人教版必修三unit4 reading.ppt

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1、Unit4Astronomy:thescienceofthestars人教版英语必修三unit4编者：内蒙古巴彦淖尔市奋斗中学英语组贾魏巍天文学天文学家太阳系原子猛烈的；激烈的二氧化碳大气层连锁反应氧气水生有壳动物两栖动物恐龙哺乳动物AstronomyAstronomerSolarsystemAtomViolentCarbondioxideChainreactionAmphibianOxygenmammalDinosaurShellfishAtmospherenewwordsTheSolarsystemeightplanetsmanycometsotherobje

2、ctsWarmingUpThereusedtobenineplanetsinthesolarsystem.Recentlyscientistshavedecidedthatoneofthemcannolongerbeconsideredaplanet.Doyouknowthenameofthatplanet?Doyouknowwhytheyremovedit?Pluto.Scientistsnowthinkitistoosmalltobecalledaplanet.PlutosunMercuryVenusEarthMarsJupiterSaturnUranusNe

3、ptunePluto水星金星火星木星土星天王星海王星冥王星TheSolarsystemEachreligionandculturehasitsownideasabouthowlifebeganonearth.Whatdoyouknow?Pre-readingInchina,PanguseparatedtheskyfromtheearthTheGoddessNvwamendedtheheavenandcreatedhumanbeings.Inchina：Inothercountries：TheHolyBiblesaysthattheGodcreatedtheworl

4、dandthehumanbeingsInIndia：Brahma(梵天)isthecreator(创造者)oftheuniverseandalllivingbeings（生物）▲BigBangWaterAirsunWateristheheadspring(源泉)oflife.?Whatisthemostimportantthingforalltypesoflifeontheearth?HowLifeBeganontheEarthPara.1Theformation(形成)oftheearth.Para.2Theimportanceofwaterforlife.Pa

5、ra.3Awidelyacceptedtheoryabouttheformationoftheuniverse.Para.4Thearrivalofhumansandtheirimpactontheearth.Para.5Thedevelopmentofplantsandanimalsontheearth.skimminglistentothetapeandmatchthemainideaofeachparagraph1073849615212111.Insectsandamphibiansappeared.3.Theearthbecameasolidball.5

6、.Reptilesappeared.7.Theearthwasacloudofdust.9.Shellfishandotherfishappeared.11.Cleveranimalswithhandsandfeetappeared.2.Dinosaursappeared.4.Smallplantsgrewonthewater.6.Plantsbegantogrowondryland.8.Waterappearedontheearth.10.Theuniversebeganwitha"BigBang".12.Mammalsappeared.scanningread

7、ingfordetailsTimeWhathappenedBigBang______begantoformandcombinetocreate_____andother________.Readthetextandfillintheblanksinthefollowingform.AtomsstarsbodiesQuestionsforPar.1:Whywastheearthdifferentfromotherplanets?Aitproducedalotofheat.B.Thewaterremained.CWaterdisappeared.D.Itwastheo

8、ldest