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ReadingandThinkingUnit03EnvironmentalProtection
新人教选择性必修三LearningObjectivesByreading,explaincausesandnegativeeffectsofglobalwarming;Beawareoftheimportanceofcuttinggreenhousegasesandtakeeffectiveactiontodoit;Byteamwork,presenthowtosolvetheproblemofglobalwarmingingroups.1lookanddiscussWhat’shappeninginthepicture?Whereisit?ThepictureshowedusGlaciermelting,wecanseealargepieceoficebreakingoffalargeglacier.ItislikelytobeintheArcticorAntarcticaorsomewherenearby.What’shappeninginthepicture?Whereisit?pre-reading2Whathappenedtothepolarbearinthisvideo?whatcausedthis?1.What’sthetypeofthistext?a.newsreportb.biographyc.expositoryessayd.argumentation2.what’sthemainpurpose?topersuadereaderstofocusonclimatechangeproblem
while-reading3ExpositoryessayTheauthorssometimesusesomegraphsordiagramsintheiressaysinordertoconvincetheirreaders.Thesegraphsanddiagramsoftencomefromscientificreasearchreportsand
otherreliableresources.predict:1.Whatisthegraphabout?Whatinformationcanyougetfromit?2.Whatdoyouthinkmighthavecausedthepolarbear'sdeath?readforthestructure:1.searchforthetopicsentenceofeachparagraphandsummarizethemainidea.2.dividethepassageintoseveralpartsTask1:Findthekeysentenceofeachparagraphandsummarizethemainideaofeachpart:Para1Para2TheevidenceofdramaticclimatechangethathadanimpactonEarth’secology瘦骨嶙峋Para3ThecauseoftheincreaseintheglobalaveragesurfacetemperaturePara4Para5TheconsequencesoftheriseintemperatureThesolutionstoreducinggreenhousegasemissionsSummaryPartParagraphMainideaⅠ1-2Ⅱ3Ⅲ4Ⅳ5TheevidenceofdramaticclimatechangethathadanimpactonEarth’secologyThecauseoftheincreaseintheglobalaveragesurfacetemperatureTheconsequencesoftheriseintemperatureThesolutionstoreducinggreenhousegasemissionsevidencecauseconsequencessolutionsTask2:ReadfordetailsReadPara1-2andanswerthequestion:
Findthecauseandeffectthatcanshowhowclimatechangehasinfluencedthepolarbear’slife?Findthecauseandeffectthatcanshowhowclimatechangehasinfluencedthepolarbear’slife?climatechangelowsea-icelevelsbearscouldnothunthadtotravelgreaterdistancestofindfoodstarvedtodeathitsdeadbodyfound1.“greenhouseeffect”.__________greenhouseeffect_________greenhouseeffectcausingEarth’ssurfacetemperature______________iftoomuchheatenergyis_______keepingEarth’sclimate_______and__________naturalman-madewarmhabitabletorisequicklytrappedReadPara31.makeamindmapaboutgreenhouseeffect
2.createadiagramdescribinghowitworks
ReadPara4andsortoutthetextinformationrelationship.Theriseintemperatureextremeweather/naturaldisastersextremerainstorms,heatwavesseriousdamage,costinghumanlives,economiclossesleadstoexamplesresultsInPara4,whydidtheauthormentiontheclimatescientists’warning?Becauseitisessentialthatwetakeactionandsoitneedstobebroughttoeveryone’sattention.ReadPara5andanswerthequestions:Howcanindividualsreduce“carbonfootprint”?Whatistheauthor’spurposeofwritingthistext?Weasindividualscanalsoreduceour“carbonfootprint”byrestrictingtheamountofcarbondioxideourlifestylesproduce.Theauthor’spurposeistoinformthereadersandinspirethemtodowhatevertheycantodealwiththisproblem.Earthprovidesenoughtosatisfyeveryman’sneeds,butnoteveryman’sgreed.—MohandasK.GandhiSuchasshelter,air,food,waterandthemeanstodosomethingproductiveandmeaningful.Greedisadesirethatcanneverbesatisfied.NeedsmeanallbasiclivingthingsThequoteisusedheretosuggestthatconsumptionpoweredbygreedisaprimecauseofenvironmentaldegradatio
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