2022年湖南省怀化市高三下学期第一次联考英语试卷含答案

2021-2022高考英语模拟试卷注意事项：1．答卷前，考生务必将自己的姓名、准考证号填写在答题卡上。2．回答选择题时，选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑，如需改动，用橡皮擦干净后，再选涂其它答案标号。回答非选择题时，将答案写在答题卡上，写在本试卷上无效。3．考试结束后，将本试卷和答题卡一并交回。第一部分（共20小题，每小题1.5分，满分30分）1．—TherearenorelativearticlesontheInternet.Whatshallwedo?—MyGod！Therearealwaysnotanyusefularticleswhenyouwant.A．one B．it C．that D．any2．Toworkfromhome,whichonecouldhardlyimagine,hasbeenmadewiththedevelopmentofcomputertechnology.A．possible B．itpossible C．possibly D．tobepossible3．--Wheneveryouwantagoodmeal,cometomyrestaurantandeatforfree.--Believeme.Thatisan________Iwillnotrefuse.A．approach B．offerC．idea D．instruction4．ThankstoChinesepeople’shardworkandwisdom,Chinahas_____intothesecondlargesteconomy.A．evolved B．slipped C．extended D．shaped5．—Marylookshotanddry.—So________youifyouhadahighfever.A．could B．would C．may D．must6．Malenursesaredifficulttohireasmanymenrejectthis______outofthelong-existingdiscrimination．A．oncept B．responsibilityC．identity D．personality7．—Mr,White,doyouhaveanything________?—No,nothing.Youcantakearestnow.A．typeB．typedC．totypeD．tobetyped8．Wewerescaredtodeathwhenthefire______.Fortunately,itwasputoutbeforeitcausedmuchdamage.A．brokeout​​ B．cameoutC．gaveout​​ D．turnedout9．Bythetimewe________fromourschool,wehavebeenclosefriendsformorethantenyears.A．graduated B．willgraduateC．aregraduating D．graduate10．Thegovernmenthastakensomemeasurestosolvetheshortageofelectricity,butitwillbesometime_________thesituationimproves.A．since B．whenC．unless D．before11．Who______thefightagainsttheH1N1flu______itnotbeenfortheChinesescientists’greatefforts?A．couldhavewon;had B．wouldwin;had C．wouldhavewon;has D．couldwin;has12．Idecidedtodoarandomactofkindnesslastyear.And______thatthepersonIwouldenduphelpingmostwouldbemyself.A．Ilittleknew B．littledidIknew C．littledidIknow D．littleIknew13．—What’swrongwithyou?—Oh,Iamsick.I________somuchicecreamjustnow.A．shouldn’teat B．mustn’teatC．couldn’thaveeaten D．shouldn’thaveeaten14．Hawkingbelievestheearthisunlikelytobetheonlyplanet_____lifehasdevelopedgradually.A．that B．whyC．where D．whose15．Wehavedecidedtofulfillthetaskintime,difficultieswemaymeetwith.A．nomatterhow B．however C．whatever D．whichever16．Theseniorteacheralwaysgoesswimminganddoespush-upstostay________.A．inplace B．inorderC．inshape D．infashion17．Thepoliceofficersdecidedtoconductathoroughand______reviewofthecase.A．comprehensive B．complicatedC．conscious D．constant18．_______theschool,thevillagehasaclinic,whichwasalsobuiltwithgovernmentsupport.A．Inreplyto B．InadditiontoC．Inchargeof D．Inplaceof19．—Areyoufreenow?Ihavesomethingimportanttotellyou.—OK,________youmakeitshort.Iwillhavetofinishthisreportbeforenoon.A．nowthatB．assoonasC．everytimeD．aslongas20．Dayslater,mybrothercalledtosayhewasallright,but_______saywherehewas.A．mustn’t B．shouldn’t C．wouldn’t D．mightn’t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）Everest121minAdventure/Biography/DramaStoryline:AgroupofclimbersstarttheirfinalclimbtothesummitofMountEverest，thehighestpointonEarth.Withlittlewarning，aviolentstormstrikesthemountain，swallowingtheadventurers...Director:BaltasarKormakurStars:JasonClarke,AngPhulaSherpa,ThomasM.WrightAddtowatchlistWarRoom120minDramaStoryline:TonyandElizabethJordan,seeminglyhaveitall--greatjobs,abeautifuldaughter,theirdreamhome.Inreality,theirmarriagehasbeenawarzone.WithguidancefromMissClara,anolder,wiserwoman,Elizabethdiscoversshecanstartfightingforherfamilyinsteadofagainstthem.Director:AlexKendrickStars:PriscillaC．Shirer,T.C．Stalligs,KarenAbercrombieAddtowatchlistStraightOuttaCompton147minBiography/Drama/MusicStoryline:In1987,fiveyoungmen,usinghonestrhymes,puttheirfrustrationandangeraboutlifeintothemostpowerfulweapontheyhad:theirmusic.StraightOuttaComptontellsthetruestoryofhowtheseculturalrebels（叛逆者）stooduptotheauthoritiesthatmeanttokeepthemdownandformedtheworld’smostdangerousgroupN.W.A．Director:F.GaryGrayStars:O’SheaJacksonJr.,CoreyHawkins,JasonMitchellAddtowatchlistAWalkInTheWoods104minAdventure/Biography/ComedyStoryline:AfterspendingtwodecadesinEngland,BillBrysonreturnstotheUS,wherehedecidesthebestwaytoconnectwithhishomelandistohiketheAppalachianTrail.HetravelswithKatz,oneofhisoldestfriends.Thetroubleisthatthetwohaveacompletelydifferentdefinitionoftheword,“adventure”.Therealfunbegins...Director:KenKwapisStars:RobortRedford,NickNolte,EmmaThompsonAddtowatchlist1、Ifyoupreferfamily-themedmovies,whichoneshouldsee?A．EverestB．WarRoomC．StraightOuttaComptonD．AWalkInTheWoods2、WhatisN.W.Aaccordingtothepassage?A．AmovieclubB．AmusicgroupC．AnadventureteamD．Acharityorganization3、WhydoesBillBrysonhiketheAppalachainTrail?A．ToaccompanyhisfriendKatzB．ToexerciseandkeephimselffitC．TostrengthenhisbondwiththeUSD．Tohaveanadventureinthewoods22．（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,onegroupofstudentswatchedafunnyvideowhileanothergroupofstudentsservedasthecontrolgroup----inotherwords,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）Electriccarsaredirty.Infact,notonlyaretheydirty,theymightevenbemoredirtythantheirgasoline-poweredcousins.PeopleinCalifornialovetotalkabout“zero-emissions(排放)vehicles”,butpeopleinCaliforniaseemtobecluelessaboutwhereelectricitycomesfrom.Powerplantsmostlyusefiretomakeit.Asidefromthenewfolkswhohavetheirroofscoveredwithsolarcells,wegetourelectricityfromgenerators(发电机).Generatorsarefueledbysomething--usuallycoal,oil,butalsobyheatgeneratedinnuclearpowerplants.Thereareafewwindfarmsandgeothermalplantsaswell,butbyfarwegetelectricitymainlybyburningsomething.Inotherwords,those"zero-emissions"carsarelikelycoal-burningcars.It’sjustbecausethecoalisburnedsomewhereelse,itlooksclean.Itisnot.It'sasiftheCaliforniaGreensarecoveringtheireyes—“IfIcan'tseeit,it'snothappening.”Gasolineisanincrediblyefficientwaytopoweravehicle;agallonofgashasalotofenergyinit.Butwhenyoutakethatgas(oranotherfuel)andfirstuseittomakeelectricity,youwasteanicepartofthatenergy,mostlyintheformofwastedheat—atthegenerator,throughthetransmissionlines,etc.Agallonofgasmaypropelyourcar25miles.Buttheelectricityyougetfromthatgallonofgaswon'tgetyounearlyasfar—soelectriccarsburnmorefuelthangasoline-poweredones.Ifourelectricitycamemostlyfromnukesorgeothermal,orhydroorwindorsolar,thenanelectriccartrulywouldbeclean.Butforpolitical,technical,andeconomicreasons,wedon'tusemuchofthoseenergysources.Inaddition,electriccars'batterieswhicharepoisonousforalongtimewilleventuallyendupinalandfill.Andfinally,whencarsarethepolluters,thepollutionisspreadacrossalltheroads.Whenit'sapowerplant,though,allthejunkisinoneplace.Natureisverygoodatcleaningupwhenthingsaretooconcentrated,butittakesalotlongerwhenallthegarbageisinonespot.1、Whatdoes“clueless”meaninparagraph2?A．PeopleseetheCaliforniaGreenseverywhere.B．Peopletherehavenoideathatsofarelectricitymainlycomesfromburningcoal,oil,etc.C．PeopleinCalifornialovetohavetheirroofscoveredwithsolarcells.D．PeopleinCalifornialovetotalkaboutzero-emissionsvehicles.2、Whatisthemainideaofthetext?A．Electriccarsarenotcleanatall.B．Electriccarsarebetterthangasoline-poweredones.C．Peoplecastdoubtsonelectriccars’batteries.D．Gasolineisanefficientwaytopoweravehicle.3、Theelectricitywegetfromagallonofgasmaymakeourcarrun________.A．notlessthan25milesB．asfaras50milesC．asfaras25milesD．notmorethan25miles4、Accordingtothetext,electriccars________.A．aremoreenvironmentallyfriendlyB．burnmorefuelthangas-poweredonesC．areverygoodatcleaningupwhenthingsarenottooconcentratedD．arepoisonousforalongtimeandwilleventuallyendupinalandfill5、Itcanbeinferredfromthetextthat________.A．beinggreenisgoodandshouldbeencouragedincommunicationB．electriccarsarenowthedominantvehiclecomparedwithgasoline-poweredcousinsC．zero-emissionsvehiclesshouldbechosentoprotectourenvironmentD．electriccarsarenotcleanbecausewegetelectricitymainlybyburningsomething24．（8分）OnSunday,March11,mostAmericanswillsettheirclocksforwardanhour,asdaylightsavingtime(sometimeswronglycalleddaylightsavingstime)beginsandmostoftheUnitedStatescanenjoyanextrahourofdaylight.ThespringandfallclockchangescontinuealongtraditionstartedbyBenjaminFranklintoconserveenergy.BenjaminFranklinlakesthehonor(ortheblame,dependingonyourviewofthelimechanges)forcomingupwiththeideatoresetclocksinthesummermonthsasawaytoconserveenergy.Bymovingclocksforward,peoplecouldtakeadvantageoftheextraeveningdaylightratherthanwastingenergyonlighting.Atthetime,FranklinwasambassadortoParisandsowrotealettertotheJournalofParisin1784,rejoicingoverhis“discovery”thatthesunprovideslightassoonasitrises.Evenso,DST(DaylightSavingTime)didn’tofficiallybeginuntilmorethanacenturylater.GermanyestablishedDSTinMay1916asawaytoconservefuelduringWorldWarI.TherestofEuropecameonboardshortlythereafter.Andin1918,theUnitedStatesadoptedDST.ThoughPresidentWoodrowWilsonwantedtokeepdaylightsavingtimeafterWWIended,thecountrywasmostlyruralatthetimeandfarmersobjected,partlybecauseitwouldmeantheylostanhourofmorninglight.AndsodaylightsavingtimewasabolisheduntilatthestartofWWII,onFeb.9,1942,PresidentFranklinRooseveltre-establisheddaylightsavingtimeyear-round,callingit“WarTime.”Afterthewar,afree-for-allsysteminwhichU.S.statesandtownsweregiventhechoiceofwhetherornottoobserveDSTledtodisorder.Andin1966,toavoidsuch“WildWest”confusion,CongresspassedtheUniformTimeAct.ThatfederallawmeantthatanystateobservingDST—andtheydidn’thavetojumpontheDSTsystem—hadtofollowauniformtimingsystemthroughoutthestateinwhichdaylightsavingtimewouldbeginonthefirstSundayofAprilandendonthelastSundayofOctober.Then,in2007,theEnergyPolicyActof2005wentintoeffect,expandingthelengthofdaylightsavinglimetothepresenttiming.1、Whatisthepassagemainlyabout?A．WhatisDaylightSavingTime?B．HowdidDaylightSavingTimestart?C．WhoproposedDaylightSavingTime?D．WhyDaylightSavingTimeisadopted?2、Itcanbeinferredthat.A．DSTwasadoptedintheUSmainlytopreservefuelB．DSTlastedfor24yearsintheUSbeforebeingcanceledC．itisstillfreeforthestatesintheUStoadopttheDSTornotD．farmersintheUSrejectedDSTforlosinganhourofeveninglight3、Whatisthemeaningoftheunderlinedexpression“rejoicingover”inparagraph2?A．Takingpridein. B．Takinginterestin.C．Feelingregretfor. D．Feelingsurprisedabout.4、WhichcountryadoptedDSTearliest,accordingtothepassage?A．France. B．Germany.C．England. D．TheUnitedStates.25．（10分）HowtoGettheBestHotelDealTakingtheentirefamilyonvacationcanaddupquickly—flights,rentalcar,gas,meals,snacks,andofcourse,hotels.However,bydoingsomeresearchandusingthreelittlewords,youcouldendupsavingalotofmoneyonaccommodations.First,searchhotelbookingsiteslikeTripAdvisororExpediaandcheckoutthehotelratesinyourlocationforthedatesyouwouldliketobook.Takedownallthepricesyoufindonlineforthathotel.Butevenifyoufindastealofadealor“aspecialdiscount”,don’tpressthebookbuttononthewebsitejustyet.Afterresearchingpricesonline,expertssaythebestwaytogetthelowesthotelrateistocallthehoteldirectly—notanyofthecustomerserviceor1-800numbersthatcouldbelistedasacontactnumber,especiallyforachainhotel.Thenyou’regoingtodropsomemagicwords.Whileyoumightbetemptedtoaskfor“thebestdeal”or“thelowestrate”,yoursecretweaponhereistousethephrase“cheapestnonrefundablerate.”AccordingtoexpertsatTravel+Leisure,thatphrasetriggershotelstafftosearchfortheroomthatwillcostyoutheleastforyourvacation.Ifyoudoenduptryingtonegotiateabetterprice,mentionthenumbersyoufoundonlineandthenreducethosepricesby20percent.Apparentlyhotelspayaheftyfeetobelistedonhotelbookingsites,andthat20percentcouldactuallymeanmoremoneythantheywouldgetifyoubookedthroughoneofthem.Justdon’twaituntilthelastminutetoscoreadeal,becausethatcanleadtopayingmore,notless.FredLalonde,founderofthetravelserviceHopper,toldTravel+Leisurethatthebestdealsonhotelsareusuallyavailabletwotothreemonthsaheadofthevacationdate,potentiallysavingyoumorethan$270foraneight-daystay.120、Whatdoestheunderlinedpart“threelittlewords”inParagraph1referto?A．Aspecialdiscount B．ThebestdealC．Thelowestrate D．Cheapestnonrefundablerate.1、Accordingtothepassage,thepreferredwaytogetthebesthoteldealisto________.A．callthetargethotelstobargainwiththestaffB．collectandcomparethepricesfoundonlineC．bookhotelsjustbeforeyourdeparturetimeD．turntohotelbookingsitesforadiscount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）SteveMorriswasnotatypicalchild．Butwhenhewasnine，his1tobetypicalwasverystrong．OfallthepeopleSteveremembered，onewoman，hisprimary-schoolteacher，MrsBeneduci，2inhismind．MrsBeneduciwasawiseperson．Sherealizedthatmerewordstoakid3notcarrymuchweight．Soinstead，withthesecretaidofalittlemouse，shefounda4toshowStevehisrealtalent．OnedayMrsBeneducibeganher5withthequestion:whowasAbrahamLincoln?Amywasrequiredtoanswerit．Shesaidina6voice，“Uh．．．he，uh，hadabeard．”Thestudentsburstinto7．“Steve?”saidtheteacher．Stevestoodupand8confidently，“Hewasthe16thPresidentoftheUnitedStates．”9withSteve’sperformance，theteacherthenaddedthatAbrahamLincolnhadbeenPresidentduringtheCivilWar…Thenshestopped，10shewaslisteningtosomething．Itsoundedlikeamouse．Thelittlegirlsscreamed．Somestoodontheirchairs．MrsBeneducitriedto11thestudentsdown，andaskedStevetofindthepoorlittlecreature．Stevesatstraightupinhischairandaskedeverybodytobe12．Inthesuddenstillnessheraisedhishead，hesitatedforamoment，and13tothewastebasket．“He’srightoverthere!”saidSteve14．“Icanhearhim!”Andsohewas:afrightenedlittlemousethatwas15beneaththewastepaper，hopingtogo16．Naturegavehimaremarkablepairof17tomakeupforhisblindness．Intheheartofsmall，sightlessSteveapridewasborn，andthatprideiswithhimstill．18theincident，MrsBeneduciwouldcontinueto19histalent，andshealwaysremindedSteveofthelittlemouse．Alittlemousegaveasmallboy20．SteveMorrisisnowasingerwhoispopularallovertheworld．1、A．limit B．desire C．direction D．courage2、A．standsout B．turnsup C．getsthrough D．givesaway3、A．will B．shall C．might D．must4、A．control B．chance C．power D．choice5、A．rest B．holiday C．study D．class6、A．low B．proud C．long D．wide7、A．tears B．laughter C．cheers D．applause8、A．decided B．predicted C．answered D．required9、A．Satisfied B．Confused C．Thrilled D．Surprised10、A．evenwhen B．sothat C．justbecause D．asthough11、A．calm B．lie C．keep D．settle12、A．relaxed B．anxious C．quiet D．active13、A．pointed B．walked C．fell D．rushed14、A．slowly B．proudly C．carefully D．luckily15、A．running B．escaping C．fighting D．struggling16、A．undiscovered B．unexplained C．untreated D．unhurt17、A．arms B．hands C．legs D．ears18、A．Before B．In C．After D．For19、A．test B．encourage C．inspect D．feel20、A．excitement B．patience C．warmth D．confidence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）Tracy:Youknowtheweather1．(be)awfulsofarthissummer.Dean:Iknow.ThisisveryunusualforJapan.Usuallybynowit’sreallyhotandhumid.I’mnotsurewhy,butthissummerwe’vehadverylittlerainand2．(surprising)cooltemperatures.Tracy:Well,eitherwayIloveit.Irememberlastsummer.Oh,itwasterrible.Ididn’thaveanairconditioner,andmyapartmentwasonthe3．(five)floor.EverynightIsleptontopofmybed4．thewindowsopenandafansixinchesfrommyface.Dean:That5．(sound)prettyrough.IguessI’vegotusedtotheheat,6．Idon’tnoticeitasmuch.However,lastyearwasdefinitelyalot7．thanthisyear.And,tobehonest,Iamenjoyingthebreak.8．aresummerslikeinyourhometown?Tracy:Foronething,there’slittlehumidity.Seattleisrighton9．oceansowealwayshaveaniceoffshorebreeze10．(blow)in,anditdoesn'treallygethotuntillateJuly.That'swhyIfounditsooppressive(闷热的)lastyear.Oursummersarejustsodifferent.Dean:Interesting.Seattlesoundslikeagreatplacetovisitduringthesummer.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限一词;2、只允许修改10处，多者（从第11处起）不计分。PekingMan,theearliesthumanancestorthatlivedinChinabetweenroughly200,000or750,000yearsago,wasawood-workingandfire-usingman、Themanunimaginablelikedtodrillholesintoobjectsforunknownreasons、Later,somenewdiscoverypaintedapictureofahumanancestorwhowasmanymorecomplicatedthanpreviouslybelieved、PekingManfirstdiscoveredin1923inacavenearthevillageofZhoukoudian,closetoBeijing、DuringWorldWarTwo,fossilsofPekingManwentmissed、ResearchersdosomelabworkincludingusingmicroscopestolookatartifactsmadebyPekingMan、Beside,scientistswerestilltryingtodeterminethedetails、Finally,theanalysisshowedthatwhatPekingManhadtheinterestinclothesandthatsometoolswereusedforremovinganimalskins、第二节书面表达（满分25分）29．（25分）假如你是李华，加拿大籍教师Smith于一年前来到你班上任教英语。在他的帮助下，你的英语学习有了很大进步。现在他工作结束，即将离任回国。请你写一封电子邮件对他的工作表示感谢，并预祝他旅途愉快。要求：邮件内容需含以下要点：1．过去学习英语困难（英语单词记不住；害怕开口说英语等）2．Smith老师建议(课余多读英语杂志书籍,多听英文歌曲；多用英语交流等)3．现在学习情况（对英语很感兴趣；口语交际能力也得到了提高）注意：1.根据以上内容写一篇短文，不要逐句翻译，2.词数100左右。DearMr.Smith,______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

参考答案第一部分（共20小题，每小题1.5分，满分30分）1、A2、A3、B4、A5、B6、C7、D8、A9、D10、D11、A12、C13、D14、C15、C16、C17、A18、B19、D20、C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、B2、B3、C22、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,theymuststaycompletelyfocused----whenitcomesoff,it’splaytime.Guidedogsworkveryhardeveryday,buttheyleadextremelyhap