高中英语 unit4 第1课时 reading学案 新人教版选修6

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1、Unit4GlobalWarmingPeriod1readingLearningaims:1.Knowwelltheglobalwarming2.Enablethestudentstotalkaboutdifferentsourcesofenergy.Importantpoint:Learningabouteffecttheglobalwarmingbringshumanbeing.Difficultpoint:Toimprovetheskillsofreading.使用说明及学法指导：1.通过阅读课本P25-

2、27，完成预习案。2.完成时间：30分钟。预习案PreviewingCaseTask1Dividethetextinto4partsandmatchtheideaofeachpart.Part1(Para__)Twodifferentattitudesamongscientiststowardsglobalwarming.Part2(Para__to__)Whetherpeopleshoulddosomethingaboutglobalwarmingornot.Part3(Para__to_)Howglobal

3、warmingcomesabout.Part4(Para__)Introduceadebateovertheissueofglobalwarming.Task2CarefulreadingPart11)Whowrotethemagazinearticle?Whatisthenameofthemagazine?_______________________________Part22)Whataregraph1about?______________________________________________

4、________________3)Whatisthereasonoftheincreaseintheearth’stemperature?_________________________________________________________________________________________4)Whatwillhappenifweaddquantitiesofcarbondioxideintotheatmosphere?_________________________________

5、________________________________________________________Part3:ListCharlsKeeling’s,Dr.JaniceFoster’s&GeorgeHambley‘stheideasCharlsKeelingDr.JaniceFosterGeorgeHambleyGraph2showsthatcarbondioxidecontentoftheatmosphere5)_________From1957to1997.Carbondioxidehasca

6、usedtheglobaltemperatureto6)________.Anincreaseoffivedegreeswouldbea7)_________andcouldbe8)______________.Morecarbondioxideisa9)__________thing,whichmakescrops10)__________moreandwillen-courage11)______________________.Task3TrueorFalse(FinishP27Comprehending

7、2)Task4语法填空Thereisnodoubtthattheearthisbecoming1________(warm).Buthowhasthiscomeaboutanddoesitmatter?Peoplehavefiercedebatesaboutwhether2______ishumanactivitythathascausedthisglobalwarming,3___________(compare)withmostofthenaturalchanges.Manyscientists4_____

8、Dr.JaniceFosterbelievethatpeoplehavecausedtheincreaseintheearth’stemperature5___burningfossilfuelslikecoal,naturalgasandoiltoproduceenergy.Somebyproductsofthisprocessarecalled“greenhouse”gases,t