2026届天津市第100中学高三上英语期末达标检测模拟试题含解析

2026届天津市第100中学高三上英语期末达标检测模拟试题注意事项1．考生要认真填写考场号和座位序号。2．试题所有答案必须填涂或书写在答题卡上，在试卷上作答无效。第一部分必须用2B铅笔作答；第二部分必须用黑色字迹的签字笔作答。3．考试结束后，考生须将试卷和答题卡放在桌面上，待监考员收回。第一部分（共20小题，每小题1.5分，满分30分）1．Thepeopleinthevillageareso________thattheyarewillingtohelpeveryvisitor.A．optimistic B．energeticC．enthusiastic D．ambitious2．Whenfacedwithabigchallenge________potentialfailureseemstohideateverycorner,maybeyou'veheardthisadvicebefore:“Bemoreconfident.”A．where B．whose C．which D．ofwhich3．—DidMaxgototheconcertwithhisfamilyyesterday?—Thereportscheduledtobehandedintomorrow,he_______it.A．couldn’thaveattended B．needn’thaveattendedC．wouldn’tattend D．shouldn’tattend4．Whatmadethemmissthedeadlinewasnottheirlackoffunding,but________theirlackofplanning.A．even B．stillC．rather D．ever5．IwouldnotbeseeingthefilmGreenBooknow_____meupintime.A．wereKathynottopick B．hadKathynotpickedC．ifKathyhasn’tpicked D．ifKathydidnotpick6．Asisoftenthecase,therearealwayssomeobstaclesintheway，something________beforewerealizetherealgoalofeducation.A．tobegotthrough B．gotthroughC．gettingthrough D．havingbeengotthrough7．Ithinkthatthisisthebestmobilephoneavailableintheworld.Nootheronecan________it.A．compare B．match C．produce D．win8．Maybeitistimefortherestofsocietyto_________thefact_________Imaynotbeabletowalk,therearemanyothergreatthingsIcando.A．adjustto;thatB．getusedto;thatwhileC．adaptto;whileD．goabout;thatwhile9．Thefolksweredelightedatthemessageoftheirrelatives_______thatmineexplosion.A．survived B．tosurvive C．weresurviving D．surviving10．Whilewatchingtelevision,____.A．thedoorbellrang B．weheardthedoorbellringC．therewassomeoneknockingatthedoor D．thedoorbellwasringing11．—Whataboutgoingabroadforfurtherstudy?—Great,butIneverexpected______achanceformebefore.A．theretobeB．therebeingC．ittobeD．itbeing12．Thenewscameasnosurprisetome.I______forsometimethatthefactorywasgoingtoshutdown.A．hadknown B．knewC．haveknown D．know13．I’veknownSarahfornearlytenyears.She_________oncemycustomer.A．is B．hasbeenC．was D．hadbeen14．Theinfluenceofthisbookmightnothavebeenreachingsofar,________forMr.William,whodaredtopublishit.A.ifhaditnotbeen B．isitnotbeing C．haditnotbeen D.itsonlyhavingbeen15．Everythingseemedtobegoing________forthefirsttwodaysafterIarrivedinNewYork.A．vividly B．generally C．frequently D．smoothly16．—Youlooksleepytoday.—__________nottomisstheflight,Ididn'tdaretoclosemyeyesthewholenight.A．Reminded B．BeingremindedC．Reminding D．Havingreminded17．I____aboutwhatyou’vesaidandI’vedecidedtotakeyouradvice．A．thoughtB．havebeenthinkingC．wasthinkingD．wasthinking18．AnewairportmaybeconstructedinNantong,____thepaceofeconomicgrowthwillbeaccelerated.A．inwhichcase B．inthatcase C．inwhatcase D．inwhosecase19．Thefarmersareinbadneedofrain,buta(an)largeamountofrainfallwillcauseFloods.A．Eventually B．constantly C．gradually D．extremely20．—Whereareyougoingtohangthepicture?—Ihaven’tdecidedyet.I________hangitinthediningroom.A．might B．mustC．need D．would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）YoumayhaveneverheardofLanthanum,CeriumorNeodymium,buttheseelements(元素)andothersknownas“rareearth”playamajorroleinmoderntechnology.Theycanactuallybefoundinmanyplacesontheearth,butnotinquantitiesthatcanbemined.Onlyafewcountries—China,America,India,Australia,BrazilandMalaysiahaveanythatcanbeminedenoughtobetraded.EventhoughsomeoftheseelementssuchasCeriumareasabundantasCopper,theyarenotfoundinconcentratedamountsontheearth’ssurface.Theyareoftenmixedtogetherwithothermetals,whichmakesextraction(提取)oftheseelementsanexpensiveandanenvironmentallymessyprocess.Itwasduetothisreasonthattheterm“rareearth”wasinvented.Rareearthmetalsareusedwidelyinourlife.Rechargeablecarbatteries,computers,iPhones,DVDplayers,computermonitors,televisions,lighting,lasers,glasspolishing,andsuperconductorsallusequantitiesofrareearthmetals.Also,withtheadvancementin“green”technologylikesolarpanels,theseshinymaterialsarebecomingmoreimportantthanever.Anaverageelectriccaruses10poundsofLanthanumforitsrechargeablebattery!Americahaslargedeposits(存储量)ofrareearthsandhasoneofthefirstmines.ItwasopenedinSouthernCaliforniain1940.Theelement“Europium”wasthefirstmetaltobeseparatedinquantityforuseincolortelevisions.However,inthe1980’sand1990’s,asChinastartedproducingtheseelementsinInnerMongolia,theminesinAmericaandelsewherecouldnotkeeppace.ThemineinMountainPass,Californiaalsofailedenvironmentalregulationsandshutdownin2002.Now,recognizingtheimportanceofhavingmorethanonesupplierofthisimportantresource,otherrareearthowningcountrieslikeIndiaandAustraliaareeitherdustingofftheirrareearthminesorspeedinguptheirproduction.Itisbelievedthatthedebateoverrareearthswillbecomelouderinthecomingmonthsandyears.1、Whatcanwelearnaboutrareearths?A．TheyareactuallyasabundantasCopper.B．Theycanbeminedeasilyasothermetals.C．Theycanonlybefoundinafewcountries.D．Theyarenotreallyasrareastheyarenamed.2、ComparedwithChina,America.A．paidmoreattentiontoEuropiumB．haslargerdepositsofrareearthsC．startedproducingrareearthsearlierD．hasmorerareearthmines3、Itcanbeinferredfromthetextthatrareearths.A．arenowingreatdemandB．cannowbeusedinfewfieldsC．areharmfultotheenvironmentD．willsoonbereplacedbyothermetals22．（8分）Decadesbeforethefirstunaccompaniedchildwasputonaplanetograndma’sinthecareofaflightattendant,afewresourcefulparentsaccomplishedthesameendbysimplydroppingtheirkidsinthemail.Thiswasintheearliestdaysoftheparcelpostservice,whichlaunchedin1913.Beforethat,U.S.PostalServicepackageswerecappedatfourpounds,whichlimitedthegoofythingspeopletriedtosendbypost.Butwhentheparcelservicebegan,allkindsofcargoshowedupinthemailstream,includingcoffins,eggs,dogsand,inafewcases,humanyoung.AccordingtoNationalPostalMuseumhistorianNancyPope,thefirstknowncaseofamailedbabywasin1913whenMr.andMrs.JesseBeaugeofGlenEste,Ohio,shippedtheir10-poundinfantsontohisgrandmother’shomeaboutamileaway,paying15centsinpostageandspringingfor$50ininsurance(becausetheywereworriers).Butsomechildrenweremailedmuchfarther,Popesaid.EdnaNeffofPensacola,Fla.,was6whenshewaspackedoff—orpackagedoff—toherfather’shomeinChristiansburg,Va.,720milesaway.Thepreciousparcelsweren’ttrulyparcelsinthebrown-paper.Insteadtheyweremorelikecompanionsinthearmsoftheircarriersorwalkedalongtheroute(路线).Butthemostfamousmailedchild,MayPierstorff,wasindeedsentbyanIdahorailwaymailcarin1914withtheappropriatestampsstucktohertravelingcoat.May’spicturesurvives,butnophysicalevidenceofhertrip.“Wewouldsurelovetohavethatcoat,”Popesaid.In1914,thepostmastergeneralinstitutedaruleaboutthemailthatstandstothisday:nohumans.Butthatdidn’tstopanambitiousthieffromcratinghimselfupandshippinghimselfairmail.WhenWilliamDeLucia,packedinatrunklabeled“MusicalInstruments”alongwithfoodandanoxygentank,wasairborne,heclimbedout,pilferedthousandsofdollars’worthofgoodsfromtheregisteredmailandsealedhimselfbackup.HewasarrestedattheAtlantaairportin1980afterhistrunkpoppedopenasitwasbeingunloaded.“Wehavehisoxygentank”atthePostalMuseum,Popenotedwithpride.1、WhatdidU.SPostalServiceputalimittobefore1913?A．Thevalueofthemail.B．Theweightofparcels.C．Thecontentinthemail.D．Thepostageforpackages.2、HowwasJesseBeauge’ssonmailed?A．Packedinamailbox.B．Walkedalongtheroute.C．Sentbyarailwaymailcar.D．Carriedinthearmsofthepostman.3、WhatdoesNancyPopewishtobeexhibitedmostinthePostalMuseum?A．May’spicture.B．Thebrown-paper.C．May’stravelingcoat.D．Idahorailwaymailcar.4、WhodiscoveredWilliamDeLuciaatlast?A．Theairportporter.B．Theairportpolice.C．Thepassengervictims.D．Thepostmastergeneral.23．（8分）Animallovershavelongsuspectedthatplayingwithpupswasgoodforthesoul,andnowsciencehasconfirmedit–forstudentsinparticular.TheresultsofanewstudydonebyresearchersattheUniversityofBritishColumbiaconcludedthatthecollegestudentswhospenttimeatdrop-indogtherapysessionsexperiencedanincreaseinfeelingsofwellnessandareductioninoverallstress.Thestudy,asreportedbyScienceDaily,indicatesthatplayingwithpupsisnotonlypopularwiththestudents,it’salsobeneficialtotheirhealth.Thisfindingwasseenacrossgender（性别）.Thestudy,whichpublishedonMarch12inthejournalStressandHealth,involved246studentswhoweresurveyedbeforeandaftertheydroppedbydogtherapysessions.Theyoungparticipantsweregivenfreeaccesstopet,hugwithandtalktosevento12therapydogs.Additionally,theyfilledoutquestionnairesrightbeforeandrightafterhangingwiththedogs,aswellas10hourslater.Accordingtoresearchers,theseyoungadultsreportedanotableincreaseinhappiness,asignificantreductioninstressandafloodofenergyrightaftertheirsessionswiththepups.Althoughthereportedfeelingsofhappinessandsatisfactionweren’tlong-lasting,researcherssayothereffectshaveclear,positiveadvantages.“Thesesessionsclearlyprovidebenefitsforstudentsintheshort-term,sowethinkuniversitiesshouldtrytoschedulethemduringparticularlystressfultimes,suchasaroundexamperiods,”AssistantProfessorofPsychologyatUBCandthestudy’sseniorauthor,FrancesChentoldScienceDaily.“Evenhavingtherapydogsaroundwhilestudentsareworkingontheirout-of-classassignmentscouldbehelpful.”1、（小题1）Whatdoesthenewstudysayaboutthepups?A．Theyareonlygoodforcollegestudents.B．Theyareonlybeneficialtothestudents’physicalhealth.C．Theycanincreasehappinessandsatisfaction.D．Theycancreatepositivefeelingsthatlastverylong.2、（小题2）Whatdoestheauthorofstudyadviseuniversitiestodo?A．Allowtheirstudentstohavetherapydogstoavoidacutestress.B．Allowtheirstudentstohavetherapydogsaroundduringeachexam.C．Allowtheirstudentstohavetherapydogsaroundduringtheirclass.D．Allowtheirstudentstohavetherapydogstoachievegoodgrades.3、（小题3）WhatcanweinferfromParagraph2?A．Collegestudentsliketoplaywithpups.B．Dogtherapysessionsarepopularamongcollegestudents.C．Peopleespeciallycollegestudentsareundergreatpressure.D．Playingwithpupsbenefitsmalesandfemalesmentally.4、（小题4）Whatmaybethebesttitleforthetext?A．Pups,bestfriendsofhumans.B．Pups,therapiesforstudents.C．AnimalloversandpupsD．Petskeepingandthesoul24．（8分）Nearly19percentofteachersofcolor(有色人种教师)lefttheirjobsafterthe2014-2015schoolyear.Someleftforpersonalreasonsliketakingcareoftheirfamilies.But50percentsaidtheyleftbecausetheyweredissatisfiedwiththeiremploymentsituation,suchaspoorworkingconditions,studentdisciplineproblemsandlargeclasssizes.Thus,takingimmediatemeasurestoimproveitisourtoppriority.Foryears,researchershaveprovedthebenefitsofincreasingtheshareofminorityteachersinschools,especiallyasourpublicschoolsystemhasturnedtoonethatismadeupmostlyofminoritystudents.Teachersofcolor,whoaremorelikelythantheirwhitecounterpartstochoosetoworkinraciallydiverse(多种多样的)schools,offerparticularbenefitstotheirstudents.Graduationratesincreaseamongminoritystudentswhentheyaretaughtbyraciallysimilareducators,researchshows.Theycanalsoserveaspositiverolemodels,andtheirpresencereducesthechanceofracialdiscriminationatschool.TheShankerInstitutereportsuggeststhattherateofminorityteacherhiringisnotthewholeproblem.Theproblemiswhathappensaftertheseteachersentertheclassroom.Theseteachersoftenworkinhigh-povertyruralschools.Theyaremorelikelytohaveless-desirableworkingconditions.Diversityisakeycomponenttoequalityandopportunity.Wherethere’sadiverseteachingworkforce,allkidsthrive.Sosolutionsmustbefoundatoncetoturnthistrendaround.Firstly,schoolsshoulddevelopmentorshipprogramsthatsupportminorityteachersoncetheyareintheclassroom.Secondly,moremoneyshouldbespentinimprovingworkingconditionsintheseschools.Ofcourse,schoolheadmastersshouldalsobeevaluatedontheirabilitytoretainteachersofcolor.1、Amongteachersofcolorleavingtheirjobs,halfofthemquitbecause.A．theyhadtotakecareoftheirchildrenB．theyhadtomovetootherplacesC．theyeventuallyfoundbetter-paidjobsD．theiremploymentsituationwasunsatisfactory2、Whichofthefollowingisthemainideaofthesecondparagraph?A．Thesolutionstoincreasinggraduationratesamongminoritystudents.B．Thebenefitsofincreasingtheshareofminorityteachersinschools.C．Thereasonsforteachersofcolorleavingtheirjobsinmanyschools.D．Thewaystodecreasethepossibilityofracialdiscriminationatschool.3、Howdidtheauthorfeelwhenwritingthepassage?A．Hefeltangryaboutthegovernment.B．Hewassatisfiedwiththepresentsituation.C．Hefeltiturgenttosolvetheproblem.D．Hedidn’tcareaboutdiverseteachingworkforce.25．（10分）It’snearlyexamtime,socheckoutsomeofthebestfreeappsaroundtohelpyoumanagethestressofexamsandensureyouarestudyingeffectivelyoverthecomingweeks.ExamCountdownThisappcanhelptoremindyouhowmanydays,hours,andminutesyouhaveuntilyourexam.Thiscanhelptomotivateyoutohitthebooksbeforeit’stoolate.BlockTheInternetAreyouconstantlycheckingFacebookwhenyoushouldbewritinganessay?OrperhapsareyoudistractedbyabattleinLeagueofLegends?DownloadthisapptogetridofonlinedistractionsbytemporarilyblockingInternetsitesonyourmobile.Simplyaddthewebsitesyouwanttoblockandtheperiodoftimetoblockthemfor.Guaranteetogetyourselffocusedonthatassignment.CBT-iCoachTheUSDepartmentofVeterans(老兵)Affairsdevelopedtheapp,CBT-iCoach,toassistwithinsomnia(失眠)andhelppeoplewhowouldliketoimprovetheirsleepinghabits.Itprovidesseveralkeyparts:informationaboutsleepandinsomnia,strategiesforimprovingsleep,relaxationskillsandahelpfulsleepdiary.YogaYogahasgreathealthbenefitsbothforthemindandbody,andwillhelpyoutoperformatyourbestwhileatuniversity.Downloadayogaappandhaveyourownpersonalyogainstructorinyourlivingroom.Youcanchoosefromshortorlongworkoutsandhaveaqualifiedinstructorteachingyouhowtodoeachpose.Choosefromavarietyofyogaroutinesandwatchtheinstructionalvideos.Goon,stretchoutthosesoremuscles.1、Ifyouarenotgoodatmanagingyourtimebeforeanexam,youcouldtry________.A．BlockTheInternetB．ExamCountdownC．CBT-iCoachD．Yoga2、Whichappisthemostusefulforastudentaddictedtovideogames?A．Yoga.B．CBT-iCoach.C．ExamCountdown.D．BlockTheInternet.3、WhatdoweknowaboutCBT-iCoachfromthisarticle?A．Ithelpstobuildupstrongermuscles.B．Ithelpsstudentstomanagetheirstudytime.C．Itmonitorsandimprovespeople’ssleepingquality.D．Itisusedtotreatsoldierswithsleepingdifficulties.4、WhenusingtheYogaapp,thestudentsareexpectedto________.A．askapersonalYogacoachtoinstructthemfacetofaceB．choosesomeshortworkoutstoavoidbeingsotiredC．choosesomelongworkoutstoguaranteethetrainingeffectD．followtheinstructionalvideostostretchoutthemuscles5、Whatdoestheauthormainlyintendtotellusinthispassage?A．Someappstohelpstudentsbetterprepareforexams.B．Theinfluenceofourstudyhabitsonourexamresults.C．Severaltipsonhowtothrowoffanxietybeforeexams.D．Detailsofsomeappstohelptoimprovelearningskills.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）Onourfirstanniversary,JackboughtabottleofCasaque,anexpensivecologne(古龙香水)forme.“Weagreedtosavethemoneyforyourpostgraduateeducation，”Isaidsomewhathalf­heartedlyasItookitoutfromabeautifully­wrappedpacket.“Iamunablenottogivesomething1totheworld'smostbeautifulbride,honey！”Iheldittomy2，andsmelledthemostpleasantflavorIcouldever3.Lookingdownatmy4bluejeansandugly,raggedtennisshoes,IwonderedifIcouldeverbeworthyofit.ButIwould5.Iusedonlyalittleofiteverytime6Jackgraduatedandourlifewasfinanciallyeasier.It'sa7ofthefoolishloveofayounghusband.Thenonedaythree­year­oldJimwassittingonthefloor8theemptycolognebottle.Hislipswet,hewasmakinga(n)9face.Hedrankmy10cologne！“Jack,comequick.”Icried，“Cancologne11mybaby?Jimdranktherestofit！”“It'smostlyjustalcohol,honey，”Jack12me.LittleJimwasfine,andmyconcernformychildwas13.Inowfelt14toseetheemptycolognebottle.Afewweekslater,Jackboughtanotherbottleofmybelovedcologne.I15itasmuchasIhaddonetotheearlierone.16，itbecamethree­quartersempty.Ithoughtitbesttobuyanother17.Buttheshopassistanttoldmethattherewasn'tevenamakerofthatbrandanymore.NowIonlyusemyspecialcologneonveryimportantoccasions,becausetherewillbe18toreplaceitwhentheselastfewprecious19aregone.Butfromthebottomofmyheart,it'snotthree­quartersemptybutstillone­quarterfull.PerhapsifI'mverycareful,Ican20usingitfortherestofmylife.1、A．specialB．terribleC．practicalD．cheap2、A．eyeB．noseC．handD．mouth3、A．imagineB．affordC．touchD．describe4、A．clumsyB．uniqueC．fadedD．stylish5、A．tryB．actC．insistD．withdraw6、A．unlessB．evenifC．untilD．evenafter7、A．costB．consequenceC．standardD．symbol8、A．lookingforB．holdingC．reachingforD．filling9、A．amusedB．excitedC．awfulD．happy10、A．poisonousB．preciousC．dangerousD．magical11、A．hurtB．attractC．frightenD．please12、A．criticizedB．encouragedC．educatedD．comforted13、A．increasedB．relievedC．confirmedD．developed14、A．gratefulB．nervousC．heartbrokenD．desperate15、A．resistedB．wastedC．protectedD．prized16、A．StillB．SoC．OtherwiseD．Therefore17、A．brandB．bottleC．flavorD．color18、A．someB．noneC．anotherD．more19、A．quartersB．packetsC．dropsD．shops20、A．turntoB．devotetoC．countonD．decideon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）Oneofthepurposesofchildren'sslang(俚语)1．(be)tostopadultsfrombeingabletounderstandwhatthey’resaying.Obviously,thestrategyworks.Recentresearchshowsthat2．majorityofadultscan’ttranslatethemeaningofcommonslang.Inasurveyof4,5000peoplelastmonth,3．wasfoundthat85percentofadultsdidn’tunderstandthetranslationsofemoji(表情符号)andtext.Theresearcherswarnedthatalackof4．(aware)ofwhatchildrenarecommunicatingonlinecanleavethemunprotected,withphrasesthatexpresseatingdisordersandunhappinessnot5．(understand).Foryoungpeoplegrowingupwithtechnology,thisnewlanguagecomes6．(natural),butit’sleavingsomeadultsunsureabout7．isbeingsaidbytheirchildrenonline.It’simportantforadultstospeaktoyoungpeopleabouthowtheyusesocialmediaandchatonline.CarolineBunting,generalmanageratInternetmatters,said＂Whileitisunrealistictoexpectparents8．(know)everypieceofInternetslangtheirchildrenwilleversee,onlinesafetystarts9．aconversation.It’svitalforparentstotalktotheirkidsabouttheirdigitalworlds,includingall10．(sort)ofthingstheymightexperienceonlineandthetypesofproblemstobeawareof.＂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。DearRalph,I'maseniorstudent、Ihavebeinlovewithaboyforthreeyears、Butheisashyboy,soIwrotehimaletterfirstlytoexpressmyfeeling、Andhewroteback、Inhisletterhesaid,“Wearestudents、Ourtaskisstudy、Letuswaittoseeuntilwehaveanychanceaftergraduation、”SoaftergraduationItelephonedtohim,askinghimaboutgoout、Buthesaidhedidn'twantto、HejustwantedtosleepandwatchedTV、HowdoyouthinkIshoulddo?DoyouthinkIshouldcontinuetolovehimandgiveup、第二节书面表达（满分25分）29．（25分）阅读下面短文，然后用60个单词左右概括短文的要点。Gettingridofdirt,intheopinionofmostpeople,isagoodthing.However,thereisnothingfixedaboutattitudestodirt.Intheearly16thcentury,peoplethoughtthatdirtontheskinwasameanstoblockoutdisease,asmedicalopinionhaditthatwashingoffdirtwithhotwatercouldopenuptheskinandletillsin.Aparticulardangerwasthoughttolieinpublicbaths.By1538,theFrenchkinghadclosedthebathhousesinhiskingdom.SodidthekingofEnglandin1546.ThusbeganalongtimewhentherichandthepoorinEuropelivedwithdirtinafriendlyway.HenryIV,KingofFrance,wasfamouslydirty.Uponlearningthatanoblemanhadtakenabath,thekingorderedthat,toavoidtheattackofdisease,thenoblemanshouldnotgoout.Thoughthebeliefintheadvantageofdirtwaslong-lived,dirthasnolongerbeenregardedasaniceneighboreversincethe18thcentury.Scientificallyspeaking,cleaningawaydirtisgoodtohealth.Cleanwatersupplyandhandwashingarepracticalmeansofpreventingdisease.Yet,itseemsthatstandardsofcleanlinesshavemovedbeyondsciencesinceWorldWarⅡ.Advertisementsrepeatedlyselltheidea;clothesneedtobewhiterthanwhite,clothseversofter,surfacestoshine.Hasthehatefordirt,however,gonetoofar?Attitudestodirtstilldifferhugelynowadays.Manyfirst-timeparentsnervouslytrytowarntheirchildrenofftouchingdirt,whichmightberesponsibleforthespreadofdisease.Onthecontrary,MaryRuebush,anAmericanimmunologist(免疫学家),encourageschildrentoplayinthedirttobuildupastrongimmunesystem.Andthelatterpositionisgainingsomereason.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________