'thavetowalkallthewaytotheoff-campuscafeanymore.Woman:Exactly.Theconveniencefactorishuge.Especiallyinthewinterwhenit'sfreezingoutside,havingaplacetogetahotcoffeerightbetweenclassesinthesamebuildingisgoingtobealifesaver.Itfitsperfectlyintoatightschedule.Man:True.ButIwonderabouttheservice.Sinceit'sgoingtobestaffedbystudents...Woman:Actually,Ithinkthat'sagoodthing.Itookahospitalityclasslastsemester,andwelearnedallthetheorybuthadverylittlechancetopractice.Runningarealcoffeeshopgivesthosestudentsachancetodealwithrealcustomers,handlemoney,andmanagethemorningrush.It'smuchbettertrainingthanjustsittinginaclassroom.Plus,they'llbegradedonit,sothey'llprobablybeprettyprofessional.题目：Thewomanexpressesheropinionaboutthenewcampuscoffeeshop.Stateheropinionandexplainthereasonsshegivesforholdingthatopinion.参考范文与解析：Thewomanisenthusiasticaboutthenewcampuscoffeeshopandsupportstheplanfortwomainreasons.First,shehighlightstheconvenienceitoffers.Shepointsoutthatcurrently,studentshavetowalktoanoff-campuslocationtogetcoffee,whichisinconvenientandunpleasant,especiallyduringthewinter.Havingacoffeeshoprightinthestudentcenterallowsstudentstoeasilypurchasecoffeeandsnacksbetweenclasseswithoutleavingthemaincampusarea,whichfitswellintobusystudentschedules.Second,sheaddressestheconcernabouttheshopbeingoperatedbystudents,viewingitasapositiveaspect.Shearguesthatthisprovidespractical,hands-ontrainingforhospitalitymanagementstudents.Unlikeclassroomtheory,runningarealcoffeeshopallowsstudentstogainreal-worldexperienceinhandlingcustomers,managingtransactions,anddealingwithhigh-pressuresituationslikethemorningrush.Sincethestudents'performanceislikelytiedtotheirgrades,shebelievestheywillbemotivatedtoprovideprofessionalservice.Task3：学术讲座题阅读材料：SignalDetectionTheorySignalDetectionTheoryisamethodformeasuringsensitivitytosignalsamidstbackgroundnoise.Itdistinguishesbetweenasubject'ssensitivity(theactualabilitytodetectasignal)andtheirbias(theirtendencytoreportasignalregardlessofwhetheroneispresent).Forexample,inaradaroperator'stask,the"signal"isanenemyplane,andthe"noise"israndomblipsonthescreen.Acautiousoperatormightmissrealplanes(a"miss"),whileananxiousoperatormightreportnoiseasplanes(a"falsealarm").听力材料：Professor:Let'sapplySignalDetectionTheorytoadifferentcontext:afactoryqualitycontrolinspector.Imagineaninspectorwhosejobistocheckbottlescomingoffanassemblylineforcracks.The"signal"isacrack,andthe"noise"isjustthenormalglasssurface.Ifthefactorymanagementhasaverystrictpolicythatnodefectivebottlescaneverreachthecustomer,theinspectormightdevelopa"liberalbias."Thismeanstheyareextremelylikelytosayabottleiscracked,eveniftheyareonlyslightlyunsure.Theywouldratherrejectagoodbottle(afalsealarm)thanrisklettingabadonethrough.Inthiscase,theirhighrateofreportingcracksdoesn'tnecessarilymeantheireyesightisbetter;itjustmeanstheyarebiasedtowardsaying"yes."Ontheotherhand,iftheinspectoristoldthatthefactoryislosingtoomuchmoneybythrowingawaygoodbottles,theymightdevelopa"conservativebias."Now,theywillonlyreportacrackifitisabsolutelyobvious.Theymightletslightlycrackedbottlespassthrough(amiss)toavoidwastinggoodones.Theirsensitivitytothecrackshasn'tchanged,buttheirdecisioncriterionhasshiftedbasedontheconsequencesofmakingamistake.题目：Usingtheexampleofthefactoryinspector,explainSignalDetectionTheory.参考范文与解析：TheprofessorusestheexampleofafactoryinspectorcheckingbottlesforcrackstoexplainSignalDetectionTheory,specificallyfocusingontheconceptofbias.Theprofessordescribeshowaninspector'sdecisiontoreporta"signal"(acrack)isinfluencedbytheirbias,ratherthanjusttheirvisualsensitivity.Ifthefactoryimposesstrictpenaltiesforlettingdefectivebottlesthrough,theinspectoradoptsa"liberalbias."Inthisstate,theinspectorispronetoreportingacrackevenwhenthereissignificantuncertainty.Thisresultsin"falsealarms,"wheregoodbottlesarerejected,becausetheinspectorisbiasedtowardavoidingthegreaterconsequenceofmissingadefect.Conversely,ifthefocusshiftstoreducingwaste,theinspectoradoptsa"conservativebias."Here,theinspectoronlyreportsacrackifitisunmistakable.Thisleadsto"misses,"whereactualdefectsareignored,becausetheinspectorisbiasedagainstrejectinggoodbottles.Theexampleillustratesthattherateofdetectioncanvarybasedonthepsychologicalbiasregardingthecostsofdifferenttypesoferrors.Task4：学术讲座题听力材料：Professor:Todaywe'lldiscuss"Friction"inphysics.Frictionisaforcethatopposestherelativemotionofsolidsurfacesincontact.It'snotjustanuisance;it'sessentialformovement.Therearetwomaintypeswe'llcover:staticfrictionandkineticfriction.Staticfrictionac