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.Wehavetoworkouttheirmeaninginordertounderstandthetextasawhole.Beginbyreadingthefirstandlastparagraphsforanideaofwhatthearticleisabout.Then,scanthebodyofthearticle.Circleanywordsyoudonotknow.Questionthingsyoudonotunderstandorthatdonotappeartomakesense.Finally,readthroughthearticleafewtimes.Youwilloftenbeamazedtodiscoverthatwhatconfusedyouatfirstmakessenseuponfurtherreadings.2011年江西卷D篇Whyshouldmankindexplorespace?Whyshouldmoney,timeandeffortbespentexploringandresearchingsomethingwithsofewapparentbenefits?WhyshouldresourcesbespentonspaceratherthanonconditionsandpeopleonEarth?Thesearequestionsthat,understandably,areveryoftenasked.Perhapsthebestanswerliesinourgeneticmakeup(基因构成)ashumanbeings.Whatdroveourancestorstomovefromthetreesinto2theplains,andonintoallpossibleareasandenvironments?Thewiderthespreadofaspecies,thebetteritschanceofsurvival.Perhapsthebestreasonforexploringspaceisthisgenetictendencytoexpandwhereverpossible.Nearlyeverysuccessfulcivilizationhasexplored,becausebydoingso,anydangersinsurroundingareascanbeidentifiedandpreparedfor.Withoutknowledge,wemaybecompletelydestroyedbythedanger.Withknowledge,wecanlessenitseffects.Explorationalsoallowsmineralsandotherpotential(潜在的)resourcestobefound.Evenifwehavenoimmediateneedofthem,theywillperhapsbeusefullater.Resourcesmaybemorethanphysicalpossessions.Knowledgeortechniqueshavebeenacquiredthroughexploration.Thetechniquesmayhavemedicalapplicationswhichcanimprovethelengthorqualityofourlives.Wehavealreadybenefitedfromotherspin-offsincludingimprovementsinearthquakeprediction,insatellitesforweatherforecastingandincommunicationssystems.Evennon-stickpansandmirroredsunglassesareby-products(副产品)oftechnologicaldevelopmentsinthespace,thechancetosaveourselvesmightnotexist.Whilemanyresourcesarespentonwhatseemsasmallreturn,theexplorationofspaceallowscreative,braveandintelligentmembersofourspeciestofocusonwhatmayservetosaveus.Whilespacemayholdmanywondersandexplanationsofhowtheuniversewasformedorhowitworks,italsoholdsdangers.Thedangerexists,butknowledgecanhelphumanbeingtosurvive.Withouttheabilitytoreachoutacrossspace,thechancetosaveourselvesmightnotexist.WhileEarthistheonlyplanetknowntosupportlife,surelytheadaptiveabilityofhumanswouldallowustoliveonotherplanets.Itistruethatthelifestylewouldbedifferent,buthumanlifeandcultureshaveadaptedinthepastandsurelycouldinthefuture.71.WhydoestheauthormentionthequestionsinParagraph1?A.Toexpresshisdoubts.B.Tocomparedifferentideas.C.Tointroducepointsfordiscussion.D.TodescribetheconditionsonEarth.72.WhatisthereasonforexploringspacebasedonParagraph2?A.Humansarenature-borntodoso.B.Humanshavethetendencytofight.C.Humansmayfindnewsourcesoffood.D.Humansdon’tliketostayinthesameplace.73.Theunderlinedword“spin-offs”inParagraph4probablyrefersto______.A.survivalchancesB.potentialresourcesC.unexpectedbenefitsD.physicalpossessions74.Whatmakesitpossibleforhumanstoliveonotherplanets?A.Ourgeneticmakeup.B.Resourcesontheearth..C.Theadaptiveabilityofhumans.D.By-productsinspaceexploration.75.Whic...
