《E时代大学英语-视听说教程3》课件-Unit-3

UnitThreeToLive,toLearnPartI

Warm-upPartIIIn-ClassListening

UnderstandingShortConversations

UnderstandingaLongConversation

UnderstandingaPassage

UnderstandingNewsReports

ReportOne

ReportTwo

UnderstandingaMovieClip

Speaking

Self-CheckingPartⅢ

After-ClassListening

TaskOne

TaskTwo

TaskThreePartIWarm-up1Nowyouwillhearsomesayingsabouteducation.Whenyouarelistening,trytounderstandeachsayingandcompletethemissinginformation.PartⅠWarm-up1.Learningdoesnotstop________________________,unlesshislearningpoweratrophiesbecausehedoesnotuseit.—RobertHutchins2.Thatwewantis_________________________________________,andnotknowledgeinpursuitofchild.—BernardShaw3.Educationisthatwhichremainswhenonehasforgotteneverything________________________.—EinsteinaslongasamanlivestoseethechildinpursuitofknowledgehelearnedinschoolNowyouwillhearsomesayings2Nowyouwillhearsomesayingsaboutwomen.Whenyouarelistening,trytounderstandeachsayingandcompletethemissinginformation.PartⅠWarm-up4.Peopledie,butbooksneverdie.Nomanandnoforcecan_____________.—FranklinRoosevelt5.Educationmakesapeopleeasytolead,butdifficult_________________;easytogovern,butimpossibleto____________________.—HeryPeter,LordBrougham6.Everypersonhastwoeducations,onewhichhereceivesfromothers,andone,moreimportantwhich____________________.—E.GibbonabolishmemorytodriveenslavehegiveshimselfNowyouwillhearsomesayings3UnderstandingShortConversations☆VocabularyBand

PartII

In-ClassListeningpathetic[pə'θetɪk]adj.causingonetofeelpityorsadness招人怜悯的；可悲的sympathy['sɪmpəθɪ]n.sharingthefeelingsofothers;feelingofpityandsorrow(forsomebody)同情；同情心institute['ɪnstɪtjuːt]n.asocietyororganizationforaspecial(usuallysocialprofessionaloreducational)purpose会；社；

学会；协会；会所；会址；社址eternity[ɪ'tɜːnɪtɪ]n.timewithoutend;stateortimeoflifeafterdeath

永恒；来世；永生agency['eɪdʒ(ə)nsɪ]n.businessorplaceofbusinessprovidinga(usuallyspecified)service经销；代办；代理；经销处；代理

处UnderstandingShortConversati4Nowyouwillhearfiveshortconversations.Aftereachconversation,youwillhearaquestion.Listencarefullyandchoosethebestanswerfromthefourpossiblechoices.

PartII

In-ClassListening1.A.Themanalwaysfallsasleepinclass.B.ThemanlearnsalotinMr.Han’sclass.D.Themandoesn’tlikeMr.Han.2.B.ItisapitythatGeorgegotcaughtcheating.C.ShefeelssorryforGeorge.D.GeorgeshouldlearnhardforthePhysicsexam.3.A.ChildreninChinacanenjoytheirchildhoodhappily.B.AllthechildreninChinaneedtoattendspecialinstitutesafterschool.

D.ChildreninChinaarefreetodotheirschoolwork.C.Themandoesn’tquiteagreewithwhatthewomansaid.A.Theyneedn’tshowsympathyforGeorge.C.ChildreninChinahavealotofschoolworktodo.Nowyouwillhearfiveshortc5Nowyouwillhearfiveshortconversations.Aftereachconversation,youwillhearaquestion.Listencarefullyandchoosethebestanswerfromthefourpossiblechoices.

PartII

In-ClassListening4.A.TheyaretalkingaboutwhattheChineseteacherlookslike.B.TheyaretalkingabouthowtheChineseteacheraffectstheman’slife.D.Theyaretalkingaboutthepastpeopleandthingsthemancanremember.5.A.Gototheuniversityheoncestudiedin.C.Lookupinformationbyherself.D.Chooseauniversityshelikesbest.C.Theyaretalkingabouttheinfluenceofeducation.B.Consultanoverseaeducationagency.Nowyouwillhearfiveshortc6Tapescript

PartII

In-ClassListening

PartIIIn-ClassListenin7UnderstandingaLongConversation☆VocabularyBand

PartII

In-ClassListeningcorrespondent[kɒrɪ'spɒnd(ə)nt]n.personwhocontributesnewsorcommentsregularlytoanewspaper,radiostation,etc.especiallyfromabroad〔报刊、播送电台等的〕通讯员，记者〔尤指派驻国外的〕tough[tʌf]adj.difficult困难的innovation[ˌɪnə'veɪʃn]n.innovating革新；改革；创新；引入新事物reserved[rɪ'zɜːvd]adj.(ofapersonorhischaracter)slowtoshowfeelingsorexpressopinions〔指人或性格〕矜持的，寡言的，内向的awareness[ə'weənəs]n.knowledgeorrealizationofsomeoneorsomething明白；觉察；意识responsibility[rɪˌspɒnsɪ'bɪlɪtɪ]n.beingresponsibleoraccountable责任；负责benefit['benɪfɪt]v.dogoodto(sb./sth.)使〔某人/某事物〕受益UnderstandingaLongConversat8ⅠNowyouwillhearalongconversation.Aftertheconversation,youwillhearfivequestions.Listencarefullyandtakedownsomenecessarynotesifpossibleandchoosethebestanswerfromthefourpossiblechoices.

PartII

In-ClassListening1.A.Professorandstudent.C.Husbandandwife.D.ColleaguesinaTVstation.2.A.Itisfairandperfectwithoutanydisadvantages.B.Itshouldbereplacedbyadvancedwesterneducationalsystem.

D.Itcanenableeveryonetogotocollege.3.A.Educationhasforitsobjecttheformationofcharacter.C.Realeducationhelpspeopletoknowwhotheyareandwhatkindofpeopletheywanttobe.D.Peopleunderstandwhatresponsibilitytheyshouldtakeandwhatcontributiontheycanmake.B.Educatorandjournalist.C.Itmayleadtotheshortageofinnovationofthenewgeneration.B.Knowledgeisallwhatpeopleshouldpursueinschool.ⅠNowyouwillhearalongcon9ⅠNowyouwillhearalongconversation.Aftertheconversation,youwillhearfivequestions.Listencarefullyandtakedownsomenecessarynotesifpossibleandchoosethebestanswerfromthefourpossiblechoices.

PartII

In-ClassListening4.B.Themanisquitesatisfiedwiththepresenteducationalsystem.C.Thewomandoesn’tagreewithwhatthemansaid.D.Thewomancannotunderstandtheman’sideas.5.A.Thingspeoplecanlearnatschool.B.Thecollegeentranceexamination.D.Measurestoperfectthepresenteducationsystem.A.Themanisunsatisfiedwiththepresenteducationalsystem.C.Thepresenteducationalsystemandtheman’sunderstandingofidealeducation.ⅠNowyouwillhearalongcon10Tapescript

PartII

In-ClassListening

PartIIIn-ClassListenin11ⅡListentotheconversationagain,discusswithyourpartners,andthencompletethefollowingmissinginformationbaseduponthenotesyou’vetaken.

PartII

In-ClassListeningAsacorrespondent,thewomanfrom(1)________________askssomequestionstotheman.Atfirst,themanthinksit’sreallya(2)__________question.Buthestillshareshisideasaboutthepresenteducationalsystemwithher.Despitethebenefitshegainsunderthepresentsystem,heexpresseshisreservedideathatitleadstoChinesestudents’lackofspiritofinnovationand(3)______________________.Healsoexpresseshisworrythatthenewgenerationmaybeshortof(4)____________anditishightimeweshouldtryourutmostto(5)____________________________ofoureducation.Thenthemanquotesasayingtodescribetheidealeducationinhismind.Heagreesthateducationhasforitsobject(6)___________________________.Intheendoftheconversation,thewomanappreciateshisideasandexpressesherthankstotheman.alocalTVstationtoughawarenessofcreationinnovationchangethepresentsituationtheformationofcharacterⅡListentotheconversationa12UnderstandingaPassage☆VocabularyBand

PartII

In-ClassListeningpeer[pɪə]n.(usuallypl.)personwhoisthesameageasanother同龄人average['æv(ə)rɪdʒ]adj.foundbycalculatingtheaverage平均的overall['əʊvərɔːl]adj.includingeverything;total包括一切的；全部的；总计的qualify['kwɒlɪfaɪ]v.haveorgive(someone)thequalities,training,etc.thatarenecessaryorsuitable(forsomething)〔使〕〔某人〕具有资格；给〔某人〕某种资格；〔使〕合格pupil['pjuːp(ə)l]n.person,esp.achild,whoistaughtinschoolorprivately学生；〔尤指〕小学生nurture['nɜːtʃə]v.careforandeducatea(child)养育，教养，教育〔儿童〕BohuntSchool博航特中学Hampshire汉普郡UnderstandingaPassage☆Vocab13ⅠNowyouwillhearapassage.Afterthepassage,youwillhearfivequestions.Listencarefullyandtakedownsomenecessarynotesifpossibleandchoosethebestanswerfromthefourpossiblechoices.

PartII

In-ClassListening1.A.ItaimsatprovingthatChinesestudentsarebetterthanBritishstudents.C.ItaimsatfindingoutthatBritishteachersarenobetterthanChineseteachers.D.Itaimsatfiguringoutwhicheducationsystemisbetter.2.A.FiveChineseteacherstakechargeoftheeducationof50students.B.Studentsofdifferentabilitiesstudytogether.D.Theexperimentlastsforfourweeks.3.B.ThestudentsinChineseSchooldobetterinallsubjectsthantheiryeargroup.C.ThestudentstaughtbytheirregularBohuntsteachersarenotintelligentenough.D.EachstudentintheChineseSchoolachievedanabout10%higheraveragemarkthantheirBritishclassmatesacrossmathsandscience.B.ItaimsatcomparingtheBritishandtheChineseschoolsystems.C.Thestudentslearntogetherinoneclassroomfor12days.A.OverallthestudentsintheChineseSchoolreachedanabout10%higheraveragemarkthantheirpeersacrossmathsandscience.ⅠNowyouwillhearapassage.14

PartII

In-ClassListening4.A.Theresultsarefairandacceptable.B.TheyareunsatisfiedwiththeresultsthatthereisahigherperformancelevelwithintheChinesegroup.C.Theyclaimthatnodegreeofseparationbetweenthegroupsappears.

5.A.He’dratherbeinaprisonifhecanenjoyhischildhood.B.BritishstudentsdoneedalongerdayatschoollikeChinesestudents.C.Britishstudentsdon’trespecttheirteachers.D.Theykeepreservedopinionsabouttheresultsandfindings.D.Despitetheresult,hestillquestionstheChinesewayofteaching.ⅠNowyouwillhearapassage.Afterthepassage,youwillhearfivequestions.Listencarefullyandtakedownsomenecessarynotesifpossibleandchoosethebestanswerfromthefourpossiblechoices.

PartIIIn-ClassListenin15Tapescript

PartII

In-ClassListening

PartIIIn-ClassListenin16ⅡListentothepassageagainandcompletethefollowingmissinginformationbaseduponthenotesyou’vetaken.

PartII

In-ClassListening1.BritishpupilstaughtbyChineseteachersarebetterthan________________inaseriesofexamssetbyanindependentresearchbody.2.Learningtogetherfor12hoursadayinoneclassroom,thestudents____________________wereputthroughaChinesestyleeducationsystem.3.Theresultsandfindingsare________________andcanonlybeused______________________.4.ThewaythattheChinesestudents______________________issomethingweoughttohaveinthiscountry.5.TheChineseschoolworkswithchildrenwhoarealready__________________,whoarealready________________.Itdoeschallengethemostablepupilsbutdoesitdoit___________________?theirpeersofdifferentabilitiesnotrefinedinverybroadtermsrespecttheirteachersbrightmotivatedinanurturingwayⅡListentothepassageagai17UnderstandingNewsReports☆VocabularyBand

PartII

In-ClassListeningrebel['reb(ə)l]n.personwhofightsagainst,orrefusestoserve,theestablishedgovernment反政府的人；拒不为政府效劳的人；反叛者；造反者demolish[dɪ'mɒlɪʃ]v.pullorknockdown(abuilding,etc.)拆毁，撤除〔建筑物等〕abandon[ə'bænd(ə)n]v.goawayfrom(apersonorthingorplace)notintendingtoreturn离开〔某人、某物或某地〕而不返回facility[fə'sɪləti]n.allthelecturers,etc.inoneofthedepartmentsinauniversity〔大学的某系、科、院的〕全体教员property['prɒpətɪ]n.landandbuildings;realestate房地产；不动产rank[ræŋk]v.placesomebodyorsomethinginarank;gradesomebodyorsomethingaccordingtoquality,achievement,etc.将某人/某事物置入行列中；〔按特性、成就等〕将某人/某事物分等级UnderstandingNewsReports☆Vo18UnderstandingNewsReports☆VocabularyBand

PartII

In-ClassListeningprimary['praɪm(ə)rɪ]adj.oforforprimaryeducation初等教育的secondary['sek(ə)nd(ə)rɪ]adj.followingprimaryor(intheU.S.)elementaryorjuniorhighschools中等教育的deal[diːl]n.agreement,especiallyinbusiness,oncertaintermsforbuyingordoingsomething协议；〔尤指〕交易deprived[dɪ'praɪvd]adj.withoutthenormalbenefitsofadequatefood,housing,healthcare,etc.贫困的；穷苦的borough['bʌrə]n.atown,oradistrictwithinalargecity,whichhasitsowncouncil,government,orlocalservices区；自治的市镇mayor[meə]n.headofthecouncilofacityorborough,usuallyelectedyearly市长persist[pə'sɪst]v.continuetoexist持续；存留UnderstandingNewsReports☆Vo19UnderstandingNewsReports☆VocabularyBand

PartII

In-ClassListeningbreakout(ofviolentevents)startsuddenly〔指剧烈事件〕突然发生Unicefabbr.UnitedNationsInternationalChildren’sEmergencyFund联合国儿童基金会BBCabbr.BritishBroadcastingCorporation英国播送公司SouthSudann.南苏丹Nigern.尼日尔〔非洲中西部国家〕Afghanistann.阿富汗〔国家名称，位于亚洲〕BorisJohnson〔人名〕鲍里斯·约翰逊NUTabbr.NationUnionofTeachers〔英国〕全国教师联合会UnderstandingNewsReports☆Vo20ReportOneⅠNowyouwillhearanewsreport.Afterthenewsreport,youwillheartwoquestions.Listencarefullyandchoosethebestanswerfromthefourpossiblechoices.

PartII

In-ClassListening1.A.Onethird.B.Aquarter.D.Morethantwothirds.2.B.Oneineight.C.About41%.D.About40%.C.Morethanhalf.A.Oneinten.ReportOne

PartIIIn-Clas21

PartII

In-ClassListeningTapescriptMorethanhalfofchildreninSouthSudanarenotinschool,thehighestproportioninanycountry,UNchildren’sagencyUnicefhassaid.Governmentforceshavebeenbattlingrebelsforthepasttwoyears,althoughapeacedealwassignedinAugust.Nigerisaclosesecond,with47%unabletoattendschool,followedbySudan(41%)andAfghanistan(40%).Worldwide,some24millionchildrenofmorethan109millionlivinginnationsatwararenotinschool,Unicefsaid.Evenbeforetheconflictbegan,1.4millionchildrenwerealreadymissingclassinSouthSudan,Unicefsaid.Sincethewarbrokeout,morethan800schoolshavebeendemolishedandmorethan400,000childrenhadtoabandontheirclassrooms,theagencysaid.Despitethepeaceagreement,violencepersistsinsomeareas.OnlyoneintenSouthSudanesestudentswhoenterschoolfinishprimaryeducationamidashortageoffacilitiesandtrainedteachers,saidPhuongTNguyen,Unicef’schiefofeducationforSouthSudan.Question1:AccordingtoUNchildren’sagencyUnicef,howmanychildreninSouthSudanarenotinschool?Question2:AccordingtoPhuongTNguyen,howmanySouthSudanesestudentsenteringschoolfinishprimaryeducation?

PartIIIn-ClassListenin22ⅡListentothenewsreportagainandcompletethemissinginformationtoformcompleteanswerstothefollowingquestions.

PartII

In-ClassListening1.Whathavethegovernmentforcesbeendoinginthepasttwoyears?Governmentforceshavebeen_______________forthepasttwoyears,althoughapeacedealwassignedinAugust.2.WhatdidUniceftellusinthenews?About______________childrenofmorethan______________livinginnationsatwararenotinschool,Unicefsaid.3.Accordingtotheagency,whathashappenedsincethewarbrokeout?Sincethewarbrokeout,morethan800schools_______________________andmorethan400,000childrenhadto____________________________,theagencysaid.battlingrebels24million109millionhavebeendemolishedabandontheirclassroomsⅡListentothenewsreportag23ReportTwoⅠNowyouwillhearanewsreport.Afterthenewsreport,youwillheartwhreequestions.Listencarefullyandchoosethebestanswerfromthefourpossiblechoices.

PartII

In-ClassListening1.A.Sevenofthe11schoolswillbeinboroughs.C.Thereare58freeschoolsinLondonoutofanationaltotalof174.D.Londonneedsmoreplacesbutdevelopingfreeschoolsisnottheanswer.2.B.Anofficerfromgovernment.C.AjournalistfromBBC.D.ThemayorofLondon.3.A.Morefreeschoolsfundedbystateshouldbedeveloped.B.ThereisanurgentneedforfreeschoolsinLondon.C.It’sunnecessarytodevelopfreeschoolsinLondon.B.Thenewschoolsincludethreeprimaries,sevensecondariesandoneall-throughschool.A.AteacherfromNUT.D.Developingfreeschoolsisnotaneffectiveway.ReportTwo

PartIIIn-Clas24Tapescript

PartII

In-ClassListening

PartIIIn-ClassListenin25ⅡListentothenewsreportagainandcompletethemissinginformationtoformcompleteanswerstothefollowingquestions.

PartII

In-ClassListening1.Whohasfreedupthepubliclandlikedisusedpolicestations?_____________________hasfreeduppubliclyownedlandandproperty,includingdisusedpolicestations.2.Wherewillthenewschoolsbedeveloped?Thenewschoolswillbedevelopedin______________________,onGreaterLondonAuthority-ownedlandandintheQueenElizabethOlympicPark.ThemayorofLondonformerpolicestationsⅡListentothenewsreportag26UnderstandingaMovieClip☆VocabularyBand

PartII

In-ClassListeningsingle-minded['siŋglˌ'maindid]adj.havingorconcentratingononeaim,purpose,etc.一心一意的；专心致志的whisper['wɪspə]v.speaksoftly,usingthebreathbutwithoutvibratingthevocalcords声带不震动而用呼

吸声说话；低语；小声说pedigree['pedɪgriː]n.lineofancestors世系conservative[kən'sɜːvətɪv]adj.opposedtogreatorsuddenchange反对

做大的或突然的改变的；保守的；守旧的academic[ækə'demɪk]adj.(learningorteachingin)schools,colleges,etc.学校的；学院的WellesleyCollege韦尔斯利女子学院UnderstandingaMovieClip☆Vo27

PartII

In-ClassListeningⅠNowyouwillhearadialogfromMonaLisaSmileandtrytocompletethemissinginformation.

PartIIIn-ClassListenin28

PartII

In-ClassListening(BettyWarren:Allherlife,shehadwantedtoteachatWellesleyCollege.So,whenapositionopenedintheArtHistorydepartment,shepursuedit(1)__________________untilshewashired.ItwaswhisperedthatKatherineWatson,a(2)__________________fromOaklandStatemadeupinbrainswhatshelackedinpedigree.WhichwaswhythisbohemianfromCaliforniawasonherwayto(3)________________________collegeinthenation.)Katherine:(Excuseme,please.)Oh,sorry!Excuseme.Thebus?Anonymous:Keepwalking,ma’am.Katherine:Thankyou.(BettyWarren:ButKatherineWatsondidn’tcometoWellesleytofitin.ShecametoWellesleybecauseshewantedto(4)__________________.)single-mindedlyfirst-yearteacherthemostconservativemakeadifference

PartIIIn-ClassListenin29

PartII

In-ClassListeningBill:Violet!Violet:MyfavoriteItalianprofessor.Nicesummer?Bill:Terrific,thanks.Who’sthatoverthere?Violet:Where?Oh,KatherineWatson.Newteacher.ArtHistory.I’m(5)_________tomeether.President:Whoknocksatthe(6)______________________?Julia:Iameverywoman.President:Whatdoyouseek?Julia:To(7)______________________throughhardworkanddedicatemylifetoknowledge.President:Thenyouarewelcome.Allwomenwhoseekto(8)___________________canenterhere.Inowdeclaretheacademicyearbegun.dyingDoorofLearningawakenmyspiritfollowyou

PartIIIn-ClassListenin30

PartII

In-ClassListeningⅡ

Nowlistentothemoviedialogagain.Readthewordscloselyafterthespeakersoastoimproveyourshort-termmemory,pronunciation,stressandintonationbyimitatingwhatyouhear.

PartIIIn-ClassListenin31

PartII

In-ClassListeningⅢ

Nowrole-playthecharactersinthemovieclipanddiscussaboutwomen’spowerineducation.

PartIIIn-ClassListenin32

PartII

In-ClassListeningSpeaking:ShowingAgreementandDisagreement—InputProcess:ⅠReadthefollowingexpressionforshowingcomparison.Trytomemorizetheminyourmind.1.Someareinfavoroftheideathatthepresenteducationalsystemshouldgetimproved.2.Mostpeopleapproveoftheideathattraditionalformaleducationcanneverbereplacedbyonlinestudy.3.Ican’tagreewithyoumore.4.Actually,Ivoteforthelatteropinionthatstudyingabroadataveryyoungageisadouble-edgedsword.5.Iagreewithwhatyousaidaboutthecollegeentranceexamination.6.Idothink/holdtheideathateducationisnotthefillingofapailbutthelightingofafire.7.Johnisfortheideathatreadingcanbroadenone’shorizons.

PartIIIn-ClassListenin33

PartII

In-ClassListeningSpeaking:ShowingAgreementandDisagreement—InputProcess:ⅡReadthefollowingexpressionforshowingcontrast.Trytomemorizetheminyourmind.1.Somepeopledon’tthinkit’sagoodideatolearnEnglishatanearlyage.2.Quiteanumberofeducatorsareagainsttheideathatstudentsshouldgotosomeinstitutesafterschool.3.Afewpeopledisapproveoftakingstudentsouttohaveclasses.4.SomeoftheteacherswouldnotliketogivetheirsupporttoabolishingP.E.class.5.MostparentsdisagreethatthePhysicsteacherjudgestheirchildrenbymarks.6.Peopleinmodernsocietyareopposedtotheideathatit’sunnecessaryforgirlstogotoschool.

PartIIIn-ClassListenin34

PartII

In-ClassListeningShowingAgreementandDisagreement—OutputProcessNowchooseoneofthefollowingtopicsanddiscusswithyourpartner.Thenmakeaconversationoraspeech.Youcanchooseoneormoreoftheexpressionslistedintheprevioussectioninyourconversationorspeech.

PartIIIn-ClassListenin35

PartII

In-ClassListeningSelf-CheckingWritedownthewordsyouhearandchecktheirspellings.Howmanypointscanyouget?1.____________2.____________3.____________4.____________5.____________6.____________7.____________8.____________9.____________10.___________11.___________12.___________13.___________14.___________15.___________16.___________17.___________18.___________19.___________20.___________21.___________22.___________institute agency eternitysympathy pathetic benefitinnovation responsibility toughcorrespondent awareness reservedpeer nurture averagequalify overall pupilsingle-minded academic whisperconservative

PartIIIn-ClassListenin36ⅠListentoapassageandchoosethebestanswerstothequestionsyouhearafterthepassage.1.A.Protectionisoftenneglectedbychildren.B.Itcannotbefullyrestoredoncedamaged.

D.Therearevariouswaystoprotectit.2.A.Itmaymakethewearerfeeltired.B.Itwillgraduallyweakentheeyesofadults.D.Itcanpermanentlychangetheeyestructure..3.A.Itcanneverbedonewithhightechnology.B.Itisthebestwaytorestoredamagedeyesight.C.Itisamajorachievementineyesurgery.TaskOneC.Therearemanyfalsenotionsaboutit.C.Itcanleadtothelossofvisioninchildren.D.Itcanonlybepartlyaccomplishednow.

PartⅢAfter-ClassListeningⅠListentoapassageandchoo37

PartⅢAfter-ClassListeningTapescript

PartⅢAfter-ClassListenin38

PartⅢAfter-ClassListeningTaskOneⅡListentothepassageagainandcompletethefollowingmissinginformation.1.Thereisno(1)____________toshowthatthestructureofeyesischangedbywearingglassesatayoungage.Wearingthewrongglasses,however,can