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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.Wehavetowo
2、rkouttheirmeaninginordertounderstandthetextasawhole.Beginbyreadingthefirstandlastparagraphsforanideaofwhatthearticleisabout.Then,scanthebodyofthearticle.Circleanywordsyoudonotknow.Questionthingsyoudonotunderstandorthatdonotappeartomakesense.Finally,readthroughthear
3、ticleafewtimes.Youwilloftenbeamazedtodiscoverthatwhatconfusedyouatfirstmakessenseuponfurtherreadings.2011年江西卷D篇Whyshouldmankindexplorespace?Whyshouldmoney,timeandeffortbespentexploringandresearchingsomethingwithsofewapparentbenefits?Whyshouldresourcesbespentonspace
4、ratherthanonconditionsandpeopleonEarth?Thesearequestionsthat,understandably,areveryoftenasked.Perhapsthebestanswerliesinourgeneticmakeup(基因构成)ashumanbeings.Whatdroveourancestorstomovefromthetreesintotheplains,andonintoallpossibleareasandenvironments?Thewiderthespre
5、adofaspecies,thebetteritschanceofsurvival.Perhapsthebestreasonforexploringspaceisthisgenetictendencytoexpandwhereverpossible.Nearlyeverysuccessfulcivilizationhasexplored,becausebydoingso,anydangersinsurroundingareascanbeidentifiedandpreparedfor.Withoutknowledge,wem
6、aybecompletelydestroyedbythedanger.Withknowledge,wecanlessenitseffects.Explorationalsoallowsmineralsandotherpotential(潜在的)resourcestobefound.Evenifwehavenoimmediateneedofthem,theywillperhapsbeusefullater.Resourcesmaybemorethanphysicalpossessions.Knowledgeortechniqu
7、eshavebeenacquiredthroughexploration.Thetechniquesmayhavemedicalapplicationswhichcanimprovethelengthorqualityofourlives.Wehavealreadybenefitedfromotherspin-offsincludingimprovementsinearthquakeprediction,insatellitesforweatherforecastingandincommunicationssystems.E
8、vennon-stickpansandmirroredsunglassesareby-products(副产品)oftechnologicaldevelopmentsinthespace,thechancetosaveourselvesmightnotexist.Whilemanyreso
