最新最终Unit4How-life-began-on-the-earth阅读课件幻灯片.ppt

《最新最终Unit4How-life-began-on-the-earth阅读课件幻灯片.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、最终Unit4How-life-began-on-the-earth阅读课件Pangu__________theskyfromtheearth.盘古开天辟地Saying1separated女娲补天Nuwamendedtheheavenand_________humanbeings.Saying2created1.Whatdoesthetexttellus?HowtheearthcomeintobeingTheproblemoftheearthcausedbyhumanbeingHowthehumanb

2、eingbuildtheearthHowthelifedevelopedontheearthTask1FastreadingReadthepassagequicklyandfindouttheanswerstothequestionsbelow.Task1skimming2.Howdidtheuniversebeginaccordingtoawidelyacceptedtheory?TheuniversebeganwithaBigBang.Task1FastreadingTask1skimmingWh

3、at’sthemainideaforeachPara?Para.1Para.2Para.3Para.4Para.5AtheoryabouthowtheuniversebeganThearrivalofhumansandtheirimpact（影响）ontheearthTheimportanceofwaterforlifeThedevelopmentofplantsandanimalsontheearthTheformation(形成)ofatmosphereandwateronearthTask2ca

4、refulreadingTobehonest,noneofusknowshowtheearthbeganbecauseithappenedtoolongago.TrueJudgeTrueorFalsePara.1Task3CarefulreadingPara.1HowdidtheBigBangcreatetheuniverse?Firstofall,it_____matterinall_________.Afterthat,______beganto________.Then,atoms______t

5、ocreate_____and___________.threwdirectionsatomsformcombinedstarsotherbodiesPara.21.Whatistheoriginalearth’satmospheremadeupof?carbon,nitrogen,watervapour,andothergasesTheoriginoflifeontheearthisaninterestingquestion.Itwasawidelyaccepted________thattheun

6、iversebeganwitha“BigBang”,afterwhichtheearthwas_________________.Between4.5and3.8billionyearsagoitsettledintoasolid______.Theearthwasvery_______andexplodedloudlywithfireandrock.theywereintimetoproducecarbon,nitrogen,watervaporandothergases,whichweretoma

7、ketheearth’s_____________.Thenastheearthcooleddown,waterappeared.theoryacloudofdustglobeviolentatmosphereFillintheblanks:Para.21.Whatmakestheearthdifferentfromtheotherplanetsinthesolarsystem?A.Itproducedalotofheat.B.C.Waterdisappeared.D.Itwastheoldestpl

8、anet.ThecontinuedpresenceofwaterPara.32.Howdidwaterhelplifedevelop?Waterallowedtheearthto__________harmfulgasesandacidsintotheoceansandseas,producinga_______________.dissolvechainreactionPara.31.insects2.plants3.reptiles（爬行类）4.sh