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时间:2018-12-16
《2017-2018学年高中英语 unit 4 global warming课时作业 新人教版选修6》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Unit4 Globalwarming【导语】全球气温变暖给南极的企鹅带来了怎样的影响,你知道吗?为了保护他们,我们应该怎么做?Antarctica,thecoldestplaceonEarth,istoocoldformosthumans.It'sadifferentstoryforpenguins,though.SeveraltypesofpenguinsmaketheirhomeinAntarctica.Thebirdswalkwithshortstepsallovertheicycontinent.However,theydon'tallhave“happyfeet”.SomeofA
2、ntarctica'spenguinsareendangered.Theanimals,huntforfoodinwatersoffAntarctica'scoasts.Theyusefloatingseaiceasaplacetorestwhiletheysearch.Inrecentyears,globalwarming,theslowriseofEarth'stemperature,hasbeencausingtheicetomelt.“Globalwarmingisreducingtheamountoffoodforpenguinssothattheycan'tfindenought
3、oeat,”scientistShayeWolfsaid.TurninguptheheatHumansmaybedirectlyresponsibleforthecontinent'stemperaturechanges,accordingtoanewstudyinthejournalNatureGeoscience.TemperaturesinAntarcticausuallydonotgoabovefreezing,or32degreesFahrenheit.Butlatelytheweatherhasbeenheatingup.Peopleaddtoglobalwarmingwhent
4、heydrivecarsoruseelectricity.Thatburnsfossilfuels,suchascoal,oil,andnaturalgas.TheburningoffossilfuelsgivesoffgasesthatwarmEarth.TheharmfulgasesstayintheatmosphereaboveAntarctica,researcherssay.Theyfoundthatthewestsideofthecontinentisespeciallyaffectedbyglobalwarming.Scientistsareconcernedaboutthep
5、ossibilitythatAntarctica'sicemaymeltmoreovertime.Theicycontinentisabout5millionsquaremiles.Itiscoveredbyglaciersandanicecap(冰冠)about7,100feetthick.Iftheicemelts,thatcouldcausesealevelstorisearoundtheworld.Highersealevelscouldleadtodangerousfloodinginsomecountries.CoolfixforAntarcticaExpertsarehopef
6、ulthatconditionsinAntarcticacanbeimproved.Theysaypeoplecanreduceglobalwarmingbyusingcarsandelectricitylessoften.Evenkidscanhelp.Wolfsuggests,“Talktoyourfriendsandfamilyaboutglobalwarming,howitisharmingpenguins,andhowimportantitistostopglobalwarmingtoday.”【词海拾贝】1.Antarctican.南极洲2.penguinn.企鹅3.fossil
7、n.化石;生物4.glaciern.冰河;冰川【问题思考】1.Whycan'tpenguinsfindenoughfoodtoeat?_______________________________________________________答案:Becauseglobalwarmingisreducingtheamountoffoodforthem.2.Whomaybedirectlyresponsibl
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