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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,huntingandto
2、urism.WefurtherdamageEarthbybuildingnewchannelsintheseaandfactoriesontheland,andbycreatingpollutionwithchemicalwaste.Wewillsomedaydestroytheplanetweliveonifwecontinueinthisway.However,ifwefocusonlyonconservation,thenpeoplemaysuffer.Noteverythingthatisbestfornatureisgoodforpeople.Wouldanyones
3、aythatdevelopmentshouldbestoppedinfavorofnature?Fromthepointofviewofsomepeople,weareonlydoingwhathumanshavealwaysdone,usingnaturetomeetourownneeds.Otherpeoplearguethatsuchthinkingmaycauseacatastrophe,unlesswestarttolookaroundandunderstandhowacleanenvironmentbenefitsusall.Afterdecadesofdestro
4、yingnatureandusingupnaturalresources,manydevelopednationsarenowconcernedaboutsavingnatureratherthandevelopingordestroyingit.However,manypoorernationsmustfocusonmeetingtheeverydayneedsoftheirpeople.Indoingso,theyareusingupnaturalresourcesatafastpace.Theyhavenotyetseentheeffectsofthecarelessus
5、eoftheenvironmentlikemanywealthynationshave.Oftentheydonotrealizethatthechoicestheymakearebadfortheenvironment.Shouldtheybeblamedfordestroyinghundredsofthousandsofacresofrainforestifitmeansabetterincomefortheirpeople?Thedevelopedanddevelopingcountriesoftheworldneedtoworktogethertomakesuretha
6、tpeopleenjoyhealthyandhappylives,withouttheenvironmentaroundthemsuffering.Itshouldnotbeaquestionofhumanswinningandnaturelosing.Humanscanonlyreallywinbyprotectingnature.Afterall,foodhastobeproducedinahealthy,naturalsystem,andweallneedcleanairtobreatheandpurewatertodrink.Itismankind'sresponsib
7、ilitytofindanswersthataregoodforeveryone,andeverything.Project2:GMfood:hopeordanger?Inrecentyears,therehasbeengreatprogressinthestudyofgenetics.Withthisprogress,doorshavebeenopeneduptotechnologiesthatneverexistedbefore.Whilemanypeopleareexcitedabou
