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1、【托福听力备考】TPO14听力文本——Lecture2众所周知，托福TPO材料是备考托福听力最好的材料。相信众多备考托福的同学也一直在练习这套材料，那么在以下内容中我们就为大家带来托福TPO听力练习的文本，希望能为大家的备考带来帮助。TPO14Lecture2BiologyNarrator:Listentopartofalectureinabiologyclass.Professor:Almostallanimalshavesomewayofregulatingtheirbodytemperature;otherwi
2、setheywouldn’tsurviveextremehotorcoldconditions---sweating,panting,swimmingtocoolerorwarmerwater;duckingintosomewherecoollikeaburroworaholeunderarock;thesearejustafew.Andthatspotiscolderorwarmerthanthesurroundingenvironment,becauseit’samicroclimate.Amicroclimat
3、eisagroupofclimateconditionsthataffectalocalizedarea,weatherfeaturesliketemperature,wind,moistureandsoon.AndwhenIsaylocalized,Imeanreallylocalized,becausemicroclimatescanbe,asthenamesuggests,prettysmall,evenlessthanasquaremeter.Andmicroclimatesareaffectedbyhuge
4、numberofothervariables.Obviouslyweatherconditionsinthesurroundingareaareafactor.Butotheraspectsofthelocationlike,um…theelevationoftheland,theplantlifenearby,andsoon,haveasubstantialeffectonmicroclimates.Andofcoursethehumandevelopmentinthearea,um,aroadwillaffect
5、anearbymicroclimate.It’salsointerestingtonotethatmicroclimatesthatareneareachothercanhaveverydifferentconditions.Intheforestforexample,therecanbeanumberofverydifferentmicroclimatesclosetoeachother,becauseofallthevariablesIjustmentioned.Student:Sohowdoesaholeint
6、heground,aburrow,staycoolinahotclimate?Professor:Well,sincecoldairsinks,andthesespotsareshaded,theyareusuallymuchcoolerthanthesurroundingarea.Andthesespotsaresoimportantbecausemanyanimalsrelyonmicroclimatestoregulatetheirbodytemperature.Um,forinstance,thereisas
7、peciesofsquirrel,intheWesternpartoftheUnitedStatesthatcangetreallyhotwhentheyareoutforagingforfood.Sotheyneedawaytocooldown.Sowhatdotheydo?Theygobacktotheirownburrow.Oncetheygetthere,theirbodytemperaturesdecreasevery,veryquickly.Thetriptotheburrowpreventsthesqu
8、irrelfromgettingtoohot.Student:Butsquirrelsaremammals,right?Ithoughtmammalsregulatedtheirtemperatureinternally.Professor:Mammalsdohavetheabilitytoregulatetheirbodytemperatur
