历年托福考试阅读真题汇总含答案

历年托福考试阅读真题汇总含答案历年托福考试阅读真题汇总含答案历年托福考试阅读真题汇总含答案xxx公司历年托福考试阅读真题汇总含答案文件编号：文件日期：修订次数：第1.0次更改批准审核制定方案设计，管理制度0308托福试题阅读（55minutes）Question1-11Iffoodisallowedtostandforsometime,itputrefies.Whentheputrefiedmaterialisexaminedmicroscopically,itisfoundtobeteemingwithbacteria.Wheredothesebacteriacomefrom,sincetheyarenotseeninfreshfood

Evenuntilthemid-nineteenth

century,manypeoplebelievedthatsuchmicroorganismsoriginatedbyspontaneous(5)generation,ahypotheticalprocessbywhichlivingorganismsdevelopfromnonlivingmatter.ThemostpowerfulopponentofthetheoryofspontaneousgenerationwastheFrenchchemistandmicrobiologistLouisPasteur(1822-1895).Pasteurshowedthatstructurespresentinaircloselyresemblethemicroorganismsseeninputrefyingmaterials.Hedid(10)thisbypassingairthroughguncottonfilters,thefibersofwhichstopsolidparticles.Aftertheguncottonwasdissolvedinamixtureofalcoholandether,theparticlesthatithadtrappedfelltothebottomoftheliquidandwereexaminedonamicroscopeslide.Pasteurfoundthatinordinaryairtheseexistsavarietyofsolidstructuresranginginsizefrom0.01mmtomorethan1.0mm.Manyofthesebodiesresembledthereproductive(15)structuresofcommonmolds,single-celledanimals,andvariousothermicrobialcells.Asmanyas20to30ofthemwerefoundinfifteenlitersofordinaryair,andtheycouldnotbedistinguishedfromtheorganismsfoundinmuchlargernumbersinputrefyingmaterials.Pasteurconcludedthattheorganismsfoundinputrefyingmaterialsoriginatedfromtheorganizedbodiespresentintheair.Hepostulatedthatthesebodiesareconstantly(20)beingdepositedonallobjects.Pasteurshowedthatifanutrientsolutionwassealedinaglassflaskandheatedtoboilingtodestroyallthelivingorganismscontaminatingit,itneverputrefied.Theproponentsofspontaneousgenerationdeclaredthatfreshairwasnecessaryforspontaneousgenerationandthattheairinsidethesealedflaskwasaffectedinsomeway(25)byheatingsothatitwouldnolongersupportspontaneousgeneration.Pasteurconstructedaswan-neckedflaskinwhichputrefyingmaterialscouldheheatedtoboiling,butaircouldreenter.Thebendsintheneckpreventedmicroorganismsfromgettingintheflask..Materialsterilizedinsuchaflaskdidnotputrefy.1,Whatdoesthepassagemainlydiscuss?(a)Pasteur’sinfluenceonthedevelopmentofthemicroscope.(b)Theoriginofthetheoryofspontaneousgeneration.(c)Theeffectsofpasteurizationonfood.(d)Pasteur’sargumentagainstthetheoryofspontaneousgeneration.2,Thephrase“teemingwith”inline2isclosestinmeaningto(a)fullof(b)developinginto(c)resistantto(d)hurtby3,Whichofthefollowingquestionsdidthetheoryofspontaneousgenerationattempttoanswer?(a)Whatistheoriginofthelivingorganismsareseenonsomefood?(b)Howmanytypesoforganismscanbefoundonfood?(c)Whatisthemosteffectivewaytopreparelivingorganismsformicroscopicexamination?(d)Howlongcanfoodstandbeforeitputrefies?4,Theword“resemble”inline9isclosestinmeaningto(a)benefitfrom(b)appearsimilarto(c)jointogetherwith(d)growfrom5,Thepurposeofthe“guncotton”mentionedinparagraph2wasto(a)trapparticlesforanalysis(b)slowtheprocessofputrefaction(c)increasetheairflowtothemicroscopicslide(d)aidthemixingofalcoholandether6,Theauthormention“1.0mm”inline14indescribingthe(a)thicknessofalayeroforganismsthatwasdepositedonanobject(b)diameterofthefibersthatwereintheguncottonfilters(c)thicknessofthemicroscopeslidesthatwereused(d)sizeoftheparticlesthatthatwerecollected7.Theword“postulated”inline19isclosestinmeaningto(a)analyzed(b)doubted(c)persuaded(d)suggested8.TheobjectsthatPasteutremovedfromtheairinhisexperimentwereremarkablebecausetheywere(a)primarilysingle-celledorganisms(b)nodifferentfromobjectsfoundinputrefyingmaterials(c)fairlyrare(d)abletoliveinamixtureofalcoholandether9.Theword“it”inline22refersto(a)anutrientsolution(b)aglassflask(c)boiling(d)spontaneousgeneration10.Accordingtoparagraph3,proponentsofspontaneousgenerationbelievedthatwhichofthefollowingwasimportantfortheprocesstosucceed(a)Asealedcontainer(b)Freshair(c)Heat(d)Thepresenceofnutrients11.Itcanbeinferredfromparagraph3thatPasteuremployedaswam-neckedflaskto(a)storesterilizedliquidsforuseinfutureexperiments(b)preventheatfrombuildingupinasolution(c)disproveacriticismofhisconclusions(d)estimatethenumberoforganismsinaliterofairQuestions12-20IntheearlydecadesoftheUnitedStates,theagrarianmovementpromotedthefarmerassociety’shero.Inthemindsofagrarianthinkersandwriters,thefarmerwasapersononwhosewell-beingthehealthofthenewcountrydepended.TheperiodbetweentheRevolution,whichendedin1783,andtheCivilWar,whichendedin1865,wastheageof(5)thefarmerintheUnitedStates.Agrarianphilosophers,representedmosteloquentlybyThomasJefferson,celebratedfarmersextravagantlyfortheirsupposedcentralityinagoodsociety,theirpoliticalvirtue,andtheirSuperiormorality.Andvirtuallyallpolicymakers,whethertheysubscribedtothetenetsofthephilosophyheldbyJeffersonornot,recognizedagricultureasthekeycomponentoftheAmericaneconomy.Consequently,governmentat(10)alllevelsworkedtoencouragefarmersasasocialgroupandagricultureaseconomicenterprise.Boththenationalandstategovernmentsdevelopedtransportationinfrastructure,buildingcanals,roads,bridges,andrailroads,deepeningharbors,andremovingobstructionsfromnavigablestreams.Thenationalgovernmentimportedplantandanimalvarietiesand(15)launchedexploringexpeditionsintoprospectivefarmlandsintheWest.Inaddition,governmenttradepoliciesfacilitatedtheexportingofagriculturalproducts.Fortheirpart,farmersseemedtomeetthesocialexpectationsagrarianphilosophershadforthem,astheirbroaderhorizonsandgreaterself-respect,bothproductsoftheRevolution,werereflectedtosomedegreeintheirbehavior.Farmersseemedtobecome(20)morescientific,joiningagriculturalsocietiesandreadingthefarmnewspapersthatsprangupthroughoutthecountry.Theybeganusingimprovedimplements,triednewcropsandpureanimalbreeds,andbecamemorereceptivetomoderntheoriesofsoilimprovement.Theyalsorespondedtoinducementsbynationalandstategovernments.FarmersstreamedtotheWest,fillingfrontierlandswithstunningrapidity.Butfarmersresponded(25)lesstotheexpectationsofagrariansandgovernmentinducementsthantogrowingmarketopportunities.EuropeandemandforfoodfromtheUnitedStatesseemedinsatiable.War,industrialization,andurbanizationallkeptdemandhighinEurope.UnitedStatescitiesandindustriesgrewaswell;evenindustriesnotdirectlyrelatedtofarmingthrivedbecauseofthemarket,money,andlaborthatagricultureprovided.12.Whatdoesthepassagemainlydiscuss?(a)TheagrarianphilosophyofThomasJefferson(b)Theroleofthenationalgovernmentinthedevelopmentofagriculture(c)Improvementsinfarmingtechniques(d)Theimpactoftheincreasedimportanceofthefarmer13.Theword“depended”inline3isclosestinmeaningto(a)improved(b)relied(c)demanded(d)explained14.TheauthormentionsThomasJeffersoninparagraph1asanexampleof(a)aleaderduringtheRevolution(b)aninventorofnewfarmingtechniques(c)aphilosopherwhobelievedfarmerswereessentialtothecreationofagoodsociety(d)afarmerwhoguidedtheagrarianmovementtowardanemphasisoneconomicdevelopment15.Thephrase“subscribedto”inline8isclosestinmeaningto(a)contributedto(b)agreedwith(c)thoughtabout(d)expandedon16.Whichofthefollowingstatementsissupportedbytheinformationinparagraph1?(a)AllgovernmentpolicymakersacceptedJefferson’sviewsofagricultureandfarmers.(b)Agriculturalproductiondeclinedbetween1783and1861.(c)Themajorityoffarmersworkedforthegovernment.(d)Agriculturewasavitalpartofthenation’seconomy.17.Accordingtothepassage,thenationalandstategovernmentsdidallofthefollowingEXCEPT(a)buildroads(b)importnewplantvarieties(c)givefarmersmoneyfortheircrops(d)developpoliciesthathelpedfarmersexporttheirproducts18.Allofthefollowingarementionedasexamplesoffarmers’meetingtheexpectationsofagrarianphilosophersEXCEPT(a)obtaininginformationfromfarmnewspapers(b)accumulatingpersonalwealth(c)plantingnewcrops(d)becomingmorescientific19.Theword“stunning”inline24isclosestinmeaningto(a)predictable(b)impressive(c)famous(d)gradual20.Whichofthefollowingstatementsisbestsupportedbyparagraph4?(a)Agriculturaldevelopmentcontributedtodevelopmentinotherpartsoftheeconomy.(b)EuropeanagriculturalproductswereofahigherqualitythanthoseproducedintheUnitedStates.(c)ThegrowingsettlementoftheWestledtoadecreaseinagriculturalproduction.(d)Farmerswereinfluencedmorebygovernmentpoliciesthanbymarketopportunities.Question21-29ThewidevarietyofclimatesinNorthAmericahashelpedspawnacomplexpatternofsoilregions.Ingeneral,therealm’ssoilsalsoreflectthebroadenvironmentalpartitioninginto“humidAmerica”and“aridAmerica.”Whereannualprecipitationexceeds20inches(50centimeters),soilsinhumidareastendtobeacidicinchemicalcontent,Sincecrops(5)dobestinsoilsthatareneitheracidic(higherinacidcontent)noralkaline(higherinsaltcontent).fertilizationisnecessarytoachievethedesiredlevelofneutralitybetweenthetwo.AridAmerica’ssoilsaretypicallyalkalineandmustbefertilizedbacktowardneutralitybyaddingacidiccompounds.Althoughmanyofthesedrylandsoils,particularlyintheGreatPlains,arequitefertile,Europeansettlerslearnedoveracenturyagothat(10)wateristhemainmissingingredientinachievingtheiragriculturalpotential.Inthe1970’s,certainirrigationmethodswereperfectedandfinallyprovidedarealopportunitytoexpandmoreintensivefarmingwestfromtheCentralLowlandintothedrierportionsoftheGreatPlains.GlaciationalsoenhancedtherichlegacyoffertilesoilsinthecentralUnitedStates,bothfromthedepositionofmineral-richglacialdebrisleftbymeltwater(15)andfromthicklayersoffinewind-blownglacialmaterial,calledloess,inandaroundthemiddleMississippiValley.NaturalvegetationpatternscouldbedisplayedonamapofNorthAmerica,buttheenormoushumanmodificationoftheNorthAmericanenvironmentinmoderntimeshasallbutreducedthisregionalizationschemetothelevelofthehypothetical.Nonetheless,(20)thehumidAmerica-aridAmericadichotomyisstillavalidgeneralization:thenaturalvegetationofareasreceivingmorethan20inchesofwateryearlyisforest,whereasthedrierclimatesgiverisetoagrasslandcover.TheforestsofNorthAmericatenttomakeabroadtransitionbylatitude.IntheCanadianNorth,needle-leafforestsdominate,buttheseconiferoustreesbecomemixedwithbroadleafdeciduoustreesasonecrossesthe(25)borderintotheNortheastUnitedStates.AsoneproceedstowardtheSoutheast,broadleafvegetationbecomesdominant.AridAmericamostlyconsistsofshort-grassprairiesorstepper.TheonlyareasoftruedesertareintheSouthwest.21WhataspectofNorthAmericadoesthepassagemainlydiscuss?(A) Thewidevarietyofclimates(B) Soiltypesandvegetationpatterns(C) Improvedirrigationmethodsandtheexpansionofagriculture(D) Thechangeinprecipitationpatterns22Theword“spawn”inline1isclosestinmeaningto(A) distinguish(B) eliminate(C) protect(D) create23Theword“partitioning”inline2isclosestinmeaningto(A) division(B) modification(C) opening(D) circulating24Accordingtothepassage,acidicsoilstenttobeassociatedwith(A) ahighsaltcontent(B) anincreaseinfarming(C) largeamountsofrain(D) glacialmeltwater25Theword“enhanced”inline13isclosestinmeaningto(A) implied(B) increased(C) indicated(D) informed26HowdidglacialmeltdownaffectthesoilinNorthAmerica?(A) Itredistributedthesoiltypes(B) Itaddedsalttothesoil(C) Itmadethesoilmoreneutralincontent(D) Itaddedmineralstothesoil27Thephrase“thisregionalizationscheme”inline19referstothe(A) movementsofglacialdeposits(B) patternsofnaturalvegetation(C) humanmodificationoftheNorthAmericanenvironment(D) distinctionbetweenhumidAmericaandaridAmerica28Theword“transition”inline23isclosestinmeaningto(A) elevation(B) change(C) advantage(D) condition29Thepassagesupportswhichofthefollowingstatements?(A) AridAmericaisnotnecessarilycharacterizedbythepresenceofdeserts(B) MostofCanadaandthenortheasternUnitedStatesconsistsofshort-grassprairieswherevernaturalvegetationhasnotbeenmodifiedbyhumans(C) Theaccumulationofloessisprimarilytheresultofirrigation(D) GlaciationremovedthefertilelayerofsoilfrommuchoftheMississippiValleyQuestions30-40Mostsourcesofilluminationgeneratelightoveranappreciableperiod,andindeedifanobjectislitforaverybrieftime(lessthat1/25second),thehumaneyewillnotreactintimetoseetheobject.Aphotographicemulsion---thatis,alight-sensitivecoatingonphotographicfilm,paper,orglass---will,however,recordmuchshorterburstsoflight.A(5)photographicflashcanthereforebeusedtocapturehigh-speedmovementonfilmaswellastocorrectdeficienciesofthenormalsurroundinglighting.Photoflashisnowgeneratedelectronically,buttheearliestform,firstusedin1864,wasapaperbagcontainingmagnesiumwireandsomeoxygen-richsubstance,suchaspotassiumchlorate.Whenthebagwasignited,themetalburnedwithanintenseflash.Acontemporaryobserverreported(10)that“thisquiteunsafedeviceseemstohavedonenothingworsethatengulftheroomindensesmokeandleadtopicturesofdubiousqualityandoddposes.”Theevolutionofthephotoflashwasslow,flashbulbs,containingfinewiremadeofametal,suchasmagnesiumoraluminum,capableofbeingignitedinanatmosphereofpureoxygenatlowpressure,wereintroducedonlyinthe1920’s.Intheearliesttype,themetal(15)wasseparatedfromtheoxygenbyathinglassbulb.Theflashwasfiredbypiercingthebulbandallowingtheoxygentocomeintocontactwiththemetal,whichignitedspontaneously.Laterbulbswerefiredbyanelectricbattery,whichheatedthewirebypassingasmallcurrentthroughit.Othercombinations,suchasthepairingofoxygendifluoridewithzirconium,havealsobeenused.Ineachcaseenoughenergyisgivenoutto(20)heattheoxidizablemetalmomentarilytoawhite-hotemissionofvisiblelight.Thesmokeparticlesaresosmallthattheycoolrapidly;butsincetheyarewhite,theycontributetothebrilliancebyreflectingthelightfromtheirstill-glowingneighbors.Aslightlybiggerformofthemetalwillburnforalongertime.30Whatdoesthepassagemainlydiscuss?(A) Thehistoryofthephotoflash(B) Theoriesabouthowtheeyereactstolight(C) Thetechnologyofmodernphotography(D) Thedangersofusingtheearlyphotoflash31Accordingtothepassage,1/25secondistheminimumamountoftimerequiredforthe(A) recordingofanimageonfilm(B) generationofartificiallight(C) creationofaphotographicemulsion(D) humaneyetoreacttolight32Accordingtothepassage,anadvantageofusingaphotoflashisthatit(A) canproducerepeatedburstsoflight(B) intensitiescolorsinphotographs(C) isshortenoughnottobotherhumaneyes(D) supplementsexistinglighting33Theword“ignited”inline9isclosestinmeaningto(A) setonfire(B) cutinto(C) opened(D) shaken34Whichofthefollowingphrasesisdefinedinparagraph1?(A)”appreciableperiod”(line1)(B)”photographicemulsion”(line3)(C)”high-speedmovement”(line5)(D)”oddposes”(line11)35Theword“evolution”inline12isclosestinmeaningto(A) publicity(B) adoption(C) development(D) manufacture36Thefunctionoftheglassinthefirstflashbulbswasto(A) producethesparkthatinitiatedtheflash(B) magnifythelightproducedbytheflash(C) protectthephotographerfromtheheatoftheflash(D) keepthemetalandoxygenapartbeforetheflash37Theword“it”inline18refersto(A) oxygen(B) battery(C) wire(D) current38Theword“momentarily”inline20isclosestinmeaningto(A) effortlessly(B) briefly(C) electronically(D) gradually39Accordingtothepassage,thewhitecolorofthesmokeparticlesgeneratedbyaflashbulbcontributesto(A) rapidcooling(B) brightillumination(C) electricalconductivity(D) intenseheat40Accordingtothepassage,aflashbulbcanbemadetoburnlongerbyusing(A) thickerwire(B) moreoxygen(C) thinnerglass(D) continuouselectricityQuestions41-50ThestylisticinnovationinpainingknownasImpressionismbeganinthe1870’s.TheImpressionistswantedtodepictwhattheysawinnature,buttheywereinspiredtoportrayfragmentarymomentsbytheincreasinglyfastpaceofmodernlife.Theyconcentratedontheplayoflightoverobjects,people,andnature,breakingupseeminglysolidsurfaces,(5)stressingvividcontrastbetweencolorsinsunlightandshade,anddepictionreflectedlightinallofitspossibilities.Unlikeearlierartists,theydidnotwanttoobservetheworldfromindoors.Theyabandonedthestudio,paintingintheopenairandrecordingspontaneousImpressionsoftheirsubjectsinsteadofmakingoutsidesketchesandthenmovingindoorstocompletetheworkformmemory.(10)SomeoftheImpressionists’paintingmethodswereaffectedbytechnologicaladvances.Forexample,theshiftfromthestudiototheopenairwasmadepossibleinpartbytheadventofcheaprailtravel,whichpermittedeasyandquickaccesstothecountrysideorseashore,aswellasbynewlydevelopedchemicaldyesandoilsthatledtocollapsiblepainttubes,whichenabledartiststofinishtheirpaintingsonthespot.(15)Impressionismacquireditsnamenotfromsupportersbutfromangryartloverswhofeltthreatenedbythenewpainting.Theterm“Impressionism”wasbornin1874,whenagroupofartistswhohadbeenworkingtogetherorganizedanexhibitionoftheirpaintingsinordertodrawpublicattentiontotheirwork.Reactionfromthepublicandpresswasimmediate,andderisive.Amongthe165paintingsexhibitedwasonecalled(20)Impression:Sunrise,byClaudeMonet(1840-1926),Viewedthroughhostileeyes,Monet’spaintingofarisingsunoveramisty,waterysceneseemedmessy,slapdash,andanaffronttogoodtaste.BorrowingMonet’stitle,artcriticsextendedtheterm“Impressionism”totheentireexhibit.Inresponse,Monetandhis29fellowartistsintheexhibitadoptedthesamenameasabadgeoftheirunity,despiteindividualdifferences.(25)Fromthenuntil1886Impressionismhadallthezealofa“church”,asthepainterRenoirputit.MonetwasfaithfultotheImpressionistcreeduntilhisdeath,althoughmanyoftheothersmovedontonewstyles.41Whataspectofpaintinginthenineteenthcenturydoesthepassagemainlydiscuss?(A) Theimpactofsomeartists’resistancetothefastpaceoflife(B) Thedifferenc