安徽滁州市来安县来安三中2026届高三上英语期末经典试题含解析

安徽滁州市来安县来安三中2026届高三上英语期末经典试题注意事项：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．Thehealthofgardenplantsdependsonthesoil_____--theproperbalanceofmineralpieces,organicmatter,airandwater.A．constructionB．conservationC．corporationD．composition.2．______tosuccesscan’tdefeatus.Instead,theycanonlymakeusstronger.A．Attempts B．BarriersC．Contributions D．Access3．Hisadvicemademehappy,but____othersangry.A．making B．tomake C．/ D．make4．Moreandmorepeopleprefertoliveinthecountryside,_______appealforthemliesinthequietandslow-pacedlife.A．who B．WhichC．whose D．what5．IamsorryIamverybusynow.IfItime,Iwouldcertainlygotothemovieswithyou.A．have B．hadC．havehad D．hadhad6．Advertisingoftenfunctionsasanindicatorfor______societyconsiderstobesociallyacceptableanddesirableatthetime.A．what B．whetherC．how D．which7．Sincethemiddleofthelastyear,thebike-sharingmarket_____inBeijing.A．boomedB．wasboomingC．willboomD．hasboomed8．Thestore______Iboughtmytextbooksishavingasalethisweek.A．that B．whereC．which D．why9．Whatdoyoudo,Susan?Iamaclerkinaforeigncompanynow.ButI__________Englishinahighschoolfor8years.A．teachB．hadtaughtC．havetaughtD．taught10．SorryI’msolate,butyoucannotimagine________greattroubleItooktofindyourhouse.A．whichB．howC．whatD．that11．Menmustconsidereating,drinking,clothingandfindingshelter_____theycanpursueentertainmentandrecreation.A．untilB．unlessC．beforeD．because12．——Whatwaswrong?Whydidn’tyougotothepicnicasscheduled?——I’msorry.I_________aseriously-injuredoldmantothehospital.A．woulddeliverB．deliveredC．haddeliveredD．wasdelivering13．Britishscientistshaveproduced_____theybelieveistheworld’ssmallestChristmascard．A．which B．who C．that D．what14．Nowtheworld’sattention________thestockingmarkets,astheyhavegreatinfluenceontheworld’seconomy.A．isfixingonB．isbeingfixedonC．hasfixedonD．hadbeenfixedon15．Thiskindofgelpenwhich______smoothlyisquitepopularwithstudents.A．iswrittenB．iswritingC．wroteD．writes16．—Let’sgotothecinemathisSundaymorning.—I’dloveto，butI________asavolunteerinmycommunitythen.A．willwork B．haveworkedC．willbeworking D．wasworking17．Thearthistorianstriedtofigureouthowthetemple__________whenbuiltaround15B．C．A．mightlook B．mighthavelooked C．mustlook D．musthavelooked18．Itisobvioustothestudents_____________theyshouldgetwellpreparedfortheirfuture.A．as B．thatC．which D．whether19．—Ihavebeenconsideringcancellingtheprojectbecauseitseemshardtogofarther.—Butit'stooearlyto________now.There'sstillmuchhope.A．pickupthepieces B．throwinthetowelC．gothroughyourpaces D．jumpdownyourthroat20．Tomakeextra-classeducationrunontherighttrack,Chinaistightening_____ofafter-schooltraininginstitutions.A．applicationB．regulationC．adaptationD．cooperation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）Microsofthasdevelopedanewsmartphoneappthatinterpretseyesignalsandtranslatesthemintoletters,allowingpeoplewithmotorneuronediseasetocommunicatewithothersfromaphone.TheGazeSpeakappcombinesasmartphone’scamerawithartificialintelligencetorecognizeeyemovementsinrealtimeandconvertthemintoletters,wordsandsentences.ForpeoplesufferingfromALS（渐冻症）,alsoknownasmotorneuronedisease,eyemovementcanbetheonlywaytheyareabletocommunicate.“Currenteye-trackinginputsystemsforpeoplewithALSorothermotorimpairmentsareexpensive,notstrongandhealthyundersunlight,andrequirefrequentre-checkandlotsofrelativelyfixedsetups,”saidXiaoyiZhang,aresearcheratMicrosoftwhodevelopedthetechnology.“Toeasethedrawbacks…wecreatedGazeSpeak,aneye-gesturecommunicationsystemthatrunsonasmartphone,andisdesignedtobelow-cost,stable,hand-heldandeasytolearn.”Theappisusedbythelistenerbypointingtheirsmartphoneatthespeaker.Achartthatcanbestucktothebackofthesmartphoneisthenusedbythespeakertodeterminewhicheyemovementstomakeinordertocommunicate.Thestickershowsfourgridsofletters,whicheachcorrespondtoadifferenteyemovement.Bylookingup,down,leftorright,thespeakerselectswhichgrids(格)theletterstheywantbelongto.Theartificialintelligencecomputationalprocedureisthenabletopredictthewordorsentencetheyaretryingtosay.Zhang’sresearch,Smartphone-BasedGazeGestureCommunicationforPeoplewithMotorDisabilities,issettobepresentedattheConferenceonHumanFactorsinComputingSystemsinMay.1、Whowillbenefitfromthenewly-developedApp?A．ALSvictims.B．peoplewitheyedisabilities.C．smartphoneaddicts.D．technologyresearchers.2、WhatarenotthebasicelementsusedintheApp?A．Artificialintelligence.B．Asmartphone’scamera.C．User’seyemovements.D．Hand-writtenletters.3、Whatdidtheresearchersdotoimprovethecurrenteye-trackinginputsystems?A．Tochecktheeyesignalstwicetomakeitfixed.B．Tocreateastableandconvenienteye-gesturecommunicationsystem.C．Topointthesmartphoneatthespeaker.D．Tolookup,down,leftorright.22．（8分）WhenIwasthreeyearsold,Icouldn'tspeak.ItwasastrangerealitythatnoneofthedoctorsIvisitedcouldunderstand.Oneday,Iwasshadowing（跟随）mymother.Shefoundherselflookinginamirror,andthroughitoureyesmet.Shebegantospeaktomethroughthereflection,andIslowlybegantomimic（模仿）hermouth'smovementsuntilIformedaword.ItturnedoutI'mdeafinmyleftear,andhaveaslightprobleminmyright.Beinghardofhearinghasbeendifficult,butI'veneverlivedinastateofself-hatingsorrow.Imaginebeingabletoshutoutallsoundasyoulayyourheaddowntosleepbysimplyrollingoverontooneside.That'smyrealitywhenIsleeponmy"goodear",anditmakesmefeellikeasuperherosometimes.Peoplecallmydeafsidemy"badear",butwhenIwearmyhearingaid,Ihaveaccesstoarangeoffeaturesthatsomeotherdeafpeopledon't.Incinemas,forexample,withoneclickofabuttonIcanenjoyawholefilmasthoughitwerewhisperedtomefromthemouthsoftheactors.Owningahearingaidhasn'talwaysfeltgood,however.OnthefirstdayIgotmyaid,whenIwaseight,Itookittoschoolforshow-and-tell.AsIexplainedhowitworkedtomyclassmates,aboyyelledout,"Aren'tthoseforoldmen?"Atthatmoment,Ifeltdifferent.Ittookalongtimeformetogetoverthatsenseofbeingsounlikemypeers.Butit'snotjustschoolkidswhocanmakeusdeafandhard-of-hearingpeoplefeellikeburdens.Everyvideoonsocialmediathatlackssubtitles（字幕）,forexample,meansanentirecommunityofdeafpeopleisunabletoenjoyit.Completelydeafpeopleareexcludedfromenjoyingmanymoviestoo,assubtitlesincinemasarealmostimpossibletofind.Andwithhearingaidscostingaround$2,500each,itcanbehardformanypeopletoaffordtobeabletolistentothethingsthatotherstakeforgranted.Asforme,Icanlistentomusic,enjoyfilms,andcatchconversations-I'mlucky.I'mdeaf,butIcanstillheareverything.I'vebeenblessedwithwonderfullifeexperiences,andIamhuman.Andwhenitcomestosleeping,I'mevensuperhuman.1、Howdoestheauthorviewhishearingdifficulty?A．It'sadisasterandcauseshimalotoftrouble.B．Itgavehimachancetoexperiencesomethingspecial.C．Itmadehimfeelembarrassedinfrontofhisclassmates.D．Ithelpedhimtoliveinhisownworldwithoutbeinginterrupted.2、Whatcanbeinferredfromthepassageabouttheauthor?A．Hewasborndeaf.B．Heisoptimisticandhelpful.C．Hisfamilyandclassmateshavesupportedhimalot.D．Thehearingaidbringsmuchconveniencetohisdailylife.3、Whatistheauthor'sattitudetowardhislife？A．grateful.B．anxious.C．excited.D．disappointed.4、Whatistheauthor'smainpurposeinwritingthearticle?A．Togiveadviceonlifetodisabledpeople.B．Toshowhowdifficultlifeisfordisabledpeople.C．Tosharehisexperienceoftreatingadisadvantagewithgratitude.D．Toshowtheconvenienceahearingaidcouldbring.23．（8分）Weallhavedefiningmomentsinourlivesmeaningfulexperiencesthatstandoutinourmemory.Manyofthemoweagreatdealtochance:aluckyencounter(相遇)withsomeonewhobecomestheloveofyourlife.Anewteacherwhospotsatalentyoudidn’tknowyouhad.Thesemomentsseemtobetheproductoffateorluck.Wecan’tcontrolthem.Butisthattrue?Nonecessarily.Definingmomentsshapeourlives,butwedon’thavetowaitforthemtohappen.Wecanbetheauthorsofthem.Itispossibletocreatedefiningmomentsifweunderstandmoreaboutthem.Ourresearchshowsthattheyallshareasetofcommonelements.Westartbyasking:whydoweremembercertainexperiencesandforgetothers?Inthecaseofbigdays,suchasweddings,theanswerisprettyclearit’sacelebrationthatisgrandinscaleandrichinemotion.Nosurprisethatit’smorememorablethanamathslesson.Butforotherexperiencesinlifefromholidaystoworkprojectsit’snotsoclearwhywerememberwhatwedo.Consideranexperimentinwhichparticipantswereaskedtosubmerge(浸入)theirhandsfor60secondsinbucketsfilledwith14℃water.(Remember14℃waterfeelsmuchcolderthan14℃air.)Theywerethenaskedtosubmergetheirhandsfor90secondsinsteadof60,butduringthefinal30seconds,thewaterwarmedupto15℃.Theparticipantswerethengivenachoice:wouldyouratherrepeatthefirsttrialorthesecond?Psychologistshaveexplainedthereasonsforthispuzzlingresult.Whenpeopleassessanexperience,theytendtoforgetorignoreitslength.Instead,theyseemtoratetheexperiencebasedontwokeymoments:thebestorworstmoment,knownasthepeak,andtheending.Intheparticipants’memories,whatstoodoutforthemwasthatthelongertrialendedmorecomfortablythantheshorterone.Sowhenweassessourexperiences,wedon’taverageourminute-by-minutefeelings.Rather,wetendtorememberflagshipmoments:thepeaks,thepits(低谷)andthetransitions.Whatwedon’trememberarethebitsinbetweensometimesthereislittletodistinguishoneweekfromthenext.Partlythisisbecausetheremaybeonlyadozenmomentsinyourlifethatshowwhoyouarethosearebigdefiningmoments.Buttherearesmallerexperiences,too,inthecontextofamemorableholiday,romanticdateorworkachievement.Onceweunderstandhowweremembercertainmomentsandwhy,wecanstarttocreatemoremomentsthatmatter.1、Howdoestheauthorunderstanddefiningmoments?A．Wecancreatedefiningmomentsinourlives.B．Definingmomentsarejustoutofourcontrol.C．Nosimilaritiesexistbetweendefiningmoments.D．Definingmomentsconsistofsmallerexperiences.2、Wecanlearnfromtheexperimentthat_____.A．thestrikingmomentsaremorelikelytoberemembered.B．thelengthofanexperiencedeterminesourmemoryofitC．itismeaningfultodistinguishthebitsinbetweenflagshipmoments.D．allthecomponentsofanexperienceshouldbeequallyremembered3、Whatwouldprobablybediscussedinthefollowingpartofthetext?A．Whattoprepareforlife’strials.B．Whytocreatedefiningmoments.C．Whomtooweourgoodfatesto.D．Howtocreatelife’sbigmoments.24．（8分）Americanwomenwhoworkascomputerprogrammers,chefsanddentistsearn28percentlessthanmendoingthesamejobs.Thosearethejobswiththebiggestwagedifferencesbetweenmenandwomen,accordingtoanewstudy.Overall,thestudyfoundthatwomenearn5.4percentlessthanmenfordoingthesamejob,inthesamelocationandforthesameemployer.ThewagedifferencesbetweenwomenandmenweresimilarintheUnitedKingdom,Australia,GermanyandFrance.5.4percentisabigdifferenceinpaybetweenmenandwomenbecauseitcannotbeexplainedbywomenandmentakingthesamekindsofjobs.Itcanonlybeexplainedbybias(倔见)againstwomen,orothercauses,suchaswomennotbeinggoodataskingforpay.Researchsuggeststhatwomendonotnegotiate(交涉)aswellasmenwhenitcomestopay.Andwomenaregenerallymoreuncomfortableaskingfellowemployeeshowmuchtheymake,sotheycanseeiftheyarebeingpaidfairly.Accordingtothestudy,womenearnedatleast15percentlessthanmeninthesejobcategories:psychologists,pharmacists,physicians,opticians,pilotsandgameartists.Butinthefieldsofsocialwork,sellingmerchandise,researchassistantsandphysicianadvisors,womenearnmorethanmen.Insocialwork,womenearned7.8percentmorethanmen,thereportsaid.Thatwasthejobcategorywiththebiggestadvantageforwomen.Itwasstillfarlessthanthe28percentpayadvantageformeninsomefields.Comparingsalariesforfull-timeworkers,womenearnonly79percentasmuchasmen.Overalifetime,thatmuchofadifferenceinpaycanamounttoalargeamountofmoney.Womenonlyearned57percentasmuchasmenin1975.Itisnowupt079percent.Thatisprogress,thereportsays,butnotenough.1、Whichofthefollowinghasthebiggestpaydifferencesbetweenwomenandmen?A．Apilot.B．Agameartist.C．Aresearchassistant.D．Acomputerprogrammer.2、Whydowomenearnlessthanmenwhendoingthesamejob?A．Theydon’ttrytheirbesttofightforbetterpay.B．Theycarelessabouttheirpaythanmen.C．Bossesusuallylooksdownuponwomen.D．Theydon-tworkaseffectivelyasmen.3、Howmuchincomedofull-timewomenworkerslosecomparedwithmen?A．5.4%.B．7.8%.C．21%.D．28%.4、Whatdoesthereportthinkofthewomen'spay?A．Itisgrowingratherquickly.B．Itisrisingbutnotsatisfying.C．Itisnotfairforwomenworkers.D．Itisreasonableforpresentsituation.25．（10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,becauseoftheThanksgivingbreak.（3）ArtStudyCenterThepubliciswelcometovisitthemuseums’ArtStudyCenter.However,youneedtoshowthetickets.Thetickets’details:$15Adults$13Seniors(65+)$10Non-Harvardstudents(18+)FreeHarvardfaculty,students,andstaff(plusoneguest)FreeYouthunder18FreeCambridgeresidents(proofofresidencyrequired)1、Whatshouldthevisitorsknowabouttheactivities?A．Anyadultneedsa$15tickettovisittheArtStudyCenter.B．VisitorscanjointheStudentGuideTouronSundaymornings.C．AnyHarvardstaffcanvisittheArtStudyCenterwithafriendforfree.D．Agroupof20visitorsshouldgathertogethertojointheStudentGuideTour.2、Whichinformationcanbefoundinthetext?A．OnecantakehotdogstoLevel4.B．NoticketisrequiredfortheStudentGuideTour.C．TheArtStudyCenterneedsregistration.D．TheArtStudyCenterwillholdspecialtoursonTuesdayandFridayat2pm.3、TheStudentGuideTourmightbeledbystudentsgoodat________.A．artB．scienceC．literatureD．politics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）“It’stimetowakeup,Emily,”mymomsingsfromthekitchen.I1toopenmyeyes.Whydidn’tthealarmonmycellphonegooff?Soon,Irealizetodayisthedayformy2:“Adaywithouttechnology.”Ididn’trealizewhatIhadgottenmyselfintountilIwasdrivingtoschoolinmycarin3.Noradiobroadcastingmyfavoritesongs.Ihadtosingtomyself.AssoonasIgottoschool,IwenttothelibrarytoprintoutmyEnglishproject.“Uh-oh,”Ithought.“Thisisn’tallowed.”TheschooldaywentonandIfinallygrew4therule.Thiswasn’tso5!Icoulddothiseveryday.Idrovehomeafterschool,andmy6eventuallywentintoafterschoolmode,7onwhatIwouldeatforsupperandwhowouldbevotedoffAmericanIdollaterthatnight.The8thingIknew,IwaschattingwithmyfriendsonFacebook,checkingemailandwatchingavideoonYouTube,allatthesametime!Mymomwalkedinandherjawdropped.“Whathappenedtono9?”Sheaskedme.Ifrozeforthesecondtimethatdayandforcedmyselftogobacktoreality.Ihad10.Thisexperiment,whichmanyteenagerswouldneverhavethecouragetoattempt,wasactually11tome.Eventhoughmyattemptatgoingaboutmydaywithouttechnologywasafailure,IrealizedthatifIreallytried,Iwouldbecompletely12withoutmyaddictiontotechnology.Hey,wemayevenfindweliketalkingtoourfamiliesinsteadofwatchingTV.Wemight13abicyclerideorawalktotheparkinsteadoflookingatpagesandpagesofFacebookpictures.Thesedevicescertainlymakemylifeeasier,andIdefinitelywouldn’t14gettingridofthemaltogether,butIdobelievethelivesoftoday’steenagerswouldbeobviously15withoutourtechnologydependence.1、A．tryB．pretendC．refuseD．decide2、A．expectationB．explorationC．experienceD．experiment3、A．doubtB．silenceC．surpriseD．excitement4、A．interestedinB．annoyedwithC．impatientwithD．usedto5、A．hardB．easyC．strangeD．comfortable6、A．ruleB．planC．mindD．role7、A．agreeingB．concentratingC．countingD．depending8、A．oneB．firstC．lastD．next9、A．homeworkB．controlC．pressureD．technology10、A．improvedB．startedC．failedD．finished11、A．availableB．convenientC．beneficialD．avoidable12、A．fineB．terribleC．creativeD．successful13、A．quitB．enjoyC．hateD．regret14、A．suggestB．mindC．practiceD．prevent15、A．boringB．complicatedC．difficultD．different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）Haveyouevernoticedthatyoufeelhappierandmorerelaxedafteryoueatbread,pastaorfruit?Doyoufindthatyouaremoreenergeticandawakeaftereatingyogurtorbeans?Thesethingsarenotaccidents.Foodaffect1．wefeelmorethanwethink.Scientistsresearching2．(it)effectonourmoodsarebeginningtounderstandthatwecaninfluenceourfeelingswithwhatweeat.Althoughourmoodsrelate3．havingvariousfoods,itisnotquiteassimpleaschoosingthefoodsfortherightoccasions.Ifthat4．(be)thecase,athleteswouldnoteatalotofcarbohydratesbeforearace.Anotherchemical5．(connect)withourmoodiscaffeine,which6．(find)incoffee,chocolateandmanytypesoftea,isperhaps7．worstthingyoucanhavewhenyouarefeelingstressed.Ofcourse,8．(enjoy)anicemealwithfriends,whateverweeat,canalsoimpactourspirits.Beingwithfriendsandfamilyplaysabigpartinexperiencinghappiness.Most9．(important),though,rememberthefollowingoldrule:trytoeatdifferentfood,10．nottoomuch.第四部分写作（共两节）第一节短文改错（满分10分）28．（10分）下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。增加：在缺词处加一个漏洞符号（/\）,并在其下面写上该加的词。删除：把多余的词用斜线（\）划掉。修改：在错的词下划一横线,并在该词下面写上修改后的词。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。Seniorthreestudentwillfacethequestionaftertheypassbythecollegeentranceexamination、ShouldIchooseagoodmajorandagooduniversity?Somestudentsprefertoconsidermajorsfirstsothattheycanlearnwhattheyareinterested、Itwillalsomakeitpossiblyforthemtotaketheirfavoritejobsinthefuture、However,thosewhothinkdifferentlybelievesthattheenvironmentisimportanttoone’sdevelopment、Theyalsobelievethatstudentsgraduatefromleadinguniversitiesareoftenmorelikelytofindagoodjob、Inmyopinion,thebestchoiceistochooseagoodmajoratagooduniversity、Butifwecanobtainboth,thefirstthingtoconsiderisagoodmajor,becausenomatterwherewestudy,theycanstillachievealotinthecertainfieldifwetryourbest、第二节书面表达（满分25分）29．（25分）Directions:WriteanEnglishcompositionin120-150wordsaccordingtotheinstructionsgivenbelowinChinese.假如你叫李华，你们学校将组织高三毕业典礼，并在校园网上公布了如下方案，征求师生意见。写一封邮件给活动组织者，内容须包括:❶你认为方案中哪些地方需要改进，并提出修改建议；❷你的理由。毕业典礼方案主题:再见了，母校（AlmaMater）！时间:2018年5月31日（周四）下午3:00流程:1.校长致辞2.颁发证书3.学生表演____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

参考答案第一部分（共20小题，每小题1.5分，满分30分）1、D2、B3、C4、C5、B6、A7、D8、B9、D10、C11、C12、D13、D14、B15、D16、C17、B18、B19、B20、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、B22、1、B2、D3、A4、C23、1、A2、A3、D24、Anewstudysuggeststhatwashingdishesbyhandishealthierthanusingadishwasher.Nobodylikesdoingthedishes,butitturnsoutthatdoingthistaskmightpayoffinanunexpectedway.AccordingtoanewstudypublishedintheJournalofPediatrics,washingdishesbyhandinsteadofusingadishwashermightpreventthedevelopmentofallergies(过敏).ResearchersinSwedensurveyedtheparentsof1,029childrenaged7and8.Theydiscoveredthatchildrenwhosefamilieshand-washedthedishesinsteadofusingamachinewerelesslikelytohaveallergies.Earlierresearchhasshownthatdisheswashedbymachinearecleanerthanthosewashedbyhand.Sowhywouldkidswhoeatoffofslightlydirtierplatesbebetteroffwhenitcomestopreventingallergies?Oneexplanationisbasedonatheoryknownasthe“hygienehypothesis”,whichsaysthereasonkidsdevelopallergiesisthattheirsurroundingsareactuallytooclean.Yourimmunesystemkeepsyouhealthybyfightinggerms(细菌)likebacteriaandviruses.Butwhenyouhaveallergies,itoverreactsandtriesto