高中英语 Unit 4 Global warming 第一学时 Reading and Comprehension课件 新人教版选修6.ppt

unit4globalwarming第一学时readingandcomprehension task1 快速阅读课文 theearthisbecomingwarmer butdoesitmatter 用大约30词写出课文的概要 温馨提示 本文属于说明文 以说明为主要表达方式来解说事物 阐明事理 启迪思维 写概要时要紧扣说明的对象 并根据文章的总分结构 围绕不同的观点来阐述地球变暖的原因以及预测利弊的要点 答案 inthepassage sophiearmstrongexploresthequestionsonhowhumanactivitycreates greenhousegases whichdirectlyleadstotheglobalwarming andshowsusthedifferentattitudesamongscientiststowardsglobalwarming task2 仔细阅读 theearthisbecomingwarmer butdoesitmatter 选择正确答案 1 fromthepassagewecaninferthattheauthorprobablyagreesthat a globalwarmingisgoodforhumansindeedb peopleshoulddonothingabouttheglobalwarming d c catastropheswillhappeniftheglobekeepsonwarmingd alotremainstobefoundoutabouttheeffectsofglobalwarming2 allthefollowingsaretrueexcept a everyonebelievesthatglobalwarmingiscausedbyhumanactivitiesb carbondioxideisabyproductofburningfossilfuels a c peopleacceptcharleskeeling sdatabecausehetookaccuratemeasurementsd notallthescientistsagreewitheachotherontheeffectoftheglobalwarming3 themaindifferencebetweendr janicefoster stheoryandgeorgehambley sliesin a howtopreventglobalwarmingb whatcausesglobalwarming d c whetherglobalwarmingwouldcauseseriousproblemsornotd whetherthelevelsofcarbondioxidehaveincreaseornotovertheyears4 buttherearesomeverydifferentattitudesamongscientiststowardsthisissue issue heremeansthesameastheonein a iboughtthenewstampthedayofitsissue b b thisisabigissue weneedmoretimetothinkaboutitc sheisalwaysonadiet shehasissuesaboutfoodd themagazinehas12issueseachyear5 whatmayhappenifwedonothingaboutglobalwarming a theremaybeariseofthesealevel a b thetemperaturewillsurelybelower c the greenhouseeffect willdisappear d ithasnothingtodowithus task3 再次阅读 theearthisbecomingwarmer butdoesitmatter 然后完成下面的表格 fossilfuels produceenergy carbondioxide add up sealevel floods droughts quicker more task4 根据课文 theearthisbecomingwarmer butdoesitmatter 完成下列短文 thereisnodoubt1 theearthisbecomingwarmerbutthereisafiercedebateoverwhetheritishumanactivitythathascausedthisglobalwarmingorwhetheritisjustanaturalphenomenon manyscientistslikedr janicefosterbelievethatpeoplehavecausedtheincreaseintheearth stemperature that 2 theburningoffossilfuelslikecoal naturalgasandoiltoproduceenergy3 byproductsarecalled greenhouse gases themostimportantone4 carbondioxide thesegasestrapheatfromthesunandthereforewarmtheearth withoutwhichtheearth5 be aboutthirty threedegreescelsiuscoolerthanitis butincreasedamountofcarbondioxidemeansthat6 heatenergyistrappedintheatmosphere7 cause theglobaltemperaturetogo8 through whose being wouldbe more causing up on9 otherhand scientists