2024届北京师大第二附中高三考前热身英语试卷含解析

2024届北京师大第二附中高三考前热身英语试卷请考生注意：1．请用2B铅笔将选择题答案涂填在答题纸相应位置上，请用0．5毫米及以上黑色字迹的钢笔或签字笔将主观题的答案写在答题纸相应的答题区内。写在试题卷、草稿纸上均无效。2．答题前，认真阅读答题纸上的《注意事项》，按规定答题。第一部分（共20小题，每小题1.5分，满分30分）1．WeallChinesepeoplearecalledontolearnfromLeiFeng,_______wethinksetagoodexampletoallofus.A．whose B．whoC．that D．whom2．AgrandbanquetwasheldbyElizabethII_____PresidentXi’scurrentstatevisittotheUK.A．intermsofB．inhonorofC．infavorofD．inmemoryof3．Whyaresomebrandsmorepopularthanothers______theproductsareofsimilarquality?A．asthough B．evenif C．sothat D．incase4．Withthedevelopmentofeconomy，ourincomehasincreased________10%inlessthanayear.A．forB．byC．onD．at5．Somepre-schoolchildrengotoadaycarecenter,__________theylearnsimplegamesandsongs.A．then B．there C．while D．where6．—“DoyoumindifIlookatyournotes?”—“Ofcoursenot._______.”A．NoproblemB．BemyguestC．WithpleasureD．Notatall7．—Tony_______whatIdidannoyingthoughhedidn’tsayanything.—Soyouthinkyouwillhavetomakeanapology?A．couldfind B．shouldhavefoundC．mightfind D．musthavefound8．Janewenttoherteacherjustnow.She________aboutthesolutiontotheproblem.A．wonderedB．waswonderingC．hadwonderedD．wouldwonder9．---Icannot_____whatIhavedonetoannoyJessica.---Noworries.Sheiskindofsensitive.A．turnout B．makeout C．putout D．leaveout10．---HowwasyourtriptoXi'anlastmonth？--_____________.Itwasrainingcatsanddogsduringmystaythere.A．Wonderful B．ExcitingC．Notbad D．Itcouldn'tbeworse11．——HowdidyoufindyourtriptoWaterParkinthesummerof2016?——Ithoroughlyenjoyedit.Itwas________thanIexpected.A．evenmuchinteresting B．farmoreinterestingC．sofarinteresting D．farfrominteresting12．AstormburiedIllinoisunderseveralinchesofsnowonTuesday,______atleast100peopledeadintrafficaccidents.A．toleave B．leaveC．left D．leaving13．Havinglostsomethinginthecloakroom，Iwentinsidetogetit，andfoundRoy________thepocketsofpeople’scoats.A．goingaround B．goingafterC．goingagainst D．goingthrough14．﹣Mom，I'llstayintoaccompanymygrandpathisevening．﹣________!A．Withpleasure B．NevermindC．Suityourself D．Itdepends15．Atthattime,themovie“ShaolinTemple”,_________LiLianjieplaysthestarringrole,drewtheworld’sattentiontoChineseKungfu.A．where B．when C．that D．which16．Mr.Smithdidn’tunderstand_____madehissonsoupsetthatevening.A．whatwasit B．whyitwasthis C．howthatwas D．whatitwasthat17．Hewrotealetter________heexplainedwhathadhappenedintheaccident.A．that B．whichC．where D．what18．Marylikedtolookbackonherhigh—schooldays，shethoughtwerethehappiestinherlife．A．that B．what C．which D．when19．—NextMondayismybirthday.—Isthatso?______A．Ican’tbelievemyears.

B．I’msogladtohearthat.C．Whatpresentsdoyouwant?

D．Manyhappyreturnsoftheday!20．Theywereabroadduringthemonthswhenwewerecarryingouttheinvestigation,orthey__________toourhelp.A．wouldhavecome B．couldcomeC．havecome D．hadcome第二部分阅读理解（满分40分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。21．（6分）KazuoIshiguro,whowonthe2017NobelPrizeinLiterature,hasanumberofstringstohisbow,orratherhisguitar.The64-year-oldisworld-famousasawriteroffiction,buthisearlydreamwastobeagreatsingerandsongwriter,like2016’swinner,BobDylan.Ashisnameindicates,IshigurocomesfromaJapanesebackground,althoughhecametoBritainfromJapanattheageof5andisaBritishcitizenwhowritesinEnglish.HewaseducatedattheUniversityofEastAnglia,aschoolthathasbecomeknownfortrainingwriters.Ishiguro’swritingishighlyself-contained.ThiscertainlygiveshiswritingaqualityincommonwiththatofJaneAusten,anauthortowhomheisoftencompared.ThebestexampleofthisishisnovelTheRemainsoftheDay,whichlaterbecameasuccessfulfilm.Thecentralcharacterofthebookisabutler(男管家)calledStevens.HeisaloyalservanttoanEnglishlord,andacharacterwhosomepeoplemightcallrepressed.Hemissesoutonaffectionandlovebecausehewillnotadmithisfeelingstoanyone.Wehavetoreadbetweenthelinestouncoverthe＂real＂story,whichisn’tquitetheonethebutleristelling.Stevensfindsitachallengetocommunicate,andcommunicationisoftenathemeinIshiguro’snovels.Inthisauthor’sworks,thereisagapbetweenourfeelingsandourabilitytocommunicatethem.TheNobelCommitteestresseditwhentalkingaboutIshiguro’sworks:Thewriterhasuncoveredtheabyss(深渊)beneathourunrealsenseofconnectionwiththeworld.1、WhatdidIshigurowanttobeinthebeginning?A．Afamouswriter. B．Aguitarplayer.C．AsecondBobDylan. D．Asingerandsongwriter.2、WhyisthestorynotquitetheoneStevenstellsinTheRemainsoftheDay?A．Becauseheisnotallowedtotellthetruth.B．Becausehemissesoutonwhathedesires.C．Becausehedoesn’texpresshimselftruly.D．Becausehehaslowsocialstatusasaservant.3、Whatdoestheunderlinedword＂it＂referto?A．Theauthor’ssenseoftheworld.B．ThethemeofIshiguro’sworks.C．Thereasonforchoosingthewinner.D．Ourabilitytocommunicatefeelings.4、Whatisthebesttitleforthepassage?A．TheRemainsoftheDayB．QuietwritingstyleofagreatauthorC．KazuoIshiguro,winnerofNobelPrizeinLiteratureD．HowKazuoIshiguro’swritingmadehimtheNobelPrizewinner22．（8分）WaitingForYouHarvardArtMuseums,32QuincyStreetCambridgeMAArtStudyCenterOpenHoursThroughDecember21,theArtStudyCenterwillholdspecialopenhoursonMondays,from1pmto4pm.TheArtStudyCenterislocatedonLevel4.PleasebepreparedtopresentaphotoID．Theworkerswillchargeyou25centsforaccess.Level4willcheckbags,coats,umbrellas,andanyfoodordrink.DoremembertoputthingsinthelockersonLevel1.StudentGuideTourThesetours,designedandledbyHarvardstudentsfromarangeofscientificgroups,focusonanimalsandplantlife.Theyprovidevisitorsauniqueviewintolearningaboutcreatures.PleasemeetintheCalderwoodCourtyard,infrontofthedigitalscreensbetweentheshopandtheadmissionsdesk.Freewithmuseumsadmission.Toursarelimitedto15people;noregistrationrequired.ToursareofferedeveryTuesdayandFridayat2pm,andeverySaturdayandSundayat3pm.NotethattherewillbenotoursonFriday,November27orSaturday,November28,becauseoftheThanks-givingbreak.ArtStudyCenterThepubliciswelcometovisitthemuseums’ArtStudyCenter.However,youneedtoshowthetickets.Thetickets’details:$15Adults$13Seniors(65+)$2Non-Harvardstudents(18+)FreeHarvardfaculty,students,andstaff(plusoneguest)FreeYouthunder18FreeCambridgeresidents(proofofresidencyrequired)1、Whatshouldthevisitorsknowabouttheactivities?A．Anyadultneedsa$15tickettovisittheArtStudyCenter.B．AnyHarvardstaffcanvisittheArtStudyCenterwithafriendforfree.C．VisitorscanjointheStudentGuideTouronSundaymornings.D．Agroupof20visitorsshouldgathertogethertojointheStudentGuideTour.2、Whichinformationcanbefoundinthetext?A．OnecantakehotdogstoLevel4.B．TheArtStudyCenterwillholdspecialtoursonTuesdayandFridayat2pm.C．TheArtStudyCenterneedsregistration.D．NoticketisrequiredfortheStudentGuideTour.3、TheStudentGuideTourmightbeledbystudentsgoodat___________.A．artB．literatureC．scienceD．politics23．（8分）Since2013,Torobo,aroboticarmdesignedtotestthelimitsofartificialintelligence.hashadoneambition—tobeadmittedtotheUniversityofTokyo.However,ithasrepeatedlyfailed.Thisyearwasnoexception.InearlyNovemberTorobotookanexamtoprepareforanall-importantstandardizedtest.WhileTorobo’stotalscoreof525outof950was14pointshigherthanin2015，itsstandardscoreof57.1%wasslightlylower,becausehumanstudentsdidbetterinthe2016test.Thoughthescore，whichishigherthanthenationalaverage,isenoughtogettherobotadmittedtomanyotherfamousJapaneseuniversities,itfallsshortoftheminimumrequiredfortheUniversityofTokyo.AcloseranalysisoftheresultsshowedthatTorobo'snewlyprogrammedabilitytosolvecomplexphysicsproblemshelpedincreaseitsyear-over-yearphysicsscorefrom46.5%to59%.Therobotalsodugdeepintoitsdatabaseofinformationfromtextbooksandwebsitestoobtainanimpressive66.3%inworldhistory.Theaverage60%scoresacquiredinthetwomathsections,werenottooshabbyeither.But，whileToroboisabletohandleknowledge-basedquestionsandonesinvolvingcomplexmathematicalcalculations,ithasahardtimethinkingindependently.Asaresult,therobotisunabletofullyunderstandmultiplesentencesandphrasestoarriveatthelogicalconclusionsrequiredintheEnglishlanguagetests.Thisweaknesswasreflectedintheweakoralandwritingscores,whichcameinat36.2%and50.5%,respectively.Fortunately,afterfourtiringyears,therobot'screatorshavedecidedtofreeTorobofromitsannualtest-takingsuffering,theresearchteamwillinsteadfocusonimprovingtherobot’sabilitytopickoutspecificanswersfrommassivesetsofdata—askillthatledtoitsexcellenthistoryscores.Theybelievetheexpertise(专业技术）willhelpTorobosucceedasanindustrialrobot.1、WhatisthedisadvantageofTorobo?A．Ithasmuchdifficultysearchingforfacts.B．Itdoesn'townlanguageskills.C．Ithasweakindependentthinkingability.D．Itcouldn’tgetthroughtheexams.2、Whatdoestheunderlinedword“it”inthethirdparagraphreferto?A．thescoreB．ToroboC．theUniversityofTokyoD．thenationalaverage3、Whatdidtheexamresultsshow?A．Torobo'sscoredidn’treachthenationalaverage.B．Torobo'sprogrammedabilityimproveditsmathscore.C．Torobowasadmittedtoauniversity.D．Torobodidwellinthehistoryexam.4、Whatisthetextmainlyabout?"A．Subjectsarobotaregoodat.B．Arobot'sperformancesinexams.C．Majorsthataresuitableforarobot.D．Arobot'swaystodealwithexams.24．（8分）3Dprintingisbecomingmoreandmorepopular.Wearenowabletocreatethingsweneedveryquicklyandeasilyusing3Dprinters.Butcanyouimagineprintingfood?Somescientistsaretryingtorevolutionizethediningexperiencebydoingthis.Theyhopethathavinga3Dprinterinthekitchenwillbeascommonasthemicrowaveovenorblender.Scientistssaythatit’llbequiteeasy:yousimplyhavetoselectarecipeandputtherawfood‘inks’intotheprinter.Youcanalsomodifytheinstructionstomakethefoodexactlyhowyouwantit.Thismeansthatitwouldbeveryquickandeasytocreatetastyandnutritiousmeals.Using3Dprinterstocreateyourmealswouldalsobesavingtheenvironment.Therewouldbelessneedfortraditionalgrowing,transportingandpackagingprocessesasfoodproductionwouldbealotmoreefficient.Forexample,alternativeingredients(原料)suchasproteinsfromalgae,beetrootleavesandinsectscouldbeconvertedintotastyproducts.Printingfoodcouldalsohelppeoplewhosufferfromdysphasia(aswallowingdisorder).Theycouldprogramtheprintertoprintsofterversionsoftheirfavoritefoodssothattheywouldnothavetroubleinswallowingthem.However,somepeoplethinkthatafutureof3Dfoodprintingwouldbeadisaster.Itcouldtakeawaymanyjobs,includingthosefrogrowing,transportingandpackagingfood.Imagineaworldwheretherewasnoneedforfarmingorgrowingcropsandthesametastescouldbeprintedfromaraw“foodink”.Likewise,traditionalcafesandrestaurantsmightlosebusiness.Also,thereareconcernsaboutthenutritionalvalueofprintedfood:isitreallypossibletobegetthenutrientsweneedfromfood–basedinksandgels(凝胶)?What’smore,cookingandeatingtogetherwithfamilyandfriendshaslongbeenatraditionalandenjoyableactivity.Itishardtoimagineaworldwherethepleasureofcookingisdeadandmealscanbecreatedatthetouchofabutton.1、Whichofthefollowingbestdescribes3Dfoodprinting?A．Quickandpopular.B．Easyandefficient.C．Nutritiousandtasty.D．Softandconvenient.2、Whydosomethinkthat3Dfoodprintingwouldbeadisaster?A．Traditionalfoodwoulddisappear.B．Manypeoplecouldlosetheirjobs.C．Itwouldaffectthepeople’shealth.D．Wecouldalleatthesamefood.3、Whatcanweinferfromthelastparagraph?A．3Dfoodprintingwillreplacetraditionalcooking.B．Thefutureof3Dfoodprintingisuncertain.C．Itwouldhurtourtraditionoffoodculture.D．3Dfoodprintingwouldbeafailure.4、Whichofthefollowingcanbethebesttitleforthetext?A．3Dfood“printing”:comingtothekitchenB．Can3Dprintingcreateeverything?C．3D—printingfoodwillbeinfashion!D．Thedisadvantageof3Dfoodprinting25．（10分）Toerrishuman.Societyissufferingfromaninabilitytoacknowledgeasmuch.Forindividuals,errorsarepainful.Thetrick,then,istoerrwell:torecognizemistakesandlearnfromthem.Worryingly,humanitymaybegettingworseatadmittingitsmistakes.Fewenjoythefeelingofbeingcaughtoutinanerror.Butrealtroublestartswhenthedesiretoavoidapunishmentleadstoarefusaltodealwithcontraryevidence.Economistsoftenassumethatpeoplearesensible.Whenfacedwithanewfact,thesepeopleshouldupdatetheirviewoftheworldtotakebetterdecisionsinfuture.Yetyearsofeconomicresearchconfirmsthatpeoplefrequentlydisregardinformationthatconflictswiththeirviewoftheworld.Whyshouldthatbe?LastyearRolandBenabou,ofPrinceton,presentedaframeworkforthinkingabouttheproblem.Inmanyways,beliefsarelikeothereconomicgoods.Peoplespendtimeandresourcesbuildingthem,andgetvaluefromthem:somebeliefsmakeownersfeelgoodandshowtheirpublicidentity;otherbeliefsprovidevaluebyshapingbehavior—forexample,religiousasceticism(禁欲主义)canhelponeavoidunhealthyhabits.Becausebeliefs,however,arenotsimplytoolsformakinggooddecisions,butaretreasuredintheirownright,newinformationthatchallengesthemisunwelcome.Peopleoftenengagein“motivatedreasoning”tomanagesuchchallenges.MrBenabouclassifiesthisintothreecategories.“Strategicignorance”iswhenabelieveravoidsinformationofferingconflictingevidence.In“realitydenial”，troublingevidenceisrationalized(合理化)：realestateinvestorsmightmakeupfancifultheoriesforwhypricesshouldbehaveunusually,andsupportersofadisgracedpoliticianmightclaimthenegativenewstobefake.Andlastly,in“self­signalling”，thebelievercreateshisowntoolstointerpretthefactsinthewayhewants:anunhealthyperson,forexample,mightdecidethatgoingforadailyrunprovesheiswell.“Motivatedreasoning”isacognitivebias(偏见).Notalltheerrorsitleadstoarecostly:praisingtheperformanceofone'ssupportedfootballteamdespitecontradictoryevidencedoeslittleharm.Butwhenbiasesarebroadlyshared—withinfinancialworldorpoliticalparties—dangerarises.Motivatedreasoninghelpsexplainwhyviewpointspolarize(两极分化)evenasinformationismoreeasilyavailablethaneverbefore.WorkbyMrBenabousuggeststhatgroupthinkishighestwhenpeoplewithingroupsfaceasharedfate:whenchoosingtobreakfromagroupisunlikelytospareanindividualthecostsofthegroup'serrorsorbringmuchindividualbenefit.Theincentive(动力)toengageinmotivatedreasoningishighasaresult.Evenasthefactonaparticularissueisobvious,partiescanstillbecomeincreasinglypolarized.That,inturn,canmakeitharderstillforamemberofonepartytogetanybenefitfrombreakingfromagroup.Indeed,thegrouphasanincentivetosilenceindependentvoices.Publicstatementsofregretareriskyinarigidlypolarizedworld.Admissionsoferrorcannotonlyannoypartnersbutalsoprovideopportunitiesforopponents.Butitisrarelyintheinterestofthoseintherighttopretendthattheyareneverwrong.1、Accordingtothepassage,beliefsaresimilartoeconomicgoodsinthat________．A．bothareentertainingandvaluableB．bothcanbeshapedbyreligiousfaithC．bothcanreflectwhotheownersareD．bothpromotereligiousdevelopment2、Whichofthefollowingisanexampleof“self­signalling”？A．Afanspeakshighlyofhisteamalthoughithasjustlostthegame.B．Amancovershisearswhenstealingabell,believingthebellwon'tring.C．SupportersofTrumpbelievethenewsabouthisaffairswithaladyisfake.D．SuspectedAIDScarriersrefusetobetestedthoughitcanbedoneforfree.3、WhatcanbeinferredfromParagraphs6and7?A．Polarizationcausesindividualstobreakfromthegroup.B．Richersourcesofinformationdecreasemotivatedreasoning.C．Individualswithindependentvoicesaredismissedfromthegroup.D．Individualsinagroupengageinmotivatedreasoningfortheirowninterests.4、Whichofthefollowingopinionsmighttheauthoragreewith?A．Denyingerrorsisunavoidable.B．Failuretoadmiterrorsisharmful.C．Humansaregettingbetteraterringwell.D．Wisepeopleignorecontraryworldviews.第三部分语言知识运用（共两节）第一节（每小题1.5分，满分30分）阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项．26．（30分）Aboutamonthago,whileinthedrivethroughatStarbucks,Inoticedawomaninacarbehindmewhoappearedtobehavingabadday.Thereweretwokidsinthebackwhoseemedtohavetoomuchat8amonaSundaymorning,becausetheywereshoutingloudly.ThemovedslowlyandatonepointwhileIwaspullingthecarforward,thesadwomanbehindmemycar.Icouldtellthisher.TheentiretimethatIwaitedinlineformycoffeethiswomandidn’t.LookingbackatherIcouldtellshewaswondering“Whyme?Whytoday?”WhenIupandpaidformycoffeeIrequestedthatthebarista(咖啡吧员)ofStarbucksgivethewomanbehindmeasmilecardandpaidforhercoffee.Just30minuteslaterIwasagaininlineatStarbucks.Iheardaslamofacardoorbutthoughtnothingofit.Iwaswhenthesamewomancameuptomydriver’ssidewindow.Shemeatwenty-dollarbillandthesamesmilecardIhadgiventoher.Shesmiledandsaid,“Theseareforyou.Youaretheonewhogavethesetome,right?AllIneedyoutodoisaskthebaristatogivethebacktome.”Itwasamazing!ItwasasifthiswomanhadbeenwaitingtoshowherforwhatIhaddone!Whenshegotbackintohertodayshewasallsmiles.IcouldtellshehadthesamefeelingasIhadonthatearlySundaymorning.Itwasnicetohavemycoffeepaidfor,butwhatmademefeelevenbetterwasseeingthehappinessandsmileonherface.AsIpulledoutofthedrive-thru,shewavedandyelledout,“Haveaday!”Iyelledback“Youtoo!”andwavedhergoodbye.1、A．force B．strength C．power D．energy2、A．line B．time C．sun D．bus3、A．knocked B．touched C．kicked D．watched4、A．excited B．calmed C．worried D．entertained5、A．apologize B．smile C．complain D．bother6、A．pulled B．looked C．turned D．walked7、A．standing B．waiting C．parking D．pacing8、A．amused B．confused C．disappointed D．shocked9、A．handed B．owed C．presented D．asked10、A．clever B．kind C．honest D．modest11、A．privately B．secretly C．originally D．totally12、A．card B．change C．bill D．coffee13、A．consideration B．respect C．desire D．appreciation14、A．office B．home C．car D．room15、A．free B．quiet C．regular D．good第二节（每小题1.5分，满分15分）阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。27．（15分）FormorethansixmillionAmericanchildren,cominghomeafterschoolmeanscominghometoanemptyhouse.Allofthemhavesomething1．common.Theyspendpartofeachdayalone.Theyarecalledlatchkeychildren,wholookafter2．(them)whiletheirparentswork.LynetteSmithwasoncetheheadmasterofaschool.Shesaid,“Wehadaschoolruleagainst3．(wear)jewelry.Alotofkidshadchainsaroundtheirneckswithkeysfastened.Iwas4．(constant)tellingthemtoputtheminsidetheirshirts.Thereweresomanykeys.Itnevercametomymind5．theymeant.”Slowly,shelearnedtheywerehousekeys.Sheandherhusbandbegantalkingtothechildren.Fearisthe6．(big)problemfacedbychildrenathomealone.Oneineachthreelatchkeychildrenwerescared.Manyhadnightmaresandwereworriedabouttheirown7．(safe).Themostcommonwaylatchkeychildrendealwiththeirfearsisbyhiding.Itmightbeinashowerstill,underabed,8．inacloset.ThesecondisTV.They’lloftenplayitathighvolume.9．Smithslearnedit’shardtogetstatisticsonlatchkeychildren.Mostparentsareunwilling10．(admit)theyleavetheirchildrenalone.第四部分写作（共两节）第一节短文改错（满分10分）28．（10分）文中共有10处语言错误，每句中最多有两处，每处错误涉及一个单词的增加、删除或修改。增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。删除：把多余的词用斜线(\)划掉。修改：在错的词下划一横线，并在该词下面写出修改后的词。注意：1、每处错误及其修改均仅限一词；2、只允许修改10处，多者（从第11处起）不计分。Ropeskippingisasportsuitableforpeopleofallage、Peopleskipropeforfunandexercise、Everystudentareabletolearntoskip、Youcanskipaloneorwithyourclassmates、Ifyouskipalone,youwillneedshortropeaboutdoublethelengthofyourhigh、Youshouldturntheropeslowsothatyoucanskipsafely、Itmighthelpwithifyoucansingarhymewhileskips、Whenyouskiprope,yourheartbeatsfastthanusualandyourbodyisstressed、Therefore,stopforarestafteryouinjureyourself、So,pickuparope,findingasillyrhymeandstartskipping、第二节书面表达（满分25分）29．（25分）据报道，7岁的美国女孩AmyBruce得知自己身患肺癌（lungcancer）后处于极度的痛苦之中。美国抗癌协会（ACS）决定，每当Amy收到一封慰问信，就给她增加3美分的治疗款。假如你是新华中学的学生李华，请你用英文给Amy写一封慰问信，主要内容包括：1.自我介绍2.得知的情况3.表示鼓励4.打算为她做什么5.祝她早日康复提示：1.信的格式已为你写好2.信中不得出现你的真实情况。3.词数100左右。DearAmyIamLiHua,aseniorgrade-threestudentfromChina.____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________YoursLiHua

参考答案第一部分（共20小题，每小题1.5分，满分30分）1、B2、B3、B4、B5、D6、B7、D8、B9、B10、D11、B12、D13、D14、C15、A16、D17、C18、C19、D20、A第二部分阅读理解（满分40分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。21、1、D2、C3、B4、B22、1、B2、D3、C23、Webrushourteethdaily,butdoyouknoweverythingyouneedtoknowaboutdentalcareandhygiene?Believeitornot,thereisalotmorethanmostpeoplerealize.Luckily,hereareseveralappsthatcanhelpyou.●BrushDJYoushouldbrushyourteethforfulltwominutesasrecommendedbydentists,butthattimecanbedifficulttojudge.Manyrecommendyoulistentomusic,becausemanysongsarejustaroundtwominutesinlength.BrushDJhasloadsofgreattunesthatwillgetyouintothetwo­minutehabit.Therearebothsongstolistento,andvideostowatch,andyou'llfindavarietyofawesometunes.●OrasphereIt'srecommendedthatOraspherevideosbeusedbydentistsfortheirpatients,sotheycanlearnaboutprocedures.Thosewhodousethesevideossaythatthesoftwarecangreatlydecreasetheamountoftimeittakestoexplainprocedurestopatients.●AmericanDentalAssociation(ADA)Everythingyoueverwantedtoknowaboutyourteeth,andthensom