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时间:2019-10-27
《大学英语听力教程第三册(第二版) 听力原文》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、大学英语听力教程第三册(第二版)听力原文大学英语听力教程第三册(第二版)听力原文UNIT1Part1BTheAmazonforestsaredisappearingbecauseofincreasedburningandtreeremoval.InSeptember,satellitepicturesshowedmorethan20000firesburningintheAmazon.Expertssaymostofthesefiresweresetbyfarmers.Thefarmerswereattemptingtoclearlandt
2、ogrowcrops.TheWorldWildlifeFundsaysanotherseriousproblemisthattoomanytreesintheAmazonrainforestarebeingcutdown.TheWorldWildlifeFundsaysthefiresshowtheneedforurgentinternationalactiontoprotecttheworld'srainforests.Thegroupwarnsthatwithoutsuchactionsomeforestscouldbelostfore
3、ver.2.EnvironmentalissuesswelltothefullinBerlinthisweek,fortheUNspongsoredconferenceonglobalwarmingandclimatechangeisthefirstsuchmeetingsincetheRiosummitthreeyearsago.WithscientistsandgovernmentsnowgenerallyreadytoacceptthattheearthclimateisbeingaffectedbyemissionsofCO2and
4、othergreenhousegases,overahundredcountriesaresendingdelegations.ButhowmuchprogresshasbeenmadeimplementingthegreenhousegasreductiontargetagreedonatRio?SimonDaryreports...Part2TheearthatriskI:BrianCowlesistheproducerofanewseriesofdocumentariescalled"TheEarthatRisk"whichcanbe
5、seenonChannel4laterthismonth.Eachprogramdealswithadifferentcontinent,doesn'tit,Brian?B:That'sright.WewenttoAmerica,bothNorthandSouthandthenwewentovertoAfricaandSouth-EastAsia.I:Andwhatdidyoufindineachofthesecontinents?B:StartingwithAfrica,ourfilmshowstheimpactofthepopulati
6、onontheenvironment.Generallyspeaking,thishascausedtheSaharaDeserttoexpand.It'sabitofaviciouscirclewefind.Peoplecutdowntreesforfirewoodandtheirdomesticanimalseatalltheavailableplants—andsoconsequentlytheyhavetomovesouthastheSaharaDesertexpandsfurthersouth.Imean,soonthewhole
7、ofMaliwillbecomeadesert.AndinEastAfrica:herethegrasslandsaresupportingtoomanyanimalsandtheresultis,ofcourse,there'snograss—nothingfortheanimalstoeat.I:Isee.AndthenextfilmdealswithNorthAmerica?B:That'sright.IntheUSA,asyouknow,intensiveagriculturerequiresaplentifulsupplyofra
8、inforthesecropstogrow,Imeanifthereisn'tenoughrainthecropsdon'tgrow.Andgrowingcropsstabili
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