高中英语选择性必修一Unit 4 Body Language 第二课时 基础+综合能力练习

Unit4BodyLanguage第二课时基础+综合能力练习基础过关练习根据首字母或用括号内单词的正确形式填空。1.TheUSDepartmentofAgricultureistryingto(评估)theeconomicimpactoftheflooding.

2.She(倾斜)down,pickeduparockandthrewitintotheriver.

3.Beforegoingintotheirmeeting,thesixforeignministers(摆好姿势)forphotographs.

4.Wethoughtitwasagenuineantique(古董),butitturnedouttobea(/feɪk/).

5.Policehaveappealedforanyonewhowitnessedtheitocontactthem.

II.从方框内选用合适的短语填空（每项限用一次）。1.Theaccusedmaintainedsilencethroughoutthe(try).

2.Ican'tagreetoanythingwithoutmypartner's(approve).

3.Igenerallyfavour(travel)bynight,whentheroadsarequiet.

4.Withtheincreasingburdenofhiswork,hishealthfinallybrokeandhehadtotakeagoodrest.

5.Theyoungactor'sfuturelooksbright—herperformanceinhermostrecentfilmwas(amaze)!

6.Toavoid(cheat),alwaysbuyyourticketattheticketcounter.

7.Ifwearefilledwithdoubtor(angry),wecannotcreateworldpeace.

8.Weareconsidering(pay)avisittotheScienceMuseum.

9.Themostpopularpastimeforanumberofoldpeopleis(play)chess.

10.Sherecovered(slight)butwasreadyfordischarge(出院).

11.Severaltimesshecamecloseto(quit)butwasdissuaded(劝阻)bybusinesspartners.

12.Themanagertoldmethatmydailytaskwas(clean)thefloorsofthebuilding.

Ⅲ.完成句子1.你又热又渴的时候没有什么比一杯冰可乐更好了。(nothing)anicycolawhenyou'rehotandthirsty.

2.我反对汤姆离开。(object;动名词的复合结构)I.

3.我未按时到达,谨致歉意。(arrive)Pleaseacceptmyhumbleapologiesfor.

4.我决定利用一切机会练习英语口语。(employ)IdecidetomyspokenEnglish.

5.他的优秀品质值得赞扬。(deserve)Hisfinequalities.

综合能力提升练习Ⅰ.阅读理解Catscommunicateavarietyofmessagesusingcats'bodylanguage.Examplesincludearching(弓起)theirbacksasasignaloffearorattack,andslowlyblinking(眨)theireyestosignalrelaxation.Theopenmouthwithoutshowingteethsuggestsafeelingofplayfulness.Acatwhichchoosestolieonitsbackshowshappiness,trustandcomfort.Catsshowdissatisfactionbymovingtheirearsback,equaltoahuman'sfrown.Asisthecasewithdogs,atwitching(抽动)tailcanmeanalittleangerwhileatailheldhighsuggestsconfidence.Catswilltwitchtheirtailswhenhuntingorangry,whilealargertwitchsuggestsdispleasure.Theymayalsotwitchtheirtailswhenplaying.Atailheldhighisasignofhappiness,orcanbeusedasagreetingtowardshumansorothercats(usuallycloserelatives)whileahalf-raisedtailshowslesspleasure,andunhappinessisexpressedwithatailheldlow.Somecharacteristicsignals,however,areoftenmisunderstood.Itisimportanttokeepinmindthateachcatmayshowitsfeelingswithdifferentbodylanguage.Forinstance,acatrubbingitsbodyalonganarmoralegofitsownerisnotonlyawaytoattractattentionand,perhaps,awaytoaskforfood;itisalsoawayof“marking”itsownerasitsown.Usuallyacatwithitstailheldhighandtwitchingshowsexcitement,butthisisoftenmistakenforanger.Manypeoplefailoraretooslowtounderstandthesilentbodylanguageofcats.Andtheymayhavethefalseimpressionthatcatsarecold-hearted,unfaithfulornotclever.Tounderstandcats,peoplemustobserveacatcloselyandlearnwhatitsbodysignalstellthem.1.Whichcats'bodylanguageshowsthatacatisrelaxed?A.Lyingonitsstomach.B.Blinkingitseyesslowly.C.Holdingitstailhigh.D.Movingitsearsback.2.Accordingtothepassage,whichiswrong?A.Acatwilltwitchitstailwhenitfeelssleepy.B.Acatwilltwitchitstailwhenitishunting.C.Acatwilltwitchitstailwhenitfeelsangry.D.Acatwilltwitchitstailwhenitisplaying.3.Howmanymeaningsdoesacat'srubbingitsbodyalongitsownerhave?A.2.B.3.C.4.D.5.4.Whatdoesthelastparagraphintendtotellus?A.Manypeopleoftenhavewrongopinionsoncats.B.Itisnoteasytounderstandcats'bodylanguage.C.Everycathasitsownspecialbodylanguage.D.Weshouldlearnmoreaboutcats'bodylanguage.Ⅱ.完形填空OnelittlegirlinDayton,Ohio,hasunknowinglychangedthecultureofherschoolwhenshebecamethefirstandonlydeafstudentintheschool.MoreyBelanger,6,wasdiagnosed(诊断)withararediseasewhenshewasoneyearold.Thediseaseissorarethatitdoesn'tevenhaveaname.Oneofthesideeffectsthediseasecanbringaboutis1loss,whichMoreyhasalreadysuffered.Therefore,shehastousesignlanguageto2.

Whenshereachedtheagetogotoschool,herparentswere3abouthowshecouldreceiveeducationinnormalschools.4,theymetwithDaytonConsolidatedSchool.Theschoolwas5tolearnsignlanguageandprovidetheservicessheneeded.

Still,Morey'smotherShannononly6thattheteachersteachingherdaughterwouldlearnsignlanguage.Neverdidsheimaginethatallthestudentswouldalsolearnit.“Ithas7ourwholefamily,”Shannonsays.

Apartfromherclassroom,Moreyalsogoestothegymclassandthelibrary,andpeoplethroughouttheschoolaretryingtheirbestto8what'sbestforher.

TheschoolmadeeffortstomakeMoreyfeelshewas9andloved.Forexample,ithungsignlanguagepostersinthehallwayandheldpartiesatwhichsignlanguage10weregiven.

“Wedidthesethings11theyaretherightthingstodo.Sheisoneofourstudents,”saysKimSampietro,theschool'sheadteacher.

Butevenifthesethingsweresimplytherightonestodo,nobodyintheschoolcoulddenythe12thatMoreyandtheneedtolearnsignlanguagehavehadontheschool.

“She'sjustbroughtsomethingtoourschoolthatwouldn'thavebeenthere.Ithinkit'sachancetolearnandgrowwhenwehaveachildwhohassomething13,”saysSampietro.“She'llbewiththesameclassthroughthe5thgrade,soIimagineallthesekidswill14tolearnsignlanguage.Itjustmakesherfeellikeshe'spartoftheschoolandshe's15assheis.”

1.A.hearingB.nutritionC.weightD.memory2.A.speakB.practiceC.fightD.communicate3.A.certainB.alarmedC.puzzledD.positive4.A.NormallyB.RegularlyC.SimplyD.Fortunately5.A.anxiousB.willingC.concernedD.generous6.A.expectedB.discoveredC.recognizedD.spotted7.A.confusedB.annoyedC.movedD.stressed8.A.offerB.provideC.gatherD.desire9.A.admiredB.believedC.challengedD.respected10.A.performancesB.explanationsC.interviewsD.themes11.A.ifB.thoughC.becauseD.unless12.A.commentB.effectC.limitationD.resource13.A.extremeB.familiarC.mentalD.different14.A.continueB.volunteerC.decideD.manage15.A.acquiredB.acceptedC.keptD.provedⅢ.语法填空While1(travel)inSweden,Icameacrossanincident,whichmademe2(embarrass).

Oneday,IwaswalkinginthestreetwhenIsawanadorablebabywhowassmilingatme,soItalkedtothemotherandkissedthebabyonthecheek.Tomysurprise,themotherstaredatmeforawhileandthenleft3(angry).WhenIreturnedtothehotel,Isetabout4(learn)somethingaboutbodylanguage.Muchevidencerevealsthatifyouknowlittleaboutbodylanguage,youareunlikelytoenjoythe5(interact)withpeoplefromanothercountry.6weallknow,bodylanguage7(vary)fromculturetoculture.Youmustbewellawareofwhether8isappropriateforyoutodosomethingonsome9(occasion).Inaddition,you'dbetterpayattentiontohowanotherpersonreactstoyourwordsorbodylanguage,sothatyoucanadjustyourself10theculturethere.

1.2.3.4.5.

6.7.8.9.10.

答案基础过关练习Ⅰ.1.assess2.bent3.posed4.fake5.incidentⅡ.1.ing/travelling4.down5.amazing6.beingcheated7.anger8.paying9.playing10.slightly11.quitting12.cleaningⅢ.1.Thereisnothingbetterthan2.objectedtoTom'sleaving3.notarrivingontime4.employeveryopportunitytopractise5.deserve/deservedtobepraised综合能力提升练习Ⅰ.BABDDⅡ.1-5ADCCDB6-10ACBDA11-15CBDABⅢ.1.travelling/eraction6.As7.varies8.it9.occasions10.toUNIT4单元提能强化练Ⅰ.阅读理解AGettingcomputerstounderstandhumanbodylanguageisnosimpletask.Let’sbreakdownthestepstogetagoodunderstandingofwhatyourbodylanguageissaying.First,thecomputerneedstosee.So,itneedsacamera.Butacomputerdoesn’tseelikewedo,anditonlygetsastreamofdatafromthecamera.So,softwarefirsthastorecognisetheshapeofahumanbodyandthenmapoutthekeypointsofourbody.Somepoorsoulshavetoteachacomputerwhatallofourdifferentbodypartslooklikeinlotsofdifferentlightingconditionsandlotsofdifferentbodytypes.Butunderstandingthatanimagecontainsanelbow,aknee,orafacedoesn’tdomuchgood.So,nowthecomputerispayingcloseattentiontoourfacesandourhands.Classifyingemotionsasbodylanguageandfacialexpressionsisliterallyinourgenes,soitcomesprettyeasily.Butcomputersneedtoseeatonofexamplesofanygivenkindofbodylanguage,thentobetoldwhatthatbodylanguageisormeans,andthentheycan,overtime,andwithmoreandmoreexamples,identifythatsameorsimilarstancewiththatemotion.

IfI’maself-drivingcarapproachingacrosswalkandIseeanupheldhandinfrontofme,Icaninferthehumanwantsmetostopastheyintendtocrossthestreet.IfIinsteadseethatsamehumanusingthe“movealong”gesture,that’sastrongindicationthatthepersonwouldprefermetocontinueonmyjourneyinsteadofwaiting.Acarhasjustreadyourbodylanguage.1.Whatisthemostimportantforcomputerstounderstandhumanbodylanguage?A.Acamera.B.Astreamofdata.C.Software. D.Alightingcondition.2.Whyareemotionsdividedintobodylanguageandfacialexpressions?A.Toencouragepeopletoknowaboutgenes.B.Tomakecomputerswatchemotionsclosely.C.Tosavethetimeofanalysingatonofdata.D.Togetcomputerstorecognisethemeasily.3.Whatdoestheunderlinedword“stance”inparagraph4probablymean?A.Attitude. B.Meaning.C.Behaviour. D.Expression.4.Whichofthefollowingcanbethebesttitleforthetext?A.HowComputersReadBodyLanguageB.WhenSelf-drivingCarsWillBeBornC.WhyEmotionsAreofImportanceD.WhattheUnknownFutureHoldsBSilboGomeroisanancientlanguageofwhistlethatenabledpeopletocommunicateacrosslongdistancesbeforetheinventionofthetelephoneorthecomputer.It’snowbeingrevivedonmountainousCanaryIslandsandtheislandofLaGomera,wheretheusuallanguageisSpanish.TheCanaryIslandsgovernmentisprovidingfundingtohelpschoolchildrenonLaGomeratolearnthisancientwhistlinglanguageaspartoftheirheritage.ItsoundslikebirdsongandwasdevelopedthousandsofyearsagobyislanderstoenablethemtocommunicateuptotwomilesacrossLaGomera’svalleys.Inthepast,SilboGomerohasbeenpasseddownfromgenerationtogeneration,buttheislandersfeltembarrassedatthisformofcommunicationwhentheycameintocontactwiththeoutsideworldandmoderntechnology.Itstartedtodieoutwhenthetelephonearrivedandtheislandwasopentotourism.However,thegovernmentrealisedwhatwashappeninganddecidedtomakesurethatitwouldnotbelost.So,since1999SilboGomerohasbeenpartoftheschoolcurriculumandnowabout3,000Gomerochildrenspendatleast25minutesaweeklearningit.Thisisenoughtimeforthebasicstobelearned.ProbablyoriginatingintheAtlasMountainsofNorthAfrica,thelanguagewasbroughttotheislandbysettlers2,500yearsago.ItwasadaptedtoSpanishspeechpatterns,butusestonesratherthanvowelsandconsonants(辅音).Thesearewhistledatdifferentfrequencies(频率)toproduceover4,000words,makingproperconversationspossible.Theimportanceofthelanguageisgrowing.In2003theislandheldthefirstInternationalCongressofWhistledLanguages.ResearchisnowbeingcarriedoutinallplacestowhichGomeranshavetraditionallyemigrated(移居国外)andwhereformsofthelanguagesurvive.TheCanarygovernment’sHistoricalHeritageDepartmenthopestoattractoutsidesupportsothatitwillcontinue.5.Accordingtothepassage,whichofthefollowingisthereasonforthedisappearingofSilboGomero?A.Thelimitedvocabulary.B.Thearrivalofmoderntechnology.C.Gomerans’traditionalemigration.D.Itscomplexspeechpatterns.6.WhatdoweknowaboutSilboGomero?A.ItoriginatedintheislandofLaGomero.B.ItwasadaptedtoEnglishspeechpattern.C.Itwasdevelopedforlong-distancecommunication.D.Ithasmorethan4,000wordsmadeupofvowelsandconsonants.7.InordertosaveSilboGomero,.

A.thelocalgovernmentprovidesfinancialhelpB.studentsspend25minutesdailylearningitC.theislandersbegintodoresearchwhereitoriginatedD.theislandersfrequentlyuseittocommunicatewiththeoutsideworld8.Whatisthepurposeofthetext?A.Tocallonpeopletoprotectculturalheritage.B.ToadvertiseforLaGomera.C.TopromotetheuseofSilboGomero.D.TointroducethedyinglanguageSilboGomero.Ⅱ.七选五Howto“Speed-read”BodyLanguageDuetothepandemic,socialdistancinghasdramaticallychangedthewayweinteractwitheachother,especiallywhenitcomestonon-verbalcommunication.Wearingafacemaskhasquicklybecomethenorm—andthatwilllikelyremainfortheforeseeablefuture.1Howcanwebetterreadbodylanguage,nowthatwe’rewearingmasks?Partoftheanswerliesinthequestionitself.Toooften,weputallourfocusonpeople’sfaces,whenweshouldalsobeobservingthemovementsoftheirentireupperbodies.Thisisespeciallyimportanttoday,sincewedoalotofsocialinteractingthroughvideoplatforms,whereweseeeachothermostlyfromthewaistup.2Herearesometipsonhowtospeed-readit.

TouchingtheneckIfpeoplearetouchingtheir“neckdimple”(thevisibleindentationatthemiddle-frontoftheirneck),itcouldmeanthey’redistressedorinsecure.3

Rubbingthechest4Ifsomeoneisrubbingtheupperpartoftheirchestwithapalmofahand(orevenjustthefingers),itcanindicatediscomfortorconcern.Irecentlyfoundmyselfdoingthiswhendiscussingafamily-member’shealth.

TiltedheadHeadmovementscangoalongwaytowardsshowingwhetherornotsomeoneisfullyengaged,especiallyduringvideoconferencecalls.Aslightlytiltedheaddisplaysawarenessandattentiveness.5

SquintedeyesWeoftensquintoureyeswhenwe’retryingtofocusourvisiononsomethingthat’sfaraway.Butsquintedeyesandafurrowed“glabella”(thepartoftheforeheadaboveandbetweentheeyebrows)canalsobeasignofdisagreementorconfusion.A.Thisisanothersignofstressandanxiety.B.Ifyounoticesomeonedoingthis,trytocomfortthemoreasetheiranxiety.C.Wearingamaskisanormalpartofbeingaroundotherpeople.D.Theyshouldn’tshowfacialexpressionsorusebodylanguageinpublic.E.Bodylanguageisanoutwardreflectionofaperson’semotionalcondition.F.And,whencombinedwithafewnods,itcanshowapprovalofwhat’sbeingsaidorheard.G.Butwithnearlyhalfofthefacehidden,itcanbedifficulttotellwhatapersonisthinkingandfeeling.Ⅲ.完形填空Thebestexampleofuniversallyunderstoodbodylanguagemaybethesmile.Asmilecanopendoorsandteardownwallsamong1.

Ihadorganizedandreorganizedan2withthedentistformonths.Ialsoconfirmedittwiceandcalledthedaybeforeto3allthepaperworkwouldbereadyfortheX-rays.

ThenIarrived.Itwasn’t4atall.TheladythereevenhadnoideawhatIwastalkingabout.I5feltmybloodboil.Iwasgettingsomad.Ididn’tyellatherbutImayaswellhavebecausethe6Iwastalkingtoherwasnotnice.Ispokedowntoherlikeshewasachildandincapable.Itwasnotagoodmoment.Thewholetimeshesmiledandwas7tome.

Onlywheneverythingwasfinally8wasInice.

Isatdowninthewaitingareaand9itall.HowcouldImakeitbetter?HowcouldImakeupformy10behaviouramomentago?Icouldn’t.IcouldgiftherachocolatebarIhadonme,butthisneededmorethanthat.Itneededanhonest11.AndthatwasexactlywhatIgave.

IapologizedforthewayIhadspokentoherandtoldheritwaswrongofme.Sheaccepted.Againwitha12.Ithelpsmebethatwomanwhosmilesandforgivesso13.Idon’tgetitrighteverytime.IcanberudeandwhenIam,Ialmost14myselfforit.Iamnotthatperson,notanymore.YetIcontinuetogrowandcontinueto15.It’struethatsmilevanishedmyangerandopenedadoortounderstanding.

1.A.friends B.strangersC.patients D.relatives2.A.interview B.operationC.experiment D.appointment3.A.conclude B.approveC.ensure D.apply4.A.crowded B.readyC.open D.busy5.A.mildly B.roughlyC.privately D.immediately6.A.habitB.way C.accentD.tune7.A.rude B.attachedC.friendly D.devoted8.A.figured B.addedC.made D.sorted9.A.reflectedon B.workedatC.calledat D.wentthrough10.A.unnecessary B.impoliteC.impossible D.unfair11.A.comment B.promiseC.apology D.suggestion12.A.smile B.hopeC.doubt D.belief13.A.slowly B.easilyC.frequently D.tightly14.A.teachB.forgive C.hateD.see15.A.expand B.reactC.overcome D.learnⅣ.语法填空Eventhoughtheworstofthepandemicseemstobebehindus,videoconferencingappswillprobablyremaininourlives.Unfortunately,communicatingthiswaytendstoleavepeople1.(feel)wornout,and2.StanfordUniversitypaperhasexplainedexactlysomeofthesurprisingreasons.

Forone,videoconferencingshowstheclose-up3.(view)ofpeople’sfaces—peoplewhoallappeartobemakingprolonged(延长的)directeyecontactwithyoubecausethey4.(look)attheirscreens.Duringface-to-faceinteractions,thiskindofbodylanguage5.(mean)foreithercloserelationshipsorconflicts.6.youknowit’sjustabusinessmeetingorafriendlychat,anotherpartofyoumaystillunconsciouslyfindthosenonverbalsignalsnervous.7.(reduce)thissourceofpressure,switchtoaudio-onlymodeor8.(simple)shrinkthewindowsopeople’sheadsdon’tappearsolargeandclose.

Mostvideoconferencingsoftwarealsoshowsyouyourownvideoimage.Seeingyourimagemakesithardtoresistevaluatingyourself,9.isstressfulandoftenlowersyourmood.Thesolution10.thisoneissimple:Hidetheself-viewwindowandfocusinsteadonothersinthemeetingandthetopicofdiscussion.

参考答案UNIT4单元提能强化练Ⅰ.【语篇导读】本文是一篇说明文。文章主要说明了计算机理解人类肢体语言的详细步骤。1.C细节理解题。根据第二段中的“So,softwarefirsthastorecognisetheshapeofahumanbodyandthenmapoutthekeypointsofourbody.”可知,要让计算机理解人类的肢体语言,最重要的是软件。故选C项。2.D推理判断题。根据第三段“Butunderstandingthatanimageesprettyeasily.”以及第四段“Butcomputersneedtoseeaton...sameorsimilarstancewiththatemotion.”可知,因为肘部、膝盖或一张脸的图像对计算机理解人类肢体语言并没有多大好处,所以计算机关注可以传达情绪的脸(面部表情)和手(肢体语言)。因此,把情绪被分为肢体语言和面部表情是为了让计算机识别它们背后的意义。故选D项。3.B词义猜测题。根据画线词所在的上下文“Butcomputers...sameorsimilarstancewiththatemotion.”可知,计算机识别的是特定肢体语言背后的意义;通过越来越多肢体语言的例子,计算机可以识别出那种肢体语言情绪状况下相同或相似的意思。故画线词意思是“意义”。故选B项。4.A主旨大意题。根据第一段“Gettingcomputerstounderstand...whatyourbodylanguageissaying.”并结合全文内容可知,本文主要说明了计算机理解人类肢体语言的详细步骤。A项“计算机是如何识别肢体语言的”最符合本文大意。故选A项。【语篇导读】本文是一篇说明文。文章主要介绍了LaGomera岛上的口哨语SilboGomero。5.B细节理解题。根据第三段中的“Itstartedtodieoutwhenthetelephonearrivedandtheislandwasopentotourism.”可知,现代技术的到来是SilboGomero濒临消亡的原因。故选B项。6.C细节理解题。根据第二段中的“ItsoundslikebirdsongandwasdevelopedthousandsofyearsagobyislanderstoenablethemtocommunicateuptotwomilesacrossLaGomera’svalleys.”可知,SilboGomero被发明出来是为了进行远距离交流。故选C项。7.A细节理解题。根据第二段中的“TheCanaryIslandsgovernmentisprovidingfundingtohelpschoolchildrenonLaGomeratolearnthisancientwhistlinglanguageaspartoftheirheritage.”可知,为了拯救SilboGomero,当地政府提供了财政援助。故选A项。8.D推理判断题。根据第一段中的“SilboGomeroisanancientlanguageofwhistlethatenabledpeopletocommunicateacrosslongdistancesbeforetheinventionofthetelephoneorthecomputer.”以及文章内容可知,本文写作的目的是介绍LaGomera岛上濒临消亡的口哨语SilboGomero。故选D项。Ⅱ.【语篇导读】本文是一篇说明文。在疫情期间,社交距离极大地改变了我们在非语言交流方面的方式。对此文章给出了快速阅读肢体语言的建议。1.G上文“Wearingafacemaskhasquicklybecomethenorm—andthatwilllikelyremainfortheforeseeablefuture.”说明人们戴口罩时脸会被隐藏一半。下文“Howcanwebetterreadbodylanguage,nowthatwe’rewearingmasks?”说明,在脸被隐藏的情况下,我们仍旧要辨别人们所想。G项“但是,由于隐藏了近一半的脸,因此很难分辨出一个人的想法和感受”承上启下,符合语境。故选G项。2.E根据上文“Toooften,weputallourfocusonpeople’sfaces,whenweshouldalsobeobservingthemovementsoftheirentireupperbodies.”可知,在观察不到脸的同时,我们应注意观察人们的肢体语言,通过肢体语言来解读人们的心理。E项“肢体语言是一个人情绪状况的外在反映”承接上文。故选E项。3.B根据上文“Ifpeoplearetouchingtheir‘neckdimple’(thevisibleindentationatthemiddle-frontoftheirneck),itcouldmeanthey’redistressedorinsecure.”可知,一个人在感到焦虑或不安时会摸脖子的凹陷处。B项中的“this”指代触摸这个部位,而“尝试安慰他们或缓解他们的焦虑”是对此提出的建议,符合语境。故选B项。4.A根据下文“Ifsomeoneisrubbingtheupperpartoftheirchestwithapalmofahand(orevenjustthefingers),itcanindicatediscomfortorconcern.”可知,本段落承接上段内容,介绍的是压力和焦虑的另一个迹象以及相应的建议。故选A项。5.F根据上文“Headmovementscan...displaysawarenessandattentiveness.”可知,上文说的是人们在专注时的头部动作。F项“当与一些点头结合时,它可以表示对所说或听到的内容的赞同”符合语境。故选F项。Ⅲ.【语篇导读】本文是一篇记叙文。作者某次去看牙医,去之前已经预