2022年广东省中山一中等七校联合体重点中学高三下学期第一次联考英语试卷含答案

2021-2022高考英语模拟试卷请考生注意：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．Itwaswarmandnicethatevening.Istayedawakeuntileleveninordertohaveagoodlookatthemoonbymyself.A．onaverageB．onpurposeC．onbusinessD．ontime2．—Iwasinformedthatyouwonthelottery?—Areyoukidding?MaybeIwillwinalotterywhen______.A．youcryforthemoon B．pigsflyC．allgoodthingscometoanend D．yougetanewleaseonlife3．Difficultiesstrengthenthemind,_____labourdoesthebody.A．if B．asC．for D．so4．Itwasnotuntilshegothome____Jenniferrealizedshehadlostherkeys.A．when B．thatC．where D．before5．Greatpity!Hisillnessis________thetreatmentavailablesofar.A．within B．above C．about D．beyond6．Thewholenationisstrugglingtoworkoutaninexpensive______effectivesolutiontosmog.A．yet B．still C．or D．though7．Theyovercamesomedifficultiesandcompletedtheworkaheadoftime,________wassomethingwehadnotexpected.A．that B．whichC．it D．what8．Ifyouthinkthattheillnessmightbeserious,youshouldnot_________goingtothedoctor.A．putoff B．setaboutC．holdback D．giveaway9．Themeetingplanned

nextMondayisveryimportant.A．tobeheldB．heldC．beingheldD．holding10．Ifyouhaveanyquestion,please______freetocontactmeatsue_smith@126.com.A．tofeelB．feelingC．feelD．felt11．Youlookfrozen．SitdownbythefireandIyousomehottea．A．make B．wasmaking C．made D．willmake12．Manywritersaredrawntobuildingaworld,_____readersaresomewhatfamiliarwithbutalsofeeldistantfromournormallives.A．it B．one C．that D．theone13．Haveyoueverbeeninasituation______youknowtheotherpersonisrightyetyoucannotagreewithhim?A．where B．which C．that D．as14．We’llgoearly．，wemaynotgetaseat．A．Otherwise B．Meanwhile C．However D．Besides15．publicbicycleswithamobileappismoreconvenientforusers.A．TounlockB．UnlockC．UnlockedD．Unlocking16．—Hemadeanapologybeblamedwhathehaddone.—It'sreallywiseofhim.A．soastonot;ofB．inordertonot;forC．soasnotto;forD．inordernotto;of17．—Allthecontainershavebeenunloaded!CanithavebeendonebyFrank?—Impossible!He________hiscarlastnight.A．hasfixedB．hadfixedC．wouldfixD．wasfixing18．Theboythefirstprize,buthewassocarelessastomakeafoolishmistake.A．musthavegained B．needhavegainedC．couldhavegained D．shallhavegained19．－Mike,ourteamwillplayagainsttheRocketsthisweekend.Iamsurewewillwin.－________!A．Congratulations B．CheersC．Bestwishes D．Goodluck20．Whatimpressedmemostaboutthemoviewerethe________filmedinNewYork.A．scenery B．scenesC．sights D．views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）Althoughtheideaof“zeroemission,netcarbon-positive,sustainable(可持续)”developmentwaspromotedworldwide,mostcitiesareatalosswhattodoorevensomehaveobjectedtoit.ButinLiuzhou,acityinsouthernChina,attitudescouldnotbemoredifferent.TheLiuzhouMunicipalityUrbanPlanningBureauhassignedupItalianarchitectStefanoBoeri,thefatheroftheforestcitymovement,tobuildaself-containedcommunityforupto30,000people.Heisthego-tomanforsuchprojectsthankstothesuccessofhis“verticalforests”,tworesidential(住宅的)towers.Completedin2014,theyremoveupto17.5tonsofsoot(煤烟)fromtheaireachyear,andayearlateroneofthemwasnamedBestTallBuildingWorldwide.TheLiuzhouprojectisamuchmoreambitiousundertaking,however.Itshomes,hospitals,hotels,schoolsandofficeswillbebuiltona340-acresiteinwhatBoericallsthefirstattempttocreatean“urbanenvironmentthatisreallytryingtofindabalancewithnature”.Its100speciesofplantlifeareexpectedtoabsorbalmost10,000tonsofcarbondioxideand57tonsofpollutantsperyear,whileatthesametimeproducing900tonsoflife-givingoxygen.Althoughthearchitectshaven’tpublishedthecostoftheforestcity,theMilantowerscostonlyfivepercentmorethantraditionalskyscrapers.TheconstructionofhisforestcityatLiuzhouissettobeginin2020,andthereisstillagreatdealofplanningandresearchrequiredbeforeaprojectedcompletiondatecanbeset.However,Boeriremainsoptimisticabouttheprojectandhasconfidenceinthesoundnessofhisvision:“Ireallythinkthatbringingforestsintothecityisawaytodealwithglobalwarming.”1、What’sLiuzhou’sattitudetowardsthesustainabledevelopment?A．Approving. B．Cautious. C．Unfavorable. D．Doubtful.2、WhyisStefanoemployedfortheLiuZhouproject?A．Hevolunteeredtodotheproject.B．Heisafamousarchitectintheworld.C．Heisthefatheroftheforestrecovery.D．Hehasgainedexperienceinsimilarprojects.3、Whatdoestheunderlinedword“they”referto?A．Thearchitects. B．Thetwotowers.C．Forestsinthecity. D．Theresidentsofthecity.4、What’sthepurposeofLiuZhouproject?A．Toprovidemorejobs. B．Tobringforestintocity.C．Tosolvehouseshortage. D．Toimprovetheenvironment.22．（8分）ThereisanEnglishsaying:“Laughteristhebestmedicine.”Untilrecently,fewpeopletookthesayingveryseriously.Nowhowever,doctorshavebeguntostudylaughterandtheeffectsithasonthehumanbody.Theyhavefoundfactsthatlaughterreallycanimprovepeople’shealth.[Testswerecarriedouttostudytheeffectsoflaughteronthebody.Peoplewatchedfunnyfilmswhiledoctorscheckedtheirheartrate,bloodpressure,breathingandmuscles.Itwasfoundthatlaughterhassimilareffectstophysicalexercise.Itincreasesbloodpressure,theheartrateandtherateofbreathing;italsoworksseveralgroupsofmusclesintheface,thestomach,andeventhefeet.Iflaughterexercisesthebody,itmustbebeneficial.Othertestshaveshownthatlaughterappearstobeabletoreducingtheeffectofpainonthebody.Inoneexperimentdoctorsproducepainonthebody.Inoneexperimentdoctorsproducepainingroupsofstudentswholistenedtodifferentradioprograms.Thegroupwhichtolerated(忍受)thepainforthelongesttimewasthegroupswhichlistenedtoafunnyprogram.Thereasonwhylaughtercanreducepainseemstobethatithelpstoproduceendorphinsinthebrain.Thesearenaturalchemicalswhichdiminishbothstressandpain.Thereisalsosomefacttosuggestthatlaughterhelpsthebody’simmunesystem,thatis,thesystemwhichfightsinfection.Inanexperiment,onegroupofstudentswatchedafunnyvideowhileanothergroupofstudentsservedasthecontrolgroupinotherwords,agroupwithwhichtocomparethefirstgroup.Doctorscheckedthebloodofthestudentsinbothgroupsandfoundthatthepeopleinthegroupthatwatchthevideohadanincreaseintheactivityoftheirwhitebloodcells,thatis,thecellswhichfightinfection.Asaresultofthesediscoveries,somedoctorsandpsychiatristsintheUnitedStatesnowholdlaughterclinics,inwhichtheytrytoimprovetheirpatients’conditionbyencouragingthemtolaugh.Theyhavefoundthateveniftheirpatientsdonotreallyfeellikelaughing,makingthemsmileisenoughtoproducebeneficialeffectssimilartothosecausedbylaughter.1、Itcanbelearntfromthepassagethatlaughtercan_______.A．makepeoplefeelyoungerB．changepeople’shabitsC．improvepeopleshealthD．makepeoplelovetheirlives2、Smilingcanproduce____.A．moreeffectsthanlaughterB．thesameeffectsaslaughterC．lesseffectsonthehumanbodyD．noeffectsonthehumanbody3、Themainideaofthispassageisthat______.A．thereareseveralwaysofstudyingthebenefitsoflaughterB．laughterandphysicalexercisehavethesameeffectsonhumanbodyC．thedoctorsshouldlearnhowtomakepeoplelaughD．testsshowthatlaughtercanproducebeneficialeffectsonhumanbody23．（8分）Lately,my90-year-oldmomhasbeenmoreandmorequietandsleepy.Thisisveryoddanddisturbing.Atthesametime,my92-year-oldfatherhasbeensufferinghisownhealthproblems.Itisterribletoseemyfatherstruggletogethertotalk,saysomething,whenshedoesn’thavetheenergy.Theotherday,IrecalledhowmymotherusedtovisitawomannamedMrs.Demopolis,aGreekimmigrant,whomadethebestbaklava（果仁饼）!Shegavelessonsonbakinghemtomymother.Also,mymomusedtobakebaklavaoftenforatimeandthatwasabsolutepleasure.AsIspokeofthisoverthephone,mysilentmomcheeredupandsaidhowmuchshe’dlikeohaveoneagain.Now,theyliveinFloridaandIlikeinWales,UKwithmyhusbandandchildren,soIcan’tgoandbringhersomebaklavaorevenmakesomeinherkitchen.ButwhatIdidsuggestwasthatmyfatherorsistershouldbuysomebaklavaataGreekRestaurantandIshoulddoshesame,andwouldn’titbefuntoeatourbaklavaatexactlythesametimeandso,betogethersharingthemomentandthepleasure?Bothparentslovedtheideaandwedecidedtodoit.Itwaslovelytohearalittlehappinessinhervoice.Towdayslaterwebothhadourbaklavaandsharedtheexperience.Itmeantalottomyparents,andtome,todothis.Mymothersaidshewantstodothisagain,maybewithanotherfoodorevenbaklavaagain!Whynot?Andassheonlykeepslosingweightinsteadofgaining,itisgoodforhertofindfoodsthatappealtoherappetite.Itisbecominghardertofindwaystocommunicateoverthephone,butthiswasthiswasatleastaverygoodwaytodoso.Anditwasnice,aswell,toremindusofpleasantmemoriesofourpast.1、Whathasmainlyworriedtheauthorlately?A．Herfatherissufferingfromillness.B．Hermotherisbecominglessactive.C．Hermotherrefusestotalkwithherfather.D．Shehasdifficultyhelpinghersickparents.2、Whatdidtheauthorsuggesttopleasehermother?A．MrsDemopolisshouldbuysomebaklavaforhermother.B．Hermothershouldmakesomebaklavainherkitchen.C．Herfamilyshouldgettogethertocomforthermother.D．Herfamilyshouldeatthesamefoodatthesametimeseparately.3、Whatdoweknowabouttheauthor’smother?A．Sheisgettingthinner.B．Sheisstillunconscious.C．Shewillonlyeatbaklava.D．Shehasfoundherfavouritefoods.4、Whatcanbeinferredfromthetext?A．Theauthor’sfatherhaslostabilitytotalktohiswife.B．Theauthor’smotherlearnedtomakebaklavafromaGreekimmigrant.C．Theauthor’smotherhadlittleexcitementwhenhearingthesuggestion.D．Theauthor’sauthorandherparentsliveseparatelyindifferentcountiesintheUK.24．（8分）Ifyouwanttoslowaging,youmightwanttoeatless.Thisfindingisgoodnewsifyouwereamouse.Theresearchersstudiedmice,notpeople.JohnPriceandotherresearchersstudiedtwogroupsofmice.Onegroupwasabletoeatasmuchasitwanted.Theresearcherslimitedwhatthemiceintheothergroupate.Theirdiethad35percentfewercaloriesthanthefirstgroupofmice.Pricesaysthemicewiththedietrestrictionswere＂moreenergeticandsufferedfewerdisease.＂Theywerenotjustlivinglongerbutseemedtostayyoungerforalongerperiodoftime.Theresearchersfoundthatfewercaloriesslowdownanaturalmechanismincellscalledribosomes.Priceexplainsthatribosomesareresponsibleformakingimportantproteinsinthecells.Butwithfewercalories,theyslowdown.Thisgivesthecellsmoretimetorepairthemselves.Theresearcherssayribosomesusefrom10to20percentofthecell’senergytomakethoseproteins.Pricewrotethat＂becauseofthis,itisimpracticaltodestroyanentireribosome＂whenitstartstobreakdown.However,＂repairingindividualpartsoftheribosomeonaregularbasisenablesribosomestocontinueproducinghighqualityproteinsforlongerthantheywouldotherwise.Thistopqualityproduction,inturn,keepscellsandtheentirebodyfunctioningwell.＂Pricesaid,＂ribosomeisaverycomplexmachine,likeacar.＂Theyneed＂maintenancetoreplacethepartsthatwearoutthefastest.Whentireswearout,＂heexplained,＂youdon’tthrowthewholecarawayandbuyanewone.Itcostslesstoreplacetheoldtires.＂＂Food,＂hesaid,＂isn’tjustmaterialtobeburnedit’sasignalthattellsourbodyandcellshowtorespond.＂Pricesaidthefindingshelptoexplainhowexactlyourbodiesage.Andthismay＂helpusmakemoreeducateddecisionsaboutwhatweeat.＂1、Whatcanweknowaboutthemicewithlimitedcaloriesfromthestudy?A．TheycankeephealthyeasilyB．TheyneedmoreenergytobeactiveC．TheycanlookyoungerthantheyareD．Theywilllivealongerlifelikehumans2、Whatwillhappentoribosomesiftherearefewercalories?A．TheywillcompletelybreakdownB．TheymakeproteinsinthecellsslowlyC．TheywillproducehighqualityproteinsmoreD．Theymayneedmoretimetorepairthemselves3、Priceexplainedtheribosomes’roleofrepairingthemselvesby_________.A．tellingastoryB．listingbasicdataC．makingcomparisonsD．experimentingonmice4、Whatdoesthetextmainlydealwith?A．FooddecideshowlongyouliveB．Canyouslowdownyouragingprocess?C．EatinglessmayhelpyoulivelongerD．Shouldyourdietbereducedforyourhealth?25．（10分）Asoneofourtalentedremoteeditors,you'llhavetheabilitytoworkfromhomewhilechoosingthetypesoftasksthatinterestyou.Youwillreceivefreetrainingthroughonlinetalksandourcompanynewsletters.Youwillhavejobsecurityandbepaidontime.WorkingwithScribendiINc.requiresamiddllelevelofcomputerandInternetknowledge.Youneedtobegoodatdownloadinganduploadingfiles,attachingfilestoemails,savingandfindingfilesonyourcomputer,transferringfilesandrenamingfiles.Youshouldhaveagoodworkingknowledgeofthemajordocumentfileformatsandtheirassociatedsoftwareprograms.Standardqualifications:Editor:•Auniversitydegreeinarelatedfield•Atleastthreeyearsofexperienceinediting,writing,documentproductionorlanguageAching•AnativespeakeroftheEnglishlanguage•Excellentreadingcomprehensionskillsandtheabilitytofollowwritteninstructionsandworkindependently•Anaverageeditingorproofreading(校对）speedof1,000-1,500wordsperhour•MicrosoftWord2010orlateronasecurePC(notMac)computer•Broadband/high-speedInternetaccess•TheabilitytoacceptpaymentsinyourownaccountinUSdollarsusingPayPal;pleasereviewPayPal'sinternationalpaymentnetworkformoredetails.Preferredqualifications：•Apost-graduatedegreeinarelatedfield•Accesstoadditionalwordprocessing/documentproductionsoftware(e.g,Star/OpenOffice.WordPerfect,OpenOffice,LaTeX,Acrobat,FinalPublisher.PageMaker)•ln-depthknowledgeofoneormorestyleguides(e.g,ChicagoManualofStyle,Turabian,APA)PleasenotethatapplicationsforthispositionareNOTacceptedbyemail.Pleasedonotcalloremailformoreinformationaboutapositionortodiscussanapplication.Pleasenotethatonlyapplicantsselectedforevaluationwillbecontacted.Pleasevisithttp：///applyforapplication.Becarefulaboutmeetingdeadlines.1、Theremoteeditor.A．willstudytheknowledgeoftypesettingB．willreceivetrainingthatneedstobypaidforC．willaccepthispaymentsbyusingPayPalD．canrestonweekendsandhavegoodpay2、Whowillprobablybeoneoftheremoteeditors?A．AllAmericanwithauniversitydegree,whoworked3yearsforanewspaper.B．AChinese,withauniversity,whoworked5yearsforatranslation―comply.C．AnEnglishwishahighschooldegree,whoworked3yearsforanewspaper.D．AFrenchmanwithauniversitydegree,whohasahighlevelofcomputerknowledge,3、WhichofthefollowingisTRUE?A．Thoseapplyingforthejobwillbegivenajobinterview.B．OnecanapplyforthejobthroughouttheyearC．Communicationisveryimportantforonetogetthejob.D．Onecanapplyforthejobthroughthewebsite,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）Weareallreasonablebeingsanditisveryhumantodounreasonablethingsattimes.ThefollowingstorytellsyouwhatI1.Atlunchtime,Jimmy,Patrick,Devon,andIbeganourregular2ofourlunches.Iglancedacrossthebusycafeteriaandsawthe3student,Joel.Hewasholdinghisplateandwaitinginlines.Patricknoticedhimtoo.“Why’sthenewkid4liketheheadmaster?”heasked.DevonandJimmylaughed.“Joel’scool,andhisclothesarealwaysneatandclean.He’sinmyEnglishandhistoryclasses,”Isaid.However,Ikeptthe5thatJoelandIhadbecomefriendswhenweworkedonaprojecttogether.WediscoveredthatwewerebothenthusiasticreaderssomethingIwouldneveradmittoPatrick,Jimmy,andDevon.IwasthatJoelwaswalkingtowardus.“Don’tdoit,”Ithought,but6secondshewasatourtable.Myfriendsraisedtheireyebrows.Jimmy,DevonandPatrick7theirbackpacksonthetableandchairssothattherewasno8leftforanotherpersontositdown.Patricksaid,“Idon’tthinkwehaveroom.”Thisawkwardsituation9theair.Icould10Joellookingatme,butIstaredatmylunch11itcontainedpreciouspearlsofwisdominsteadofriceandbeans.Afteralong,12pause,Joelleft.I13havespokenupforhim,butIcouldn’twalkawayfrommythreefriends,couldI?Joeldidn’tspeaktomeafterthat14.Hewassoonhangingaroundwithanothergroupofkids.Afewmonthslater,IsawanannouncementaboutJoelbeingchosentobepresidentoftheclassbookclub.Iwas15forJoel’sachievements,butIrealizedIhadmadeabigmistakewhenIsaid16atthelunchtablethatday.whywasIsoafraidthatmyfriendsmight17thatIliketoread?AsIstaredattheannouncement,IknewIneededto18toJoel—evenifhedidnotwanttobecomemyfriendagain.Iwascertainthatmythreefriendswouldnotagree.IwasalsocertainthatI19losingthemaswell.20,IknewthatIwouldlosemyselfifIdidnothing.Asthedismissalbellrang,Igatheredupmybooks,tookadeepbreath,andwenttofindJoel.1、A．regretB．valueC．loseD．admire2、A．routineB．processC．stepD．course3、A．luckyB．goodC．newD．top4、A．behavedB．treatedC．laughedD．dressed5、A．wordsB．ideasC．promiseD．truth6、A．onB．inC．atD．by7、A．layB．threwC．foldedD．piled8、A．spaceB．foodC．timeD．book9、A．roundedB．coveredC．filledD．froze10、A．tasteB．smellC．hearD．feel11、A．evenifB．asifC．incaseD．nowthat12、A．toughB．painfulC．uncomfortableD．frightening13、A．needB．shouldC．wouldD．must14、A．greetingB．changeC．meetingD．lesson15、A．happyB．sorryC．thankfulD．anxious16、A．anythingB．somethingC．everythingD．nothing17、A．holdoutB．findoutC．turnoutD．giveout18、A．adaptB．apologizeC．smileD．refer19、A．riskedB．permittedC．triedD．suggested20、A．ThereforeB．MeanwhileC．HoweverD．Besides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）Youmaylikeatleastsomekindofmusic.Buttheproblemisthat,inlotsofplaces,you’remade1．(hear)somebodyelse’schoiceofmusic.Sayyou’vejustlandedatanairport,wherethebackground(背景)musicmaybeplayedloudly.Whenyouare2．thewaytoyouhotel,theremaybeanotherkindofmusic3．(switch)onbythetaxidriver.Thenyougoouttodinnerandendupinarestaurant,4．ownerthinksmusicwillhelpmakeyoueatmoreandspendmore.Thenaperson5．(play)theviolincomesaround.Thisiscalledthe“musicwallpaper”anditspurposeistomakeyouconsumemore.Inaword,youfind6．hardtofindaquietpublicplacewithoutmusic.Noisepollutionmaybe7．(harm)toourhearing.It’salsobadforsomeofourdaily8．(activity).Thefact9．youcan’tsee,tasteorsmellnoisemayhelpexplainwhyithasnotreceivedasmuchattentionasotherkindsofpollution,suchasairpollutionorwaterpollution.Manyofusfailtorealizewe10．(surround)bytoomuchnoise.Asaresult,harmisdonetoourhealthwithoutusbeingawareofit.第四部分写作（共两节）第一节短文改错（满分10分）28．（10分）假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅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。Iamthesharedbike、I’dliketobeonthestreettoserveforpeople、Theycanridemejustviaamobileapp、Buthorriblethingshappenafewdaysago、Severalpeoplestolesomeofuswithpayingtheirbillsontheappbuttreatedusbadly、Theybrokemysaddleandeventhrewmyfriendseverywhere、Wefeltangryforwhichthosebadguyshaddone、Thankstosomekindlypeople,wereceivedcareful“treatment”、Now,youhelpaswellasthewholesociety’sattentioniswhatweneedmost、Wearedesignedtohelppeoplewhoarestucktheheavytraffic、Weareneithertoynorprivatevehicles、Pleaseobeythebasicrules、35第二节书面表达（满分25分）29．（25分）假如你是某中学学生会主席李津。请结合最近网上广为流传的“珠峰大本营将无限期关闭”的消息以及官方最新“珠穆朗玛峰自然保护区将继续有条件开放，依法合规的登山活动仍可进行”的回应，以学生会身份，用英文在学校英文周刊上写一封倡议书，号召大家做文明登山者，关爱珠峰脆弱的自然环境。内容须包括：☆不乱扔垃圾，注意垃圾分类。☆保护动植物，拒绝买卖野生动物制品。☆未获登山许可，不要擅自前往。注意：⑴请使用规范英语，词数不少于100词，开头和结尾已给出，不计入总词数；⑵可适当增加细节，以使内容充实、行文连贯。参考词汇：珠穆朗玛峰自然保护区MountQomolangmaNatureReserveDearSchoolmates,LocalauthoritieshaverecentlydeniedtheclaimthatMountQomolangmaNatureReservewaspermanentlyclosed.Meanwhilethegovernmenthascalledoneveryone’sattentiontothepresentsituation._________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Thankyou！TheStudents’Union

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、A7、B8、A9、A10、C11、D12、B13、A14、A15、D16、C17、D18、C19、D20、B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、A2、D3、B4、D22、Guidedogsenjoytheirworkverymuch,andtheygetalotofsatisfactionfromajobwelldone,butthereisnoroomfortypicaldogfunduringtheworkday.Games,treatsandpraisedistractthedogfromhelpingitshandlernavigate(指引方向)thecourse.Evenwhenthehandlerdoesn’tneedassistance,aguidedogonthejobistrainedtoignoredistractionsandkeepstill.Thisisbecauseaguidedogmustbeabletocometohandler’sworkplaceorbeinpublicplaceswithoutcreatingadisturbance(干扰).Whenyouseeaguidedogonthejob,itisextremelyimportantthatyourecognizethatitisatwork.Pettingortalkingtothedogspreadsitsconcentration,whichweakensthehandler’sabilitytogetaroundinhisorhersurroundings.Peopleareveryimpressedwithguidedogsandsowehaveanaturalinclination（倾向）topraisethem,butthebestthingyoucandotohelpaguidedogistoleaveitalonesothatitcanpayattentiontoitssurroundingsandmaintainitsfocusonitshandler.Guidingisverycomplicated,anditrequiresadog’sundividedattention.Whenaguidedoggetshomeattheendoftheday,however,itwillplayandsoakuppraisejustlikeanordinarypet.Guidedogsmakethedifferencebetweenworkandplaybasedontheirleadharness（牵狗用的皮带）：Whentheharnessison,theymuststaycompletelyfocusedwhenitcomesoff,it’splaytime.Guidedogsworkveryhardeveryday,buttheyleade