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1、Unit3Scienceversusnature课题Unit3Scienceversusnature课型复习课教学目标把握考点,规范写作重点重点词汇,句型2,4,6难点规范写作教法讲授法、讨论法、探究法教学过程教学内容个案调整教师主导活动学生主体活动ForthperiodProject1:ManversusnatureForalongtime,ourenvironmenthasbeendamagedbecausehumanshavebeencareless.Peoplehaveharmednaturethroughagriculture,fishing,huntingan
2、dtourism.WefurtherdamageEarthbybuildingnewchannelsintheseaandfactoriesontheland,andbycreatingpollutionwithchemicalwaste.Wewillsomedaydestroytheplanetweliveonifwecontinueinthisway.However,ifwefocusonlyonconservation,thenpeoplemaysuffer.Noteverythingthatisbestfornatureisgoodforpeople.Woulda
3、nyonesaythatdevelopmentshouldbestoppedinfavorofnature?Fromthepointofviewofsomepeople,weareonlydoingwhathumanshavealwaysdone,usingnaturetomeetourownneeds.Otherpeoplearguethatsuchthinkingmaycauseacatastrophe,unlesswestarttolookaroundandunderstandhowacleanenvironmentbenefitsusall.Afterdecade
4、sofdestroyingnatureandusingupnaturalresources,manydevelopednationsarenowconcernedaboutsavingnatureratherthandevelopingordestroyingit.However,manypoorernationsmustfocusonmeetingtheeverydayneedsoftheirpeople.Indoingso,theyareusingupnaturalresourcesatafastpace.Theyhavenotyetseentheeffectsoft
5、hecarelessuseoftheenvironmentlikemanywealthynationshave.Oftentheydonotrealizethatthechoicestheymakearebadfortheenvironment.Shouldtheybeblamedfordestroyinghundredsofthousandsofacresofrainforestifitmeansabetterincomefortheirpeople?Thedevelopedanddevelopingcountriesoftheworldneedtoworktogeth
6、ertomakesurethatpeopleenjoyhealthyandhappylives,withouttheenvironmentaroundthemsuffering.Itshouldnotbeaquestionofhumanswinningandnaturelosing.Humanscanonlyreallywinbyprotectingnature.Afterall,foodhastobeproducedinahealthy,naturalsystem,andweallneedcleanairtobreatheandpurewatertodrink.Itis
7、mankind'sresponsibilitytofindanswersthataregoodforeveryone,andeverything.Project2:GMfood:hopeordanger?Inrecentyears,therehasbeengreatprogressinthestudyofgenetics.Withthisprogress,doorshavebeenopeneduptotechnologiesthatneverexistedbefore.Whilemanypeopleareexcitedabou