人教版高中英语必修三Unit4Reading课件

1.Tolearnthebasicknowledgeaboutsolarsystem2.Tounderstandthepassageabouthowlifebeganontheearth3.TobeabletogiveabriefintroductionofthedevelopmentoftheEarthandtheevolutionoflifeontheEarth4.Toarousethestudents’interesttoexplorethesciencestarssupermoonthebigbangtheblackholeAstronomyisasciencethatstudiescelestialobjectssuchasplanets,moons,stars,comets,nebulae(星云)&galaxies.SolarSystemWhat’sthis?Doyouknowanythingaboutthesolarsystem?star恒星planet行星Whichisastar?Whichisaplanet?Whatarethenamesoftheeightplanetsthatcirclethesun?海王星Neptune水星Mercury金星Venus地球Earth火星Mars木星Jupiter土星Saturn天王星UranusWhatistheeventualfateoftheSun?Whatdeterminesthesurfacetemperatureofaplanet?Possibleanswers:Whatinterestsyouinastronomy?Doyouknowanyquestionsthatastronomersareinterestedin?Wecanonlydetectabout5%ofthematterintheuniverse.TheSun’scorereleasestheequivalentof100billionnuclearbombseverysecond.Lightfromdistantstarsandgalaxiestakessolongtoreachusthatweareactuallyseeingtheseobjectsastheyappearedinthepast.Shootingstars(流星)reallyaren’tstars.Theyareusuallyjusttinydustparticlesfallingthroughouratmosphere.EventhoughMercuryistheclosestplanettotheSun,temperaturestherecanreach-280degreesFonitssurface.Earthistheonlyplanetnotnamedafteragod.AQuizGame1.Howoldistheearth?A.About3.5billionyearsB.About4.5billionyearsC.About5.5billionyearsD.About6.5billionyears2.______oftheearthsurfaceiscoveredbywater.A.20%B.30%C.50%D.70%Let’sturntotheEarth—theplanetweshouldknowwell.Nowdoaquiztoseehowmuchyouknowaboutourplanet—theEarth.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.November118.Whichoceanisthelargest?A.ThePacificOceanB.TheArcticOceanC.TheIndianOceanD.TheAtlanticOcean9.Whichcountryhasthelargestarea?A.CanadaB.ChinaC.RussiaD.U.S.ATheoriginoflifeonearthisaquestionthatinterestsastronomers.Whatdoyouknowaboutit?Eachreligionandculturehasitsownideasabouthowlifebeganonearth.Whatdoyouknow?Panguseparatestheskyfromtheearth.Nvwamadehumans.TheBiblicalAccountDay1:GodspokeandseparatedlightfromdarknesscreatingDayandNight.Day2:Godspokeandseparatedthewatercreatingskyandocean.Day3:Godspokeandcreateddryland.Day4:Godspokeandcreatedthesun,moonandstars.Day5:Godspokeandcreatedlivingcreaturesintheairandsea.Day6:Godspokeandcreatedthelandanimalsandman.Day7:GodrestedandblessedthisdaycallingitHoly.Brahma—theHindugodofcreationHeisthecreatoroftheuniverseandalllivingbeingsaresaidtohaveevolvedfromhim.Lookatthepictures.Doyouknowthetopicofthisunit?volcaniceruption(火山喷发)timeline古生代新生代中生代TheEvolutionofLifeontheEarth海洋里的细胞开始分裂登陆爬行动物恐龙哺乳动物人类的兴起ThedevelopmentoflifeReadthetextquicklyandfillintheblanks.Thetextmainlytellsustheformationofthe________andthedevelopmentof______onit.earthlifeAnalysethestructureofthepassage.Writedownthemainideaforeachparagraph.Paragraph1:AwidelyacceptedtheoryabouttheformationoftheuniverseParagraph2:TheformationoftheearthParagraph3:TheimportanceofwaterforlifeParagraph4:ThedevelopmentofplantsandanimalsontheearthParagraph5:ThearrivalofhumansandtheirimpactontheearthPuttheorderofdevelopmentoflifeintoatimeline.Usethereadingpassagetohelpyou.123456789101112Fillintheblanksinthefollowingform.TimeWhathappenedBigBang______begantoformandcombinetocreatestarsandotherbodies.AtomsBetween4.5and3.8billionyearsago☆Dustsettledintoasolidand______globe.☆Theearthexplodedtoproduceits__________.☆Thecontinued________ofwaterallowedtheearthtodissolveharmfulgasesand_____intotheoceansandseas.violentatmospherepresenceacidsManymillionsofyearslater☆Thefirstsmallplantsonthesurfaceofthewaterproduced_______.☆Early________andallsortsoffishappeared.☆Greenplantsbegantogrowonland.☆Insectsand___________appeared.oxygenshellfishamphibiansManymillionsofyearslater☆________appearedandtheylaideggs.☆Dinosaursdeveloped,laideggsand_______formorethan140millionyears.☆Mammalsroseand____________babies.ReptilesexistedgavebirthtoAbout2.6millionyearsagoSomesmall______animalswithhandsandfeetappearedandspreadallovertheearth.NowHumansproducetoomuchcarbon_______,makingtheearthtoohot.cleverdioxide1.Theearthwasintheshapeofacloudofdustbeforethe“BigBang”.2.Carbondioxide,nitrogen,watervapourandothergasesformedtheearth’satmosphere.3.Theharmfulgasesandacidscamefromtheoceans.ReadthetextanddecidewhetherthefollowingstatementsareTrue(T)orFalse(F).FTF4.Mammalsgavebirthtoyoungbabiesandproducedmilkforthem.5.Lifeontheearthhasnothingtodowithhowpeoplelookafterit.TF1.Whendidthe“BigBang”happen?Ithappenedseveralbillionyearsago.2.Whatformwastheearthafterthe“BigBang”?Theearthwasstilljustacloudofdust.Readthepassageandanswerthequestions.3.Whatmadeuptheearth’satmosphereaftertheearthexploded?Carbondioxide,nitrogen,watervapourandothergases.4.Howdidwatercomeintobeingontheearth?Astheearthcooleddownafteritexploded,watercameintobeing.5.What’sth