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1、Unit3Scienceversusnature课题Unit3Scienceversusnature课型复习课教学目标培养阅读技巧，限时训练重点限时训练2,4,6难点限时训练教法讲授法、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ThirdperiodReadingstrategies:UnderstandingscientifictermsWhenreadingarticlesaboutscience,weoftencomeacrossdifficultscientificterms.Wehavetoworkouttheirmean
2、inginordertounderstandthetextasawhole.Beginbyreadingthefirstandlastparagraphsforanideaofwhatthearticleisabout.Then,scanthebodyofthearticle.Circleanywordsyoudonotknow.Questionthingsyoudonotunderstandorthatdonotappeartomakesense.Finally,readthroughthearticleafewtimes.Youwilloftenb
3、eamazedtodiscoverthatwhatconfusedyouatfirstmakessenseuponfurtherreadings.2011年江西卷D篇Whyshouldmankindexplorespace?Whyshouldmoney,timeandeffortbespentexploringandresearchingsomethingwithsofewapparentbenefits?WhyshouldresourcesbespentonspaceratherthanonconditionsandpeopleonEarth?The
4、searequestionsthat,understandably,areveryoftenasked.Perhapsthebestanswerliesinourgeneticmakeup(基因构成)ashumanbeings.Whatdroveourancestorstomovefromthetreesintotheplains,andonintoallpossibleareasandenvironments?Thewiderthespreadofaspecies,thebetteritschanceofsurvival.Perhapsthebest
5、reasonforexploringspaceisthisgenetictendencytoexpandwhereverpossible.Nearlyeverysuccessfulcivilizationhasexplored,becausebydoingso,anydangersinsurroundingareascanbeidentifiedandpreparedfor.Withoutknowledge,wemaybecompletelydestroyedbythedanger.Withknowledge,wecanlessenitseffects
6、.Explorationalsoallowsmineralsandotherpotential(潜在的)resourcestobefound.Evenifwehavenoimmediateneedofthem,theywillperhapsbeusefullater.Resourcesmaybemorethanphysicalpossessions.Knowledgeortechniqueshavebeenacquiredthroughexploration.Thetechniquesmayhavemedicalapplicationswhichcan
7、improvethelengthorqualityofourlives.Wehavealreadybenefitedfromotherspin-offsincludingimprovementsinearthquakeprediction,insatellitesforweatherforecastingandincommunicationssystems.Evennon-stickpansandmirroredsunglassesareby-products(副产品)oftechnologicaldevelopmentsinthespace,thec
8、hancetosaveourselvesmightnotexist.Whilemanyreso
