2023屆寧夏長慶高三月份第一次模擬考試英語試卷含解析

2023高考英語模擬試卷注意事項：1．答題前，考生先將自己的姓名、準(zhǔn)考證號填寫清楚，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．請按照題號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．—Iamsearchingoneonlineshoppingsiteafteranotherforacomputer.—So__________IbeforeIdecidedtobuyanewcamera.A．had B．have C．a(chǎn)m D．would2．—Iwillfixyourprinterrightnow.—Oh,________.I’minnohurry.A．takeyourtimeB．that’sagreatideaC．youarewelcomeD．I’dliketo3．Manydevelopingcountriesareunwillingtopursuetheireconomicdevelopment______destroyingtheenvironmentdespitetherebeingseveralfinancialcrises.A．a(chǎn)ttheriskof B．a(chǎn)tthecostof C．a(chǎn)ttheendof D．a(chǎn)tthemercyof4．—Wouldyoumindgivingyouradviceonhowtoimproveourbusinessmanagement?—Ifyoumake________mostoftheequipment,therewillbe________riseinproduction.A．the;a B．/;/ C．/;a D．the;/5．Althougheverythingseemstohavebeentakenintoconsideration,________accidentcanhappenwhentheastronautswalkin________space.A．/;the B．a(chǎn)n;the C．the;the D．a(chǎn)n;/6．TheTangDynastyisgenerallyregardedasagoldenchapterbypeopleworldwide,________theChinesecivilizationinfluencedmanyneighboringcountries.A．where B．whenC．which D．who7．I________________afluwhenIwasonaspringoutingwithmyclassmate.A．caughtup B．pickedupC．tookup D．broughtup8．---Mom,Ihavepassedtheadmissionexaminations!---______!A．GoodforyouB．GoodluckC．CheerupD．Goahead9．—Youwerenotlistening；whattroubledyou?—Imycomingmathexam．A．a(chǎn)mthinkingabout B．wasthinkingabout C．hadthoughtabout D．willthinkabout10．—Allthecontainershavebeenunloaded!CanithavebeendonebyFrank?—Impossible!He________hiscarlastnight.A．hasfixedB．hadfixedC．wouldfixD．wasfixing11．Whentheoldmanwokeup,hefoundsomeonehisTVinthelivingroom.A．stole B．steal C．stealing D．stolen12．Manywritersaredrawntobuildingaworld,_____readersaresomewhatfamiliarwithbutalsofeeldistantfromournormallives.A．it B．one C．that D．theone13．Herdoctorindicatedthatevenaddinga(n)_____amountofdailyexercisewoulddramaticallyimproveherhealth.A．modestB．equalC．considerableD．exact14．Itisnotsurprisingthatshewaselected______monitor;sheis______verysmartgirlwhohastheabilitytoorganizetheclasswell.A．/;the B．/;aC．a(chǎn);a D．the;/15．Theclassroomisbigenoughfor25studentsfornormaluseyouneedmorespaceforspecialactivities.A．once B．because C．if D．unless16．Sincethematchisover,wecan____bytravellingandstopthinkingaboutbasketball.A．diveinB．switchoffC．pulloutD．splitup17．Itwasthebelief________hecouldfindhis“root”inAfrica________madeAlexdecidetogotoGambia.A．that;where B．where;thatC．that;that D．how;which18．Thevillageevolvedintoamajore-commercecenter,and_____thepast,thevillagersowedtheirsuccesstothereformandopening-uppolicy.A．reviewedB．reviewingC．toreviewD．beingreviewed19．It’ssecondtimeinfivedaysthathehasaskedmeforhigherpay.A．不填；a B．a(chǎn);the C．the；a D．the；the20．That’s

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lightB．cometolifeC．comeacross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四個選項中，選出最佳選項。21．（6分）Thealarmsounds.Studentsswingtheirbackpackovertheirshoulder,boardtheschoolbus,maketheirwaytotheirhomeroomandthebellrings—schoolisback.ButformorehomesinAmerica,schoollooksmorelikestudentswakingup,makingtheirwaytothediningroomorhomeoffice,settinguplaptopsandlearninginthecomfortofhome.Virtual(虛擬的)schooling,describedas“apublicschoolthatoffersonlyinstructioninwhichstudentsandteachersareseparatedbytimeand/orplace,andinteractionoccursviacomputersand/ortelecommunications(電信)technologies”,hasincreasedoverthepastdecade.AccordingtotheNationalEducationPolicyCenter,enrollments(注冊人數(shù))invirtualschoolswas278,518betweenthe2015—2016schoolyearandthe2016—2017schoolyearincreasedby17,000.ForArizonaVirtualAcademy,afull-timeonlinepublicK-12school,theyuseK12Inc.curriculums.K12Inc.servesstudentsinall50statesandmorethan100countrieswithdigitallearningplatformsandtechnology,providingonlineeducation.“Wealwaysareimprovingourplatformsandthetechnologythatweusetomakesurethatwe’rekeepingupwiththechangingtrends,notonlywitheducationbutalsowithtechnology,”Dr.KellyVanSandesaid.Anotherpieceofnewtechnologythey’verolledoutisanewappwhereparentscanfindvirtualschoolsavailableintheirarea.CarrieFaulknerchosetoenrolltwoofherchildreninArizonaVirtualAcademy.Shesaysthey’vedoneschoolingonlineinChicago,inCalifornia,atrestaurantsandonhercousin’sfloorinKansas.“Itdoesn’tmatterwhetherhe(herson)isonthecouch,inhisbedoratthekitchentable,hecandoschoolingwhereverhewantsto,”Faulknersaid.“IwishtheyhaditformebackwhenIwasinschool.Thatwouldhavebeenawesome.”1、Whydoestheauthorcomparethetwokindsofschoolinginthefirstparagraph?A．Toattackrealschooling.B．Togiveanexampleofvirtualschooling.C．Tointroducethetopic“virtualschooling”.D．Todescribevividlystudents’goingtoschool.2、Howmanystudentsattendedvirtualschoolsduringthe2016—2017schoolyear?A．295,518 B．17,000. C．278,518. D．147,759.3、WhatcanweinferaboutArizonaVirtualAcademy?A．Theyprovidebothonlineandofflineeducation.B．They’reintendedforstudentsintheUnitedStates.C．Theirnewappletspeoplefindschoolsworldwide.D．Theirplatformsandtechnologyareveryadvanced.4、WhatisCarrieFaulkner’sattitudetovirtualschooling?A．Ambiguous. B．Cautious C．Supportive. D．Disapproving.22．（8分）WithmorelargesolarfarmsbeingdevelopedinthesunnysouthwesternUnitedStates,researchersandconservationistsalikearebeginningtonoticesurprisingenvironmentaleffects.Whilesolarenergyisknownforitspositiveenvironmentalimpacts,officialsattheNationalFishandWildlifeForensicsLaboratoryhavecometorecognizeoneofitssignificantdownsides:Somespecksofbirdsthatliveclosetolargesolarplants(太陽能板)aredyingoff,includingendangeredbirds.Arecentfederalinvestigationrecovered233birdsthathadbeenkilledasadirectresultofsolarplants.Researchersbelievethatsomeoftheaffectedbirdshavemistakenthelarge,reflectiveareasofthesolarpanelsforbodiesofwater.Thisisaphenomenonreferredtobyscientistsas“l(fā)akeeffect.”Thebirdsaredrawntowhattheyassumetobewater.Theyaimfortheareaandslamintothepanelswithgreatforce.Itisthoughtthattheinsectsthatbirdscatfallvictimto“l(fā)akeeffect”aswell,leadingthebirdsintothepanels.Researchersfigurethatbetween1,000and28,000birdsarekilledasaresultofharvestingsolarenergy.Thenumberofbirdsaffectedbywindfarmingismuchgreater,rangingfrom140,000to328,000.Coal-firedelectricityhasthelargestnegativeeffectonbirds,killingnearly8millionayear.Thesenumbersmakesolarfarmingseemlikethebestoption.However,conservationistsarequicktopointoutthatareaswheresolarisexpectedtoboombetween2015and2020arehometosomeoftherarestbirdsintheUnitedStates.Thiscouldputspecificbirdspeciesatriskofextinction.ThereexistsastateorderinCaliforniathat20percentofallelectricityofallenergysoldshouldberenewablebytheyear2017.Thishasbeenonedrivingforcebehindtherapiddevelopmentofhugesolarfarms.Theindustry,whichisexpectedtoboomasaresultofthischangetorenewableenergy,isfacingnewlyfiledlawsuits(起訴)byconservationistgroups.TheselawsuitscouldslowdowntheapprovalprocessfortheplannedsolardevelopmentacrosstheSouthwest.1、Whatcanweinferfromparagraph1?A．Solarfarmsrequirealongdevelopmentperiod.B．Mostpeoplewouldbeshockedbythesizeofsolarfarms.C．Solarenergyequipmentlooksstrangetomostpeople.D．Mostpeoplethinkthatsolarenergyisverybeneficial.2、Theunderlinedword“slam”inparagraph2isclosestinmeaningto.A．dashB．breakC．moveD．slide3、Whichofthefollowingbestreflectstheauthor’sviewpoint?A．Usingsolarfarmsisthemostpracticalwaytocreateenergy.B．Morebirdsareendangeredbysolarfarmsthanwindfarming.C．Solarfarmsmaynotbeasfriendlytotheenvironmentasexpected.D．Waysshouldbefoundtoreduce“l(fā)akeeffect”causedbysolarfarms.23．（8分）Haveyoueverlookedatafashionableitemofclothingandfeltconfused?Ifso,yourconfusionmayhavemadesense.Severalmonthsago,highfashionbrandBalenciagareleaseda“T-shirtshirt”,whichisashirtsewnonthefrontofaT-shirt.Theunusualdesignhascertainlyconfusedalotofpeople.Butthe“doubleshirt”isn’tfightingaloneonthefrontierofstrangefashion.EversinceUSshoemanufacturerCrocsreleaseditsfamoushole-filledfoamshoes,theso-called“uglyfashion”hasn’tshowedanysignsofslowingdown,theBusinessofFashionwebsitenoted.BritishdesignerPaulSurridgebelievesthattheriseofuglyfashionisasignthatpeopleareboredwithlookingperfectallthetime.“Fashionthrives(v.蓬勃發(fā)展)onnovelty”,hetoldtheFinancialTimes.Indeed,fashionisallaboutchanges.Somethingthat’sconsidereduncooloneminutecanthenturnouttobethelatestmust-havefashionitemthenext.AndintheeyesofUSfashionwriterMeganCollins,uglydoesn’tnecessarilymeanthedesignoftheitemisugly.Afterall,uglyissomethingsubjective.“Uglyfashionmeans‘notthemainstream’—itisnotwhateveryone’swearing;itisnotwhatthegeneralpopulationconsidersas‘in’rightnow,”shetoldstylenewssiteFashionista.Butthroughoutthehistoryoffashion,whenanynewtrendappears,mostpeopletendtohateit,beforeiteventuallybecomesloved.AsItaliandesignerMiucciaPradatoldTheNewYorkTimes,“Maybebecauseitisnewer,uglyisattractive.Uglyisexciting.”Meanwhile,popularsocialmediafashionbloggersalsohelppeopletopickupnewuglyfashiontrends.Thesebloggersexpressthemselvesthroughtheirclothes,showingtheiruniquepersonalitiesandmakingstatementswiththeirwardrobechoices.However,asClever-ishMagazinenoted,justbeingcomfortableinyourownskincouldactuallybe“thebestlook”.“Ipersonallylovehavingauniqueexpressionbecausewithoutuglyfashionanddiversity,we’dalllookthesame,”AustralianfashioninfluencerandmodelZanitaWhittingtontoldFashionista.“Iappreciateanythingthat’soutofthenorm(n.規(guī)范).”1、Theunderlinedword“in”inthepassagecouldbereplacedby____________.A．uglyB．fashionableC．a(chǎn)ffordableD．expensive2、Whatwillsomesocialmediafashionbloggersdotoshowtheirpersonalities?A．Theywilldressthemselvestolookperfect.B．Theywilltrysomenewandexcitingclothes.C．Theywillmakestatementswithothers’clotheschoices.D．Theywillexpressthemselvesbywearinguglyclothes.3、WhatcanweinferfromZanitaWhittington’swords?A．Sheisinfavorofuglyfashiontrends.B．Shedoesn’tcareaboutfashionatall.C．Shehopestobethesameasothers.D．Shewantstolookuglyasamodel.24．（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.25．（10分）ManyofusknowaboutRussia’sLakeBaikalfromourtextbooks,orbylisteningtoChinesesingerLiJian’shitsong,LieBaikal.Butoverthepastdecade,theworld’sdeepestfreshwaterlakehasbeeninthespotlightforanextremesport.EachMarchsince2005,about150peoplefromaroundtheworldsignupfortheBaikalIceMarathon.Theycometoexplorethelake’sbreathtakingbeautyandchallengethemselvesinunpredictableconditions.The26-mile(41.84-kilometers)journeystartsonthelake’seasternshore.InMarch,theiceisameterthickandiron-hard.Runnerscrossthisfrozensurface,finishingonthewesternsideofthelake.Knownasthe“blueeyeofSiberia”,LakeBaikalhasexceptionallyclearwaters.Thismeansitsiceisalmostperfectlytransparent(透明的).“Seenfromabove,arunnerontheicelooksasifheorshewerejoggingthroughspace.”TheNewYorkTimesnoted.Thelandscapemightbebeautiful,butit’salsoharsh.Strongwindsblast(侵襲)acrossthelakeandfrostbitecanoccurwithinhalfanhour.Runnerssaythecoldclimateiswhatdrawsthem.Theywanttotesttheirlimits.“Whenyouareinsuchanenvironment,youdon’thavecarsaroundyou,andyoudon’thavethenoisearound.Ithinktheseextremeracesallowyoutobealonewithnature.”AlicjaBarahona,a64-year-oldrunnerfromtheUS,toldABCnews.Thelocationofferssomestrangeanduniquecharacteristicsforthismarathon.Thefinishinglineisvisiblefromthestart,buttheendlesswhiteoffersnoprogressmarkers.Theracealsoendswithlittlefanfare(隆重的歡迎).Touristscrowdingtheicearemostlyaddictedtosnappingselfies(自拍)andjustignoretherunners.Forsomerunners,theabsenceofspectatorsmakestheracemorechallenging,becauseit’slonely.Theymustfightwiththemselves.“YouarealoneonBaikal.Itisyourrace.Youarealonewithyourself.Allyouneedtodoistodefeatyourself.”VeroniqueMessina,aFrenchrunner,toldtheTelegraph.1、WhatcanweknowabouttheBaikalIceMarathonfromthearticle?A．Ittakesrunnersfromthenorthernendtothesouthernendofthelake.B．Itinvolvesextremeweatherandbeautifulscenery.C．Itattractsmoreandmoreparticipantseachyear.D．Itisabout26kilometersinlength.2、HowdoestheBaikalIceMarathondifferfromothermarathons?A．Onlymenareallowedtoruninthisrace.B．Therunnersareoftendistractedbytourists.C．Therearemanyprogressmarkersontheice.D．Therunnerscanseethefinishinglinefromthestart.3、WhatisthemostchallengingpartoftheraceforMessina?A．Thecoldclimate. B．Thelongdistance.C．Noisysurroundings. D．Loneliness.4、Howmanyreasonsarelistedtoshowtheloneliness?A．5. B．4.C．3. D．2.第三部分語言知識運用（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四個選項中，選出可以填入空白處的最佳選項．26．（30分）In2000areportwaspublishedaboutwhattheearthmightbelike20yearsfromthenon.Thereportwasaresultofathree-year1Accordingtothereport,thepictureoftheearthintheyear2020isnota2one.Theworldwillbemore3becausethepopulationwillcontinuetogrow.Thepopulationcouldbe46900million,almost2450millionmorethanin1995.Morepeoplewouldmoveintocities,especiallycitiesin5countries.CitieslikeCairoandJakartaprobablywould6have15millionbythen.Foodproductionwill7,butnotenoughtofeedallthepeople.Farmerswillgrow90%morefoodthantheydidin1995,8mostoftheincreasewouldbeincountriesthat9produceenoughfoodfortheirpeople.Littleincreaseis10inSouthAsia,AfricaandtheMiddleEast.Poorfarmingwaysare11largeareasofcropland,changingfarmsintodeserts.Morefarmlandis12ascitiesbecomelargerandmorehousesarebuilt.13willgetworseasindustrialcountriesburnmorecoalandoil.Manyoftheworld’s14coulddisappearasmoreandmoretreesarecutdown.Energywillcontinuetobeaseriousproblem.Theexpertssaytheirpictureoftheearthfortheyear202015Theyonlycarriedoutthesituationthat16today.Bychangingthesituation,by17theproblems,thepicturecanbechanged.Thereis18timeforthenationsoftheworldtowork19aplanofaction.Buttheywarnedthat20toolongtomakedecisionswouldgreatlyreducethechancesofsuccess.1、A．learning B．project C．notice D．study2、A．pleased B．pleasant C．safe D．blue3、A．dangerous B．beautiful C．crowded D．terrible4、A．nomorethan B．a(chǎn)smanyas C．a(chǎn)smuchas D．a(chǎn)slargeas5、A．developing B．developed C．big D．mountainous6、A．none B．each C．a(chǎn)ll D．neither7、A．insist B．reduce C．increase D．continue8、A．so B．but C．or D．however9、A．a(chǎn)lready B．hardly C．partly D．never10、A．wanted B．lacked C．found D．expected11、A．destroying B．protecting C．disturbing D．interrupting12、A．saved B．lost C．discovered D．found13、A．Airpollution B．Waterpollution C．Somediseases D．Allfarmland14、A．a(chǎn)nimals B．plants C．forests D．people15、A．mustbetrue B．willcometrue C．can'tbetrue D．maybewrong16、A．happens B．develops C．exists D．a(chǎn)ppears17、A．settling B．workingout C．a(chǎn)nswering D．dealing18、A．no B．still C．less D．plentyof19、A．a(chǎn)bout B．in C．out D．for20、A．working B．suggesting C．spending D．waiting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個適當(dāng)?shù)膯卧~或括號內(nèi)單詞的正確形式。27．（15分）Thesilentkiller—airpollutioncausessevenmillionpremature(過早的)1．(death)ayear,notjustin2．(develop)countriesbutalsoinUKandtheUSAaswell.InChina，peoplearewellawareofthehealthproblemsitbrings.Icheckeveryparteveryday.Ifithasheavyairpollution,Iwillpreparemasksformyfamily.Idislike3．whentheairisbad.BecausebadairmakesitdifficultformetobreatheandIthinkitdoesinfluencemy4．(perform)atwork.Anewresearchinchinahasalsofoundalinkbetweenairqualityandlevelsofintelligence.Inthestudy,25,000peoplelivingacrossChina5．(test)inlanguageandmathskillslastyear.Theyfoundtheresultsofthose6．livedinmorepollutedareaswere7．(negative)impacted,especiallyinlanguages.Itaddstoagrowingbodyofevidencethatairpollutionhasaneffectnotjustonthelungsandheart8．onthebrain.Thisresearchshowsthatthelongerweareexposedtoairpollution,the9．(many)problemswe’restoringupforlaterlife.CampaignershopethisstudywillpersuadetheBritishgovernment10．(think)hardbeforeitpublishesitscleanairstrategynextyear.第四部分寫作（共兩節(jié)）第一節(jié)短文改錯（滿分10分）28．（10分）短文改錯DearRon，Iamveryexcitingtohearthatyouarecomingtoourschoolsoon．Nowletmetointroduceourschooltoyou．Ourschoolisaveryfamouslyschoolwithlonghistory．Wehavemanyexperiencedteachersandexcellentequipments．Therearetwoteachingbuildings；oneisforseniorsandtheothersisforjuniors．Therearetwolabbuildingsoralibrary．ExceptChinese，maths，English，physicsandchemistry，wehavesomeoptionalcourses．Thestudentscanchoosethattheyliketoattend．Weloveourschool．Iamlookingforwardtomeetyousoon．Yourssincerely，LiHua36第二節(jié)書面表達(dá)（滿分25分）29．（25分）假定你是李華，最近你得知你的美國朋友Peter因漢語考試沒有及格而感到很沮喪。請你給他寫封郵件，內(nèi)容包括：1.給予安慰；2.給予鼓勵;3.愿意提供幫助；注意：1.詞數(shù)100左右；2.可以適當(dāng)增加細(xì)節(jié)，以使行文連貫。DearPeter,______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________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、A2、A3、B4、A5、D6、B7、B8、A9、B10、D11、C12、B13、A14、B15、D16、B17、C18、B19、C20、A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四個選項中，選出最佳選項。21、1、C2、A3、D4、C22、1、D2、A3、C23、1、B2、D3、A24、Anewstudysuggeststhatwashingdishesbyhandishealthierthanusingadishwasher.Nobodylikesdoingthedishes,butitturnsoutthatdoingthistaskmightpayoffinanunexpectedway.AccordingtoanewstudypublishedintheJournalofPediatrics,washingdishesbyhandinsteadofusingadishwashermightpreventthedevelopmentofallergies(過敏).ResearchersinSwedensurveyedtheparentsof1,029childrenaged7and8.Theydiscoveredthatchildrenwhosefamilieshand-washedthedishesinsteadofusingamachinewerelesslikelytohaveallergies.Earlierresearchhasshownthatdisheswashedbymachinearecleanerthanthosewashedbyhand.Sowhywouldkidswhoeatoffofslightlydirtierplatesbebetteroffwhenitcomestopreventingallergies?Oneexplanationisbasedonatheoryknownasthe“hygienehypothesis”,whichsaysthere