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2014年春季高一英语人教版必修三配套课件：Unit 4 Astronomythe science of the stars Section Ⅰ
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Unit4Astronomy:thescienceofthestarsWeliveonthesameplanet―theearth1.Doyouknowtheoriginoflifeonearth?2.Eachreligionorculturehasitsownideasabouthowlifebeganonearth.InChineseculture…____________separates(分)thesky fromtheearth.Pangu盘古skyearth_____________madehumanbeings.Nuwa(女娲)Inwesterncountries: ______________createdtheworldandalllivingthings.God(上帝)Doyouknowwhatascientificideais?BackgroundknowledgeTheBigBangisthetermusedtodescribeahugeexplosionthatscientistsbelievehappenedabout15billionsyearsago.NobodyknowswhatcausedtheBigBang.Butitwastheeventthatcreatedouruniverse.TheBigBangPre-readingTheuniversebeganwithaBigBang.While-readingReadthepassageonP25quickly,andmatchtherightmainideaofeachparagraph.Howmanypartscanthetextbedividedinto?Step1.FastreadingHowlifebeganontheearthPara.1Para.2Para.3Para.4Para.5AtheoryabouthowtheuniversewasformedTheformation(形成）oftheearthTheimportanceofwaterforlifeThedevelopmentofplantsandanimalsThearrivalofhumansandtheireffectsontheearthPart1:ThedevelopmentoftheearthPart2:Thedevelopmentoflife.Part1(1~3):ThedevelopmentoftheearthPart1(para1~3)Thedevelopmentoftheearth(1)AftertheBigBang,whathappened?(2)Whathappenedtothesolidglobenext?(3)Whatdidthewatervapourandgasesweretomake?(4)Whatappearedaftertheearthcooleddown?(5)Whatdidthewaterdo?Howdidtheearthcomeintobeing?(1)AftertheBigBang,whathappened?acloudofdustaviolentsolidballSettledintoexplodedwithfireandrockproducedwatervapourandgases(2)Whathappenedtothesolidglobenext?Intime(3)Whatdidthewatervapourandgasesweretomake?theearth’satmosphereWaterappearedonitssurfacewhichisimportantforthebeginningoflifeontheearth.(4)Whatappearedaftertheearthcooleddown?(5)Whatdidthewaterdo?Itallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.acloudof_____BigBangasolid_______slowlycombinetheearth______downitexplodedloudlywith_____and_____watertheearth’s___________dustball/globefirerockatmospherecooledHowdidtheearthcomeintobeing(产生）?Accordingtothepictures,haveatrytoretellthedevelopmentoflife.AcloudofenergeticdustAsolidballAtmosphereAworldfullofwaterdissolveharmfulgasesPart2(4~5)ThedevelopmentoflifePart2(para4~5)ThedevelopmentoflifeReadpara4carefullyandmakeatimelineofthedevelopmentoflifewater1.2.10.3.4.insects(onland)5.6.7._________8.dinosaurs(onland)9._________11.small________inwater_________andallsortsoffishgreenplantsonland___________(onlandandinwater)forests(onland)(onland)smallcleveranimalswith______________plantsshellfishamphibiansreptilesmammalshandsandfeet1.atimelineofthedevelopmentoflifethecleverestanimalsThearrivalof___________encouragedthe____________ofearly________________________.Manymillionsofyearslater__________________begantoappear_________.Later____________appeared.Somewere________.Otherscalled__________,wereabletoliveonlandswellas__________.Whentheplantsgrewintoforests,_________appearedforthefirsttime.Aftertheydisappeared,_________becamemoreimportant.Theywerethelastgroupofanimalsdifferentfrombecausethey_________milkfromwithintheirbodies.developmentshellfishandallsortsoffishonlandlandanimalsamphibiansdinosaursmammalsproducedsmallplantsthefirstgreenplantsinsectsintheseaReadpare5carefully.findouttheanswer.1.Whatproblemiscausedbyhumanbeing?Theycausedglobalwarming.Step5:discussionTheearthisgettingwarmereachyear.whateffectswillthishave?Howtosolvethisproblem?SuggestedAnswers:Theearthwillbesohotthatnolifewillexist（存在）ontheearthanymore.Tosolvethisproblem,peopleshouldprotecttheearthcarefully.Theymuststopputtingtoomuchcarbondioxideintotheair,reducepollution,controlthepopulationandsoon.Weonlyhaveoneearth.Withoutotherlivings,wehumancannotlive.Homework1.Readthepassagemoreafterclass.2.Writeacompositionabouthowtostopglobalwarming.ThankYou
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