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托福阅读考试经典题型托福阅读考试经典题型大家把理论知识学习好的同时，也应该要复习，从复习中找到自己的`不足，以下是小编为大家搜索整理的托福阅读考试经典题型，希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网!QuestionsAccordingtosomescientists,migratorybirdsshouldbeabletowithstandthewinter.Abirdsfeatherycoatisgoodinsulationagainstthecold.BECauseabirdiswarm-blooded,itsbodytemperaturealwaysremainsconstant,evenifthetemperatureofitssurroundingschanges.Thefactorsthattriggermigratorybehaviorinbirdsaredifficulttoexplain.Thisbehaviorseemstobeinstinctive,notlearned.Forexample,manynorthernspeciesleavetheirsummerhomeswhiletheweatherisstillwarmandthefoodsupplyplentiful.Youngarcticternsbornatthearcticbreedinggroundswilllakeoffwiththeflockfordistantlandstheyhaveneverseen.Birdmigrationsareprobablyregulatedbytheglandularsystem.Scientistssuspectthatthechanginglengthofthedayisthefactorthattriggersmigratorybehavior.Inanexperiment,migratorybirdswerekeptinartificiallylightedrooms.Itwasfoundthatifperiodsofdarknesswerelengthenedproportionately,theglandsofthebirdsbecameactive.Theseglandssecretehormones,whicharechemicalsthatcontrolnumerousbodyfunctions.Shorterperiodsofdaylightseemtochangethehormonebalanceofbirds,sothattheyretainmorefat.Thisstoredfatisthefuelthatprovidestheenergyforalongflight.Thesameexperimentrevealedthatthebirdsbecamemoreexcitedastheartificialnightwaslengthened.Itisprobablynocoincidencethatmostflocksbegintheirmigratoryflightsduringthenight.11.Whatdoesthepassagemainlydiscuss?(A)Commonmigratorypathsforbirds(B)Whybirdsmigrate(C)Speciesofbirdsthatdonotmigrate(D)Migrationincoldclimates12.Theword"withstand"inline1isclosestinmeaningto(A)prefer(B)tolerate(C)regulate(D)understand13.Accordingtothepassage,whichofthefollowingprotectsbirdsagainstcoldweather?(A)Glands(B)Hormones(C)Feathers(D)Artificiallight14.Theword"constant"inline3isclosestinmeaningto(A)invariable(B)persistent(C)predictable(D)responsive15.Theword"its"inline3refersto(A)temperature(B)cold(C)coat(D)bird16.Inlines7-9,theauthormentionsyoungarcticternsasane
