四川省乐山四校2026届高三英语第一学期期末达标测试试题含解析

四川省乐山四校2026届高三英语第一学期期末达标测试试题注意事项：1．答题前，考生先将自己的姓名、准考证号填写清楚，将条形码准确粘贴在考生信息条形码粘贴区。2．选择题必须使用2B铅笔填涂；非选择题必须使用0．5毫米黑色字迹的签字笔书写，字体工整、笔迹清楚。3．请按照题号顺序在各题目的答题区域内作答，超出答题区域书写的答案无效；在草稿纸、试题卷上答题无效。4．保持卡面清洁，不要折叠，不要弄破、弄皱，不准使用涂改液、修正带、刮纸刀。第一部分（共20小题，每小题1.5分，满分30分）1．Citizensare_____toexercisetheirrights,butundernocircumstancescantheyviolateotherpeople’srights.A．ontrack B．onscheduleC．atease D．atliberty2．Wehavestrong________forbelievingthatthenewly-inventedmaterialisnotonlypopularbutalsoamonumenttotheeco-friendlylifestyle.A．grounds B．reasons C．causes D．purposes3．—Whydidyoulet____kidsoffthistime?—Ijustwanttogivethem____secondchance．A．/;the B．the;/ C．the;the D．the;a4．I________mycellphonelastnight.Nowthebatteryisrunningout.A．couldhavecharged B．mightchargeC．shouldhavecharged D．wouldcharge5．Theywereabroadduringthemonthswhenwewerecarryingouttheinvestigation,orthey__________toourhelp.A．wouldhavecome B．couldcomeC．havecome D．hadcome6．Keepupyourspiritsevenifyou_____failhundredsoftimes.A．must B．needC．may D．should7．Andycangotothecinematogetherwithushehasfinishedthetask．A．unless B．assoonas C．until D．aslongas8．Onthesurfaceofthewater________,whichspoiledthebeautifulsceneryofthepark.A．somedeadleavesdidfloat B．somedeadleavesfloatedC．floatedsomedeadleaves D．didsomedeadleavesfloat9．Heisn’tsuchaman______heusedtobe.A．who B．whomC．that D．as10．________twohoursdailyhasmadeconsiderabledifferencetomyphysicalcondition.A．TowalkB．WalkingC．WalkedD．Havingwalked11．Itissometimessaidthatasocietycanbejudged____thewayitcares____itsweakestmembers.A．on;about B．by;for C．under;with D．with;on12．ProfessorLiiswantedonthephone.Whereishe?Isawhimcoming,butinaminute,he_____.A．willdisappear B．hasdisappeared C．disappears D．disappeared13．_____theplantonceaweekifyouaretogetfruitintheautumn.A．WateredB．WateringC．TowaterD．Water14．—Didn’tyougofishingwithyourfriendslastSunday?—No.I______tothenursinghomeasusual.A．went B．go C．havegone D．hadgone15．Whatdoyouthinkofzoology?Inmyopinion,zoologyis______botany.A．asubjectsointerestingasB．asainterestingsubjectasC．asinterestingasubjectasD．interestingasasubjectas16．Agoodsuitcaseisessentialforsomeonewhois

______

asmuchasJackieis.A．ontheriseB．onthelineC．onthespotD．ontherun17．—I'dratherhavesomewine,ifyoudon'tmind.—________.Don'tforgetyouwilldrive.A．Anythingbutthat B．ByallmeansC．Takeiteasy D．Iwon'tsaynotothis18．Excuseme,wouldyouplease______mesomepetrol?Sorry.Ihaveonlyalittleleftinmycar.A．spareB．saveC．shareD．spend19．Johnhadplannedtomakeacompromise,buthechangedhismindatthelastminute.A．anyhow B．otherwiseC．therefore D．somehow20．I’mverygratefultomyhighschoolteachers,without______helpIwouldn’tbesoexcellent.A．whom B．their C．which D．whose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）Middleschoolgraduationstylemaybeabitmorecasualthanformalhighschoolorcollegeceremonies,butthemovefromjuniortoseniorhighschoolisstillanimportantoccasionthatcanbecelebratedinmanyways.Thedecisionwhetherstudentswillwearcapsandgowns（礼服）formiddleschoolgraduationisusuallyuptotheindividualschool.Somefeelthatthisistheperfectwaytocommemoratethespecialoccasion,whileothersfeelthecapandgownisunnecessaryforajuniorhighceremony.Forthoseschoolsthatchoosenottousecapsandgowns,itistypicallysuggestedthatstudentsweardressclothesfortheoccasion.Studentsmayalsobeencouragedtodressforgraduationinauniformmanner,suchaswhiteshirtsandblackpantsorskirts,oreducatorsmaysuggestdressingintheschoolcolors.Schoolsthatchoosetohavestudentswearacademicregalia（制服）fortheceremonymaychoosetopurchasegownsinavarietyofsizesfromastoresuchasGraduateAffairs,andthenletstudentsborrowthem,andreusethemeachyear.CapsmaybepurchasedbyaParent-TeacherOrganizationorbytheindividualgraduates.Parentsmaychoosetohostopenhouseorpartywhentheirchildgraduatesfrommiddleschool.Thisistypicallyaninformalaffair,suchasabarbequeorpoolparty,orsimplyappetizersorcaketohonorthegraduate.Simplebackyardgamessuchasvolleyball,bocceball,andFrisbeeareafunwaytoentertainyoungteens,tweens,andwell-wishers.Otherpartygamesandabandmightalsobeconsiderationsforalargeormorecomplicatedgathering.Whethersimpleorcomplex,therearemanywaystorememberagraduationfrommiddleschoolandmakethistimeaspecialandwonderfulone.Graduationeventsareperfectforhighlightingastudent’sachievementsduringmiddleschoolandpreparingforhisorherfuturesuccess.1、Whichofthefollowingcanreplacetheunderlinedword“commemorate”inParagraph2?A．passB．easeC．celebrateD．avoid2、Howdostudentsoftengetthegownsformiddleschoolgraduation?A．Theygetthemfromtheschool.B．Theypurchasethemfromstores.C．Theymakethembythemselves.D．TheyborrowthemfromtheGraduateAffairs.3、Whatcanwelearnfromthelasttwoparagraphs?A．Sportsgameswillbefreeforstudents.B．Parentsarelessinterestedinthecelebration.C．Studentswillexchangegiftsatthecelebration.D．Therearevariouswaystohonorthegraduation.4、What’stheauthor’sattitudetothecelebrationofmiddleschoolgraduation?A．Supportive.B．Doubtful.C．Ambiguous.D．Sympathetic.22．（8分）WhenWarrenBuffett,themostsuccessfulinvestor,wasaskedaboutthesecrettohiswealthandsuccess,herevealedthathereadeveryday,500pages,tobeprecise.Unfortunately,ifyou'realreadyworking9‒5,youmightnothavethetimetoreadatall,letaloneanentirebookaday.Butwhatifyoucouldgetthebenefitsofreadingwithoutsacrificingallofyourfreetime?Youcan!WiththeBlinkistapp,yougetthekeylearninginminutes,nothoursordays.Ourexpertstransformthesebooksintoquick,easy-to-understandinsights.Startwiththe5most-readbooks.1.ThirteenThingsMentallyStrongPeopleDon'tDobyAmyMorin12minreadingtime27kreadsDoyoustruggletogetoveryourfailures?Gettingoverthesecanhaveaprofoundinfluenceonyoureverydaylife.Morinshareshowhermostsuccessfulpatientsovercamethesedifficulties.2.HowtoStopWorryingandStartLivingbyDaleCarnegie19minreadingtime238kreadsEverwonderedwhyyoucan'tstopworryingaboutsomething?Bydefiningthesourceofyourstress,youcangetoveritonceandforall.Carnegiecameupwithaformulathathelpsyouhandleanyoverthinkingsituation.3.HowWillYouMeasureYourLife?byClaytonM.Christensen1minreadingtime17kreadsAreyoumakingtherighttrade-offs(权衡)inlife?Whilecareerachievementscanbesatisfying,neglectingyourfamilyandfriendscanbebadinthelong-run—inwaysyoucan'tevenimagine.4.FindingYourElementbyKenRobinson1minreadingtime62.4kreadsEveryonehasapassion.Ifyoudon'tknowwhatyoursis,itjustmeansyouhaven'tdiscoveredityet.Findouthowyoucanbreakfreeofsociety'sstrictrulesandfindyourcallinginlife.5.EmotionalIntelligencebyDanielGoleman16minreadingtime318kreadsDidyouknowifyourpulseraterisesabove100bpm,you'redeemedtooemotionaltothinkrationally?Youprobablyletfeelingscloudyourjudgmentmoreoftenthanyouknow.Golemanexplainshowyoucanavoidlettingyouremotionsruleyouandmakebetterdecisionsinlife.1、WhatkindofpeopledoestheBlinkistappbestsuit?A．Successfulinvestors. B．Richbusinessmen.C．Peoplewhohavelittletimeforreading. D．Studentswholovebooks.2、Whichbookhasbeenreadbythelargestnumberofpeople?A．HowtoStopWorryingandStartLiving.B．HowWillYouMeasureYourLife?C．FindingYourElement.D．EmotionalIntelligence.3、Whichbookoffersadvicetopeoplewhofeelstressed?A．ThirteenThingsMentallyStrongPeopleDon'tDo.B．HowtoStopWorryingandStartLiving.C．HowWillYouMeasureYourLife?D．FindingYourElement.23．（8分）EverylivingthingonEarthiseitheraplantorananimal,right?Wrong!Manyorganisms(有机体)inourworldareneither.Someofthemfloatthroughtheair,andsomeliehiddenintheground.Theydonotneedsunlighttosurvive,andiftheweatherbecomestoocold,theycanbecomeinactiveuntilconditionsimprove.Whatarethese?Theyarecalledfungi(菌类),andyouseethemalmosteveryday.Manykindsoffungiseemdisgusting,suchasthegreenblackthingsthatappearonthefoodwhicharelefttoolongintherefrigerator.Butotherkindsarenotsobad.Forexample,theyeast(酵母)thatisusedtomakebreadandmushroomsarebothfungi.Whatmakesfungidifferentfromplantsandanimals?Ananimalcanmovearoundbyitself.Fungigetaroundtoo,buttheydon’thavefeet,wings,ortails.Theyhavetowaitforwindorsomeotheroutsideforcetomovethem.Plantsaredifferentfromfungibecausetheyhavechlorophyll(叶绿素).Ithelpsthemmakefoodfromtheenergyinsunlight.Fungidonothavechlorophyll.Somefungiarebad,whileothersarenot.Somefungicausediseases,suchasathlete’sfoot,whichmakesfeetuncomfortable.Otherkindsoffungicanbeusedtomakemedicines,whichhavesavedmanylives.Fungicleanupmorethanwounds,though.Theyaretheworld’sfirstrecyclers.Withoutfungi,ourworldwouldbeamess.Sincefungicannotmaketheirownfoodasplantsdo,theymustgettheirfoodelsewhere.Manyfungigettheirfoodfromdeadplants.Theybreakthemdownandturnthemintosoil.Thefungigetameal,andtheworldgetsahousecleaning.1、Whatdoestheunderlinedword“disgusting”mostprobablymean?A．strong.B．unpleasant.C．active.D．small.2、Accordingtothepassage,.A．fungicanmoveeverywherebythemselvesB．fungiareunabletosurviveincoldconditionsC．somefungicanmakefoodfromtheenergyinsunlightD．somefungiareusefultohumansandtheenvironment3、Wherecanyoumostprobablyfindthispassage?A．Inasocialreport.B．Inabiologybook.C．Inageographymagazine.D．Inafarmingbook.24．（8分）Sometimes,youjustcan'thelpit.Maybeyou'rewatchingasadmovie,orthinkingaboutthefriendwhomovedaway.Nextthingyouknow,youfeelpressureinyourthroat,youreyesarewatering,andyouhavetearsrunningdownyourcheeks.AccordingtoAdVingerhoets,aprofessorofpsychologyatTilburgUniversity,intheNetherlands,whoisoneofthefewscientistsintheworldwhohavestudiedcrying,therearethreetypesoftears.Basaltearsarethefirsttype.TheyactasaprotectivebarrierbetweentheeyeandtherestoftheWorld.Nextarereflextears.Theywashyoureyescleanwhensomethinggetsinthem.Finally,thereareemotionaltears.“Thesearereleasedinresponsetoemotionalstates,”explainsVingerhoets.Scientistsbelievecryinghassomethingtodowithhowhumansdevelopedandlearnedtodependoneachother.“Humansareverycomplexsocialcreatures,”saysLaurenBylsma,aprofessorattheUniversityofPittsburgh,inPennsylvania."Itseemsthattearsservetoarousehelpandsupportfromothers,”Shesays.Vingerhoetsagrees,"Ithinkthatthereasonwhyhumansshedtears（流眼泪）hassomethingtodowithourchildhood,"hesays."that'sthetimewhenwearestilldependentonadultsforloveandprotectionandcare.Themajoradvantageofemotionaltearsisthatyoucantargetthemataspecificperson."Vingerhoetssaysthisabilitycouldhavecomeinhandyinprehistorictimes,whenhumanswerelivingamongdangerousanimals.Tearswereasaferwaytogetattention."Inthiscase,itisbettertouseasilentsignaltoaskforhelp,"hesays.VingerhoetsandByhmadofrequentstudiestobetterunderstandwhyhumanscry.AccordingtoByhma,thereisstillmuchmoretodiscover."It'ssurprising,"shesays,"howmuchwestilldon'tknow.”1、Inthescientists'opinion,cryingis________.A．asignofhumanevolutionB．aresultofhumankindnessC．acauseofpersonalgrowthD．ameansofrelyingoneachother2、Theunderlinedphrase"thisability"inthelastparagraphreferstotheabilityto________.A．seekhelpwiselyB．aimtearsatsomeoneC．cryemotionallyD．appealtootherpeople3、Fromthetext,welearnthatAdVingerhoetsandLaurenBylsma________.A．holddifferentopinionsaboutthecausesoftearsB．thinkpositivelyoftheeffectsoftearsC．areworkingtogethertostudytearsD．havelearnedenoughabouttears4、Whatcanbeasuitabletitleforthetext?A．ThetypesoftearsB．ThecomponentsoftearsC．ThescienceoftearsD．Theopinionsabouttears25．（10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.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）IwaswalkingaroundinaBigBazarstoredoingashopping,whenIsawa

cashiertalkingtoaboywhodidn’thaveenoughmoneytobuywhathewanted.Thelittleboywasstillholdingthedoll1hishand.Atthattime,IwalkedtowardhimandIaskedhimwhohe2togivethisdollto.

“It’sthedoll3mysisterlovedmost.Iwantedto4herforherBirthday.”Hiseyesweresosadwhilesayingthis.“MySisterhasgonetobewithGod.DaddysaysthatMommyisgoingtoseeGod

verysoontoo,soIthoughtthatshecould5thedollwithhertogiveitto

mysister.”Myheart6stopped.Thenheshowedmeaverynice7ofhim.Hethentoldme“Iwantmommytotakemypicturewithhersomysister

won’t8me,Ilovemymommy9Iwishshedoesn’thavetoleaveme.”Iquickly

10formywalletandsaidtotheboy.“Supposewe11again,justincase

youdohaveenoughmoney12thedoll?”

Iaddedsomeofmymoneytohis,withouthimseeingandwestartedtocountit.Thelittleboysaid,“Godheardmy13lastnight.ThankGodforgivingmeenough14to

buyit.”ThenIrememberedtwodaysbeforealocal15reportedan16inwhichawomanandalittlegirlwerebadly17．Thelittlegirldiedrightaway,andthemotherwasleftina18state.Wasthisthefamilyofthelittleboy?Twodays19,Ireadinthenewspaperthatthewomanhadpassedaway．Icouldn'tstopmyselffromgoingtothe20.Teary-eyed,Ifeltthatmylifehadbeenchangedforever．1、A．inB．onC．byD．at2、A．desiredB．wishedC．expectedD．longed3、A．whatB．whoC．thatD．which4、A．showB．respectC．representD．gift5、A．bringB．takeC．fetchD．send6、A．nearlyB．rarelyC．hardlyD．merely7、A．presentB．cardC．wishD．photo8、A．forgetB．forgiveC．hateD．dislike9、A．butB．sinceC．andD．or10、A．arrivedB．reachedC．gotD．searched11、A．checkB．findC．buyD．hold12、A．withB．forC．toD．on13、A．wishB．loveC．heartD．prayer14、A．timeB．belongingsC．moneyD．interest15、A．newspaperB．reportC．advertisementD．poster16、A．incidentB．accidentC．eventD．coincidence17、A．injuredB．harmfulC．woundedD．infected18、A．seriousB．disturbedC．steadyD．stable19、A．beforeB．afterwardsC．thenD．later20、A．storeB．hospitalC．homeD．funeral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）ItseemsthatChinesepeoplehavealwayslovedtodiscuss1．differencesbetweennorthernersandsoutherners.Now,anotherdifferencehasdrawnwideattention:thewaynorthernersandsouthernersshopforfoodatmarkets.PeoplefromsouthernChinanormallybuy2．theyneedforjustoneortwomealsatatime.It’snormalforthemtobuyjusthalfaChinesecabbage,two3．（potato）and25gramsofbeefatatime.4．,apersonmaybelaughedatiftheydothisinthenorth.Instead,buyingenoughvegetablesandmeatforaweek5．（be）normal.Thedifferencecouldbebecause6．thedifferentclimates.Foodcan7．（keep）foralongtimeinthenorth,asit’s8．（usual）coldanddrythere.Manynorthernershavethehabitof9．（store）foodforalongtime.Butduetothehotandwetweatherinthesouth,southernChinesepeopleprefer10．（buy）justenoughfoodforonemealoroneday.Otherwise,thefoodmaygobad.Maybethesedebatesaboutdifferentcustomshelpustounderstandeachotherbetter.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。Ihavealwaysbeenthebigfanofmusic,buttobehonestIdon’tknowanypersonwhomhaseveropenlydislikedit、It’soneoftruefriendinlifebecauseitcanbeenjoyedbyanyoneandeveryone、Withbooks,youhavetobeabletoread,andmusichasnolimits,nospecialconditionsandwaseasilyenjoyedbyall、Idon’tthinktherearemanythingsinlifeforwhichhavesuchadirectlyandclearinfluenceonone’sfeeling、Obvious,however,therearesomepeoplewhoaremuchinfluencedbymusic,andofcourseitdependswhatsortofmusicthey’reinto、Watchpeoplereacttooneoftheirfavoritesongsisactuallythebestthingever、第二节书面表达（满分25分）29．（25分）假如你叫李华．最近，你收到英国交换生Tom发来的电子邮件，询问中国的餐桌礼仪．请根据下面的写作提纲，给他回一封电子邮件．内容包括：1．写信的目的；2．介绍餐桌礼仪；3．表示祝愿．注意：1．词数100左右，开头和结尾已给出，不计入总词数；2．可适当增加细节，以使行文连贯．参考词汇：餐桌礼仪tablemannersDearTom，_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Yours，LiHua．

参考答案第一部分（共20小题，每小题1.5分，满分30分）1、D2、A3、D4、C5、A6、C7、D8、C9、D10、B11、B12、D13、D14、A15、C16、D17、A18、A19、D20、D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、C2、A3、D4、A22、1、C2、D3、B23、【推理关系】题干Whatdoestheunderlinedword“disgusting”mostprobablymean?☞文章内容notbad和disgusting是反义词☞B.选项unpleasant【名师点睛】猜测词义题之依据反义词和对比关系猜测词义依据反义词和对比关系猜测词义运用对比手法描述事物或现象是文章写作的一种常用的修辞手法。在这种修辞手段下，作者常借用一些信号词来提供相反信息，从而表明一个词与前面的另一个词互为反义。常用的信号词有：but/yet/however/nevertheless;while/butotherwise/orelse;unlike/instead/ratherthan;bycontrast/comparedto;onthecontrary/ontheotherhand等。1、D细节理解题。根据第二段最后一句“Theydonotneedsunlighttosurvive,iftheweatherbecomestoocold,theycanbecomeinactiveuntilconditionsimprove.”可知B是错误的。根据第三段可知这些菌类也移动但要靠风或其他的外力，自己不能，故A是错误的。根据第三段说菌类靠叶绿素来获得能量，故C是错误的。根据最后两段可知有些菌类不仅可用于制造药物，它还能给世界清洁，因此答案D符合题意，故选D。2、B推理判断题。本文主要讲述了地球上的真菌的种类，如何生存，对人类及环境的作用等知识。因此它属于生物学内容，有可能出现在生物书上，故选B。24、1、D2、B3、B4、C25、Anewstudysuggeststhatwashingdishesbyhandishealthierthanusingadishwasher.Nobodylikesdoingthedishes,butitturnsoutthatdoingthistaskmightpayoffinanunexpectedway.AccordingtoanewstudypublishedintheJournalofPediatrics,washingdishesbyhandinsteadofusingadishwashermightpreventthedevelopmentofallergies(过敏).ResearchersinSwedensurveyedtheparentsof1,029childrenaged7and8.Theydiscoveredthatchildrenwhosefamilieshand-washedthedishesinsteadofusingamachinewerelesslikelytohaveallergies.Earlierresearchhasshownthatdisheswashedbymachinearecleanerthanthosewashedbyhand.Sowhywouldkidswhoeatoffofslightlydirtierplatesbebetteroffwhenitcomestopreventingallergies?Oneexplanationisbasedonatheoryknownasthe“hygienehypothesis”,whichs