2025屆遼寧省四校英語高三第一學(xué)期期末考試試題含解析

2025屆遼寧省四校英語高三第一學(xué)期期末考試試題注意事項(xiàng)：1．答題前，考生先將自己的姓名、準(zhǔn)考證號(hào)填寫清楚，將條形碼準(zhǔn)確粘貼在考生信息條形碼粘貼區(qū)。2．選擇題必須使用2B鉛筆填涂；非選擇題必須使用0．5毫米黑色字跡的簽字筆書寫，字體工整、筆跡清楚。3．請(qǐng)按照題號(hào)順序在各題目的答題區(qū)域內(nèi)作答，超出答題區(qū)域書寫的答案無效；在草稿紙、試題卷上答題無效。4．保持卡面清潔，不要折疊，不要弄破、弄皺，不準(zhǔn)使用涂改液、修正帶、刮紙刀。第一部分（共20小題，每小題1.5分，滿分30分）1．Dadisusedtosmokinganddrinking.There’snochance_____I’mabletotalkhiminto.A．whether;givingitupB．ofwhether;givingthemupC．that;gettingridofthemD．which;stoppingit2．Thoughsmall,thecountryhas_____plantsfromdesertgrassestotropicaljungle.A．extremeB．a(chǎn)bundantC．a(chǎn)rtificialD．poisonous3．—Haveyouheardofyesterday'sgasexplosion?—Yes.Onlytwoofthe35minersatthescene________tohavemadeitoutsafely.A．havethoughtB．a(chǎn)rethoughtC．hadthoughtD．werethought4．Marydoesn'twanttomovetoBeijingbecauseifshe_________there,shewouldn'tbeabletoseeherhusbandoften.A．wouldlive B．weretoliveC．haslived D．lives5．—Ineedtoadvertiseforaroommatefornextterm.—______?Maryisinterested.A．Whatfor B．WhynotC．Sowhat D．Whybother6．---HowwasyourtriptoXi'anlastmonth？--_____________.Itwasrainingcatsanddogsduringmystaythere.A．Wonderful B．ExcitingC．Notbad D．Itcouldn'tbeworse7．Don’tletyourselfbe______intobuyingthingsyoudon’treallywant.A．a(chǎn)dvocated B．clarified C．flashed D．persuaded8．Totellthetruth,Ididn’texpectthatthereweresomanypeople______theidea.A．supportedB．supportingC．tosupportD．havingsupported9．Janewenttoherteacherjustnow.She________aboutthesolutiontotheproblem.A．wonderedB．waswonderingC．hadwonderedD．wouldwonder10．—Iwasinformedthatyouwonthelottery?—Areyoukidding?MaybeIwillwinalotterywhen______.A．youcryforthemoon B．pigsflyC．a(chǎn)llgoodthingscometoanend D．yougetanewleaseonlife11．---MayIhelpyou？Youseemtobehavingsometrouble.----____________，thanks.IthinkIcanmanage.A．Noproblem B．It'sallrightC．ok D．Noway12．—MayIuseyournewdictionary?—It'soverthere．____． A．Feelfree B．Nevermind C．Mypleasure D．It'sOK13．---Canthose___________atthebackoftheclassroomhearme?---Noproblem.A．seat B．sitC．seated D．sat14．Thiscourseisofgreatinteresttostudents,_____toimprovetheirwritingskills.A．hopeB．tohopeC．hopingD．hoped15．Theclimateconferencewasattendedby11,000people,itthelargestUNgatheringeverheld.A．making B．tomake C．made D．tobemaking16．Thenationalparkhasalargecollectionofwildlife,________frombutterfliestoelephants.A．torange B．rangeC．ranging D．ranged17．Thevarietyoffoodattherestaurantislimited,buteverymealcanserveatleasttwopeopleandisunder￥10,sonotonlyisit______butpracticalaswell.A．a(chǎn)daptableB．a(chǎn)djustableC．a(chǎn)doptableD．a(chǎn)ffordable18．—Heiseagertotrysomethinghehasnevertriedbefore.—Oh,Isee.That’s_______he’sdifferentfromothers.A．whenB．whereC．howD．what19．—IfeelsonervousabouttheNationalEnglishSpeechCompetitiontomorrow.—.A．Ireallyenvyyou B．GladtohearthatC．Soundsgreat D．Takeiteasy20．HelensaidthatshewouldbringmeJustinBieber'slatestCDthenextday,butshe.A．wouldn't B．didn'tC．hadn't D．hasn't第二部分閱讀理解（滿分40分）閱讀下列短文，從每題所給的A、B、C、D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。21．（6分）WhistlerWorldskiSnowboardFestivalTherearemanyreasonswhytheWorldSki&SnowboardFestivalhasbeensopopularforthepast22years.KnowntolocalsasWSSF,thefestivalcombinesspringenergywithWhistlersuniquemountainculture.Itisbeingheldfrom10thAprilto15thApril,attheWhistlerConferenceCentreinWhistler.Canada.Therearephotography,filmmaking,skiandsnowboardcompetitions.WSSFScheduleBelowaresomeoftheevents.Tuesday,April10Eightfamousadventurersgivevisualstoriestotheaudience.TheeightpeopleincludemountainbikersDarrenBerreclothandHansRey,climberJohnLong,diverJillHeinerth,snowboarderAlexWarburton,skierJohnnyThrash,andadventurersCaseyBrownandTedBaird.Wednesday,April11Thisfreeexhibitgivesyouadeeperlookatmountainculture.Itgoesfurtherthansimplylandscapesandwildlife.TheexhibitwillbeopentoeveryonefromApril1ltoApril13.Teamshave72hourstoshoot,editandproduceashortfilmtakenwithin100kilometresofWhistlerVillage.Judgeswillchoosejustonewinnerfor“Bestofshow”.Thursday,April12Sixphotographerscompetetoamazethejudgesandtheaudiencewithpicturesthatrecordsports,cultureandthehumanspirit.Friday,April13WhistlerBlackcombisthefourthstopinBritishColumbia,Canada,forthissnowboardcontest.Thecontestisfreetoenterandthetwochampions(manandwoman)willshareC$50,000.Saturday,April14Competitorsincludeamixofracinglegends.Theaudiencecanviewtheskiraceforfree.*TheskiracedependsontheweatherandisscheduledforSaturday,April14butmaybemovedtoFriday,April13-checkwssf.comforup-to-dateinformation.1、WhatcanwelearnabouttheWorldSkiSnowboardFestival?A．Itisaseven-dayfestivalB．ItisheldinAprileveryyear.C．Ithasahistoryofovertwentyyears.D．Itisbestknownforwhistlersmountainculture.2、WhatcanvisitorsdoduringtheWorldSkiSnowboardFestival?A．EnjoyfilmsmadebycompetitorsonApril11.B．SeeeightfamousmountainbikersonApril10.C．WatchaskiracethatwilldefinitelyhappenonSaturday.D．ViewanexhibitfeaturingmountaincultureonApril12.3、Whichoftheeventsmentionedinthetextoffersaprize?A．Theskirace.B．Thesnowboardcontest.C．Thephotographycompetition.D．Thefilmmakingcompetition.22．（8分）Americanwomenwhoworkascomputerprogrammers,chefsanddentistsearn28percentlessthanmendoingthesamejobs.Thosearethejobswiththebiggestwagedifferencesbetweenmenandwomen,accordingtoanewstudy.Overall,thestudyfoundthatwomenearn5.4percentlessthanmenfordoingthesamejob,inthesamelocationandforthesameemployer.ThewagedifferencesbetweenwomenandmenweresimilarintheUnitedKingdom,Australia,GermanyandFrance.5.4percentisabigdifferenceinpaybetweenmenandwomenbecauseitcannotbeexplainedbywomenandmentakingthesamekindsofjobs.Itcanonlybeexplainedbybias(倔見)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.23．（8分）IvisitedCopenhagenforthefirsttimelastEaster.Asastudent，I’malwaysstrappedforcash，soIassumedIcouldonlyaffordtobreathetheair—butluckilyeverythingaboutCopenhagenisbreathtaking.IwasstayinginanAirbnb,andrentedabikesoIcouldcovermoreground.OneofthefirstplacesIvisitedwastheRundetaarn,or“roundtower”builtinthe17thcenturyasanastronomicalobservatory.Ithasanequestrianstaircase(awidesetofstairsbigenoughforhorsestouse)thatwentonandon.AsIwasgoingup,Istoppedtovisitthetower’slibraryhall.Atthetop,there’saglassplatformthatgivesaview80-footstraightdown,aswellasabellloft.Luckily,theviewsoverCopenhagenfromthetopwerewellworththeclimb.Aftercomingdown,IhikeduptotheKastelletFortresstoseethefamousLittleMermaidstatue.Takingaphotowithherwasalmostimpossiblewithallthetouristscrowdingaround—butsittingthereandhearingthelappingwavesofthedeepblueBalticSea,waitingforthesuntoset,wasanunforgettableandcalmingexperience.Thenextday,IvisitedtheGlyptotekartmuseum,exploringthegrandexhibits.IlookedintothemarbleeyesofmanyRomangods,andwalkeddowndimlylitstaircasestoseemummiesfromEgypt.BeforeIunwillinglyboardedthetrainbacktotheairport,ItoldmyselfthatImustvisitagain—toexperiencethethrillsofTivoliGardens,trymoreofthestreetfoodandeverythingelsefromthisamazingcity.1、Whydidtheauthorrentabike?A．Becauseshelovedtorideabike.B．Becauseshedidn’taffordtorentacar.C．Becauseshefoundnowheretorentothervehicles.D．Becauseshewantedtoseeasmanyattractionsaspossible.2、WhatdidtheauthorfinddifficultattheKastelletFortress?A．Findingasittingplace.B．Waitingforthesuntoset.C．Listeningtothesoundofwaves.D．Havingaphototakenwithastatue.3、Whichofthefollowingdidn’ttheauthorvisit?A．Rundetaarn.B．TivoliGardens.C．Glyptotekartmuseum.D．LittleMermaidStatue.4、Whatistheauthor’spurposeinwritingthetext?A．Torememberaholiday.B．Tointroduceanewattraction.C．Tosharehertravelexperience.D．ToshowherloveofCopenhagen.24．（8分）Manyofuslistentomusicwhilewework,thinkingthatitwillhelpustoconcentrateonthetaskathand.Andinfact,recentresearchhasfoundthatmusiccanhavebeneficialeffectsoncreativity.Whenitcomestootherareasofperformance,however,theimpactofbackgroundmusicismorecomplicated.Theideathatlisteningtomusicwhenworkingisbeneficialtooutputprobablyhasitsrootsintheso-called“Mozarteffect”.Putsimply,thisisthefindingthatspatialrotationperformance(空間旋轉(zhuǎn)能力)isincreasedimmediatelyafterlisteningtothemusicofMozart,comparedtonosoundatall.Howsoundaffectsperformancehasbeenthetopicofresearchforover40years,andisobservedthroughaphenomenoncalledtheirrelevantsoundeffect.Tostudyirrelevantsoundeffect,participantsintheresearchareaskedtocompleteasimpletaskwhichrequiresthemtorecallaseriesofnumbersorlettersintheexactorderinwhichtheysawthem.Thetrickythingisbeingabletodothiswhileignoringanybackgroundnoise.Twokeycharacteristicsoftheirrelevantsoundeffectarerequiredforitsobservation.First,thetaskmustrequirethepersontousetheirrehearsalabilities(復(fù)述能力),andsecond,thesoundmustcontainacousticalvariation(聲學(xué)變化).Wherethesounddoesnotvarymuchacoustically,theperformanceofthetaskismuchclosertothatobservedinquietconditions.Theirrelevantsoundeffectitselfcomesfromattemptingtoprocesstwosourcesoforderedinformationatthesametime—onefromthetaskandonefromthesound.Unfortunately,onlytheformerisrequiredtosuccessfullyperformtherecalltask,andtheeffortinensuringthatirrelevantorderinformationfromthesoundisnotprocessedactuallyhinders(阻礙)thisability.Asimilarconflictisalsoseenwhenreadingwhileinthepresenceoflyricalmusic.Inthissituation,thetwosourcesofwords—fromthetaskandthesound—areinconflict.Thecostispoorerperformanceofthetaskinthepresenceofmusicwithlyrics.Whatthisallmeansisthatwhetherhavingmusicplayinginthebackgroundhelpsorhindersperformancedependsonthetaskandonthetypeofmusic,andonlyunderstandingthisrelationshipwillhelppeoplemaximizetheirproductivitylevels.1、“Mozarteffect”ismentionedto________.A．explainhowmusiccanrelaxpeopleB．showmusiccanimproveperformanceC．a(chǎn)dvisepeopletolistentoMozartmusicD．stressMozartmusicgainswideattention2、Itcanbeinferredthatparticipantsintheresearch________.A．haveimprovedtheirrehearsalabilityB．performbetterinthequietconditionsC．ignorethebackgroundnoisesuccessfullyD．preferthemusicwithgreatsoundvariation3、Paragraph6iswrittento________.A．supportanidea B．makeacontrastC．introduceatopic D．describeafact4、Whatisthebesttitleforthepassage?A．MusicshapesyourlifeB．MusicdevelopsyourcreativityC．ChoosequietmusicforyourworkD．Doesmusicmakeyouconcentrate?25．（10分）OnSeptember10,2018,JackMa,founderandchairmanofChinesee-commercegiantAlibaba,announcedhissuccessor(繼任者)atthecompanyhefounded19yearsago.Surprisingly,inacountrywhere70to80percentofprivatecompaniesarestillfamilyrun,Mr.Madidnotnameafamilymember.Rather,oneoftheworld’slargeste-commercecompanieswillbeledbyDanielZhang,an11-yearAlibabaoldhandchosenonlyforhis“professionaltalent.”Thehistoryofmanycountriescanbemarkedbyatrendawayfromdependenceonfamilysuccessioninbusiness,orthebeliefthatqualitiesofleadershipflowthroughbloodlines.Maisatrueinnovator(創(chuàng)新者)inmanyways,mostfamouslyforbuildinganinnovativeonlineshoppingmarketworthmorethantheeconomiesofmostcountries.Buthislegacy(遺產(chǎn))maylieinshowinghowChinaaswellasmuchofAsiacanproducefoundersofsuccessfulorganizationsunwillingtopassthetorchtorelatives.“AlibabawasneveraboutJackMa,”hestatedinannouncinghissuccessionplan.Instead,theformerschoolteacherwhocamefromlowlyoriginsissteppingbackfromday-to-dayoperationsbecausehehasbuiltasystemthattakesrootinacompanyculturebasedoninnovation,transparency,andresponsibility.“Forthelast10years,wekeptworkingontheseingredients,”hestated.Thecompany’sfuturewilldependondevelopingawealthoftalentthatdrivesinnovation,hesaid.Andinasocietywithalongtraditionofcautiousdistrusttowardthoseoutsidethefamilycircle,Mahasbuiltan“architectureoftrust”withcustomers,whonumberoverhalfabillion.ChinesenowreadilyrelyonAlibaba’sonlinepaymentsystem,itsratingsofproductsandservices,andothertrust-buildingsystemsormethodspioneeredbythecompany.China’srapidgrowthnowproducesanewbillionairealmosteveryday.Manyofthem,likeMa,havefavoredsystemsofmanagementbasedontalentandhonesty.Asmanycountrieshavediscoveredastheyprogress,itisbettertoswiminatalentpool,notagene(基因)pool.1、WhatdoweknowaboutDanielZhangfromthepassage?A．He’satalentedprofessor.B．He’sanexperiencedmanager.C．He’sasuccessfulfounder.D．He’sChairmanofAlibaba.2、WheredoesMa’slegacyliein?A．Becomingasuccessfulinnovativefounder.B．Castingdoubtontraditionalsuccessionplan.C．Providingcreativeanswerstosuccessionproblems.D．Representingtrendstowardsnon-family-runcompanies.3、Whatseemstobetherecipeforthecompany’sfuturesuccess?A．Trust-buildingmethods.B．The“architectureoftrust”.C．Acultureoftalentdevelopment.D．Thelatestsuccessfulinnovations.4、Whatcanbeasuitabletitleforthetext?A．PreferQualitiestoBlood.B．TrainaPotentialSuccessor.C．FavorGenesoverTalents.D．ProvideNewManagement.第三部分語言知識(shí)運(yùn)用（共兩節(jié)）第一節(jié)（每小題1.5分，滿分30分）閱讀下面短文，從短文后各題所給的A、B、C和D四個(gè)選項(xiàng)中，選出可以填入空白處的最佳選項(xiàng)．26．（30分）Thestorygoesthatsometimeago,amanhadaverylovelylittledaughter.Onedaytheman1his3-year-olddaughterfor2arollofgoldwrappingpaper.Moneywastightandhebecame3whenthechildtriedtodecoratea4toputundertheChristmastree.5,thelittlegirlbroughtthegifttoher6thenextmorningandsaid,“Thisisforyou,Daddy.”Themanwas7byhisearlier8,butgotangryagainwhenhefoundouttheboxwas9.Heyelledather，saying,“Don’tyouknow,whenyougivesomeoneapresent,thereis10tobesomethinginside?”Thelittlegirllooked11athimwithtearsinhereyesandcried,“Oh,Daddy,it’snotempty12.Iblewkissesintothebox.Theyareallforyou,Daddy.”Thefatherfeltregret.He13hisarmsaroundhislittlegirl,andbeggedforher14.Onlyashorttimelater,an15tookthelifeofthechild.Itisalsotoldthatherfatherkeptthatgoldboxbyhisbedformany16andwheneverhewasdiscouraged,hewouldtakeouta(n)17kissandremembertheloveofthechildwhohadputitthere.Inaveryrealsense,eachoneofus,ashumanbeings,hasbeengivenagoldcontainer18withunconditionalloveandkissesfromourchildren,familymembers,friends,andGod.Thereissimplynoother19,anyonecouldhold,more20thanthis.1、A．a(chǎn)sked B．praised C．begged D．punished2、A．wasting B．stealing C．selling D．holding3、A．glad B．a(chǎn)ngry C．sad D．upset4、A．room B．hall C．box D．ball5、A．However B．So C．Therefore D．And6、A．father B．mother C．teacher D．sister7、A．puzzled B．surprised C．scared D．embarrassed8、A．overwork B．overreaction C．overcoat D．overpass9、A．empty B．heavy C．full D．wet10、A．said B．believed C．supposed D．used11、A．down B．back C．up D．forward12、A．a(chǎn)tall B．a(chǎn)fterall C．a(chǎn)boveall D．inall13、A．put B．turned C．handed D．gave14、A．kindness B．forgiveness C．sadness D．carelessness15、A．event B．incident C．a(chǎn)ccident D．a(chǎn)ction16、A．days B．months C．nights D．years17、A．imaginary B．kind C．gentle D．warm18、A．filled B．pleased C．crowded D．equipped19、A．world B．feeling C．possession D．love20、A．expensive B．precious C．comfortable D．interesting第二節(jié)（每小題1.5分，滿分15分）閱讀下面材料，在空白處填入1個(gè)適當(dāng)?shù)膯卧~或括號(hào)內(nèi)單詞的正確形式。27．（15分）語法填空DonRitchiewasafamousAustralianman.Fornearly50years,hesuccessfullystopped160peoplefromkilling1．(they)atacliff(懸崖),withjustakindwordandasmile.Donwasarealgentleman,hepurposelychosetoliverightacrossthestreetfromthecliff,justbecausehewantedtosavelivesof2．(stranger).Hewouldwakeupeverymorningandlookoutofthewindowforanyone3．(stand)tooclosetotheedgeofthecliff.Ifhesawsomeoneandthoughttheymightjump,hewould4．(simple)walkoverwithasmileandsay,“IstheresomethingIcoulddotohelpyou?”Thatsoundsverysimple,5．itworked–Ritchietriedtohaveatalkwiththesepeopleandendedupinvitingthembacktohishouse6．teaorbreakfast.Inasituation7．mostpeoplewouldturnablindeye,withsuchsimpleactionstakenbyDon,hesaved160lives.He8．(give)theLocalHeroAwardinAustraliain2011.Donpassedawayattheageof85in2012.Hisstory9．(touch)theheartsofallAustraliansandchallengedustorethink10．itmeanstobeagoodneighbor.第四部分寫作（共兩節(jié)）第一節(jié)短文改錯(cuò)（滿分10分）28．（10分）LastSaturday,momandIwenttobuyadownjacketformygrandpa、Whenwegottoabigstore,wesawdownjacketsofvarycoloursandstyles、Thereweresomanyofthemthatitspentusquiteawhiletodecidewhichonetobuy、Finally,underthehelpoftheshopassistant,heselectedablackthickjacketforgrandpa、Immediately,wereturnedbackhometoshowittomygrandpa、Seeingit,hewasveryhappyandcouldn’twaittoputon、Butwewereannoyingtofindsomethingwaswrongwiththezipper、Hurriedly,Itookitbacktothestoreandexplainedtotheshopassistanttheproblem、Tomysatisfaction,sheisverykindandhelpedmechooseanotheronepatiently、Standinfrontofthemirror,mygrandpalookedathimselfinthenewcoat,smilingcontently、WhatdelightedIwas!第二節(jié)書面表達(dá)（滿分25分）29．（25分）假定你是某中學(xué)學(xué)生李華。你的美國(guó)筆友Zoey對(duì)目前國(guó)內(nèi)的交通出行很感興趣，來信詢問相關(guān)情況。請(qǐng)你用英文給她寫一封回信，內(nèi)容包括：1．現(xiàn)在中國(guó)人出行的主要交通工具；2．日常工作和生活中，人們?nèi)绾芜x擇出行方式；3．期望能了解英國(guó)的相關(guān)情況。注意：1．詞數(shù)不少于100；2．開頭和結(jié)尾已給出，不計(jì)入總詞數(shù)。DearZoey,IamwritingtotellyousomethingaboutthepresenttransportationinChina.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Yours,LiHua

參考答案第一部分（共20小題，每小題1.5分，滿分30分）1、C2、B3、B4、B5、D6、D7、D8、B9、B10、B11、B12、A13、C14、C15、A16、C17、D18、B19、D20、B第二部分閱讀理解（滿分40分）閱讀下列短文，從每題所給的A、B、C、D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。21、1、C2、D3、B22、Anewstudysuggeststhatwashingdishesbyhandishealthierthanusingadishwasher.Nobodylikesdoingthedishes,butitturnsoutthatdoingthistaskmightpayoffinanunexpectedway.AccordingtoanewstudypublishedintheJournalofPediatrics,washingdishesbyhandinsteadofusingadishwashermightpreventthedevelopmentofallergies(過敏).ResearchersinSwedensurveyedtheparentsof1,029childrenaged7and8.Theydiscoveredthatchildrenwhosefamilieshand-washedthedishesinsteadofusingamachinewerelesslikelytohaveallergies.Earlierresearchhasshownthatdisheswashedbymachinearecleanerthanthosewashedbyhand.Sowhywouldkidswhoeatoffofslightlydirtierplatesbebetteroffwhenitcomestopreventingallergies?Oneexplanationisbasedonatheoryknownasthe“hygienehypothesis”,whichsaysthereasonkidsdevelopallergiesisthattheirsurroundingsareactuallytooclean.Yourimmunesystemkeepsyouhealthybyfightinggerms(細(xì)菌)likebacteriaandviruses.Butwhenyouhaveallergies,itoverreactsandtriestofightordinarythingslikepollen(花粉)orcertainfoods.Beingexposedtogerms,especiallyearlyinlife,isgoodtrainingfortheimmunes