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1、高中英语-必修三-unit4-reading-课件中国神话传说中有盘古开天地的说法。巨人盘古用一把利斧劈开混沌,将天地分开。死后,他的气息化成风和云,声音变成轰轰的雷声,左眼化为太阳,右眼化为月亮,手足与四肢变成大地的四极与五方的名山,血液化成江河,筋脉铺成道路,肌肉形成田地,须发成为星星,牙齿和骨骼化为金属、珍珠、玉石,汗水成为滋润万物生长的甘霖和雨露。Wheredowecomefrom?Orwecansay:Whoareourancestors?Doyoureallythinkspaceflightsaremeaningful?
2、Whyistheearththeonlyoneofalltheplanetsonwhichlifecansurvive?CooperativelearningHOWLIFEBEGANONTHEEARTH?ReadingReadingScanning1.Whatwasthereontheearthbeforelifecouldbegin?Watervapour,carbondioxide,oxygen,nitrogenandothergases.2.Whydoscientiststhinktherehasneverbeenlifeon
3、themoon?Becausethereisnowateronthemoon.3.Whydidanimalsfirstappearintheseas?Becausewaterallowedtheearthtodissolveharmfulgasesintotheoceansandseas.4.Whydidgreenplantshelplifetodevelop?Becausegreenplantscantakecarbondioxidefromtheatmosphereandfilltheairwithoxygen.5.Whywer
4、emammalsdifferentfromotheranimals?Theyweredifferentbecausetheyproducedtheiryoungfromwithintheirbodies.Readthepassagequicklyandfindoutthe answerstothequestionsbelow.1.What’sthemainideaofthetext?2.Howmanypartscanthetextbedividedinto?What’sthemainideaforeachpart?1.What’st
5、hemainideaofthetext?Howlifebeganontheearth.2.Howmanypartscanthetextbedividedinto?Twoparts:Part1(para1-2)Part2(para3-5)Watermadeitpossibleforlifebegintodevelop.Thedevelopmentoflivingthings.Para.1Para.2Para.3Para.4Para.5A________abouthowtheuniversewasformedThe__________o
6、ftheearthTheimportanceof______forlifeThe_______________ofplantsandanimalsThearrivalof_________andtheireffectsontheearththeoryformationwaterdevelopmenthumansHowlifebeganontheearthBeforelifeappeared.Differentlivesdeveloped.Fillintheblankswiththeproperwords:Afterthe______
7、__,theearthwasacloudof_____.Laterthedustbeganto_______into_____.Andthenit________loudlywithfireandrock,whichwereintimeto__________thewatervapour,carbondioxide,…whichweretomaketheearth’s____________.Astheearth_______down,_____beganto________onitssurface.Waterhad________
8、_fromplanetsorsatellites,butit_______ontheearth.Thatmadeitpossibleforlifetobeginto________.dustsettleexplodedproducec
