湖北省黄石市第二中学人教版高中英语必修三课件Unit4AstronomythescienceofthestarsWarmingupandReading

WarmingupandReadingIUnit4Astronomy:thescienceofthestarsExercisesonthebook—TheNewCourseforEnglishAstronomy

isthescientificstudyoftheuniverseandtheheavenbodies(suchasthesun,themoon,andstars),gas,anddustwithinit.astronomer

地球______

木星______

火星______

水星________

海王星_______F.土星________G.天王星_______H.金星________EarthJupiterMarsMercury['mɝkjəri]Neptune[ˈneptju:n]Saturn'sæt(ə)nUranusˈjʊərənəsVenus['viːnəs]TheSolarSystemCanyounametheeightplanets(行星)?Let’sturntotheEarth—theplanetweshouldknowwell.Nowdoaquiztoseehowmuchyouknowaboutourplanet—theEarth.AQuizGame1.Howoldistheearth?A.About3.5billionyearsB.About4.5billionyearsC.About5.5billionyearsD.About6.5billionyears2.______oftheearthsurfaceiscoveredbywater.A.20%B.30%C.50%D.70%3.HowmanyplanetsarethereintheSolarSystem?A.6B.7C.8D.94.Whatisthetotalpopulationofhumansontheearth?A.About3.5billionB.About4.5billionC.About5.5billionD.About6.5billion5.Howlongdoestherotation(自转)oftheearthtake?A.12hoursB.24hoursC.amonthD.365days6.Whichcontinentisthesmallest?A.AfricaB.NorthAmericaC.SouthAmericaD.Oceania7.OnwhatdayistheEarthdaycelebrated?A.April22B.May4C.August21D.November11Readthetextquicklyandfillintheblanks.

Thetextmainlytellsustheformationaboutthe________andthedevelopmentof______onit.earth

lifeDetailedReadingHowlifesbeginontheearth?Stage1:ThedevelopmentoftheearthStage2:ThedevelopmentoflifeinwaterStage3:ThedevelopmentoflifeonlandStage1:Thedevelopmentoftheearth(1)AftertheBigBang,whathappened?acloudofdustaviolentsolidballexplodedwithfireandrockproducedwatervapourandgases(2)Whathappenednext?Waterappearedwhichisimportantforthebeginningoflifeontheearth.Whatlifedevelopedafterwaterappeared?Stage2:Thedevelopmentoflifeinwatersmallplantsinwaterallsortsoffish(2)Whatlifedevelopedinwaternext?Earlyshellfishgreenplantsonlandinsectsonland(3)Whatlifedevelopedafterthelifeinwater?amphibiansonlandandinthewaterforestsStage3:Thedevelopmentoflifeonland(1)Whatlifedevelopednextonland?reptilesonlanddinosaursonland(2)Whatlifedevelopedafterforestsappeared?mammalsonland(3)Whatlifedevelopedafterdinosaurs?advancedmammals(4)Whatlifedevelopedaftermammals?TheBigBangwaterSmallplantsinsectsandamphibianslandonReptilesonlandmammalsadvancedmammalsdinosaursTrue(T)orFalse(F).1.TheearthappearedbeforetheBigBanghappened.2.Theoriginalatmosphereconsistedof(由…组成）nitrogenandoxygen.3.Themaindifferencebetweentheearthandotherplanetsisthatthereiswaterontheearth.4.Lifebeganinwaterandthenonland.FFTT5.Mammalsappearedbeforethedevelopmentofdinosaurs.6.Dinosaurscouldgivebirthtoyoungbabyanimalsandproducedmilktofeedthem.7.Humanbeingsproducetoomuch