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Unit4,Astronomy,thescienceofthestars,Whatareinthepictures?,Mercury,Venus,Earth,Mars,Jupiter,Uranus,Saturn,Neptune,Doyouknowtheirorigin?,Doyouknowthecorrectorderoftheirdistancetothesun?,nearesttothesun?,farthesttothesun?,Whatinterestsyouinastronomy?,Quiz(测验）:,1.WhowrotethebookTheOriginofSpecies(物种起源)?A.IssaacNewtonB.AlbertEinsteinC.CharlesDarwin,2、HowmanybigplanetsarethereintheSolarSystem?A.7B.8C.9,3.Whichonebelongstoamphibian(两栖动物）?A.frogB.snakeC.dinosaur,4.WhoisfamousforthetheoryofBlackHoletheory?A.HawkingB.NewtonC.Einstein,5.Whichonebelongstoreptile（爬行动物）?A.fishB.snakeC.bird,8.Onwhichplanetaretherelivesatpresent?A.theVenusB.theEarthC.theMars,7.Whichgasisthemostimportantforlife?A.carbondioxide(CO2)B.oxygen(O2)C.nitrogen(N2),6.Whichonebelongstomammal（哺乳动物）?A.dinosaurB.dogC.fish,Whatsthemeaningoftheword“Astronomy”?,I.Warmingup,thescienceofstars;thescientificstudyofstarsandplanets.,2.Whatwordswillyouthinkofwhenwetalkaboutthistopic?,star,planet,thesun/moon/earth,solarsystem,恒星行星太阳月球地球太阳系,3.Howmanyplanetsareinthesolarsystem?,8,Pluto,ScientistsnowthinkPlutoistoosmalltobecalledaplanet.,II.Pre-reading,Haveyoueveraskedyourmother,“Mom,wheredoIcomefrom”?,2.Nearlyeverybodyhasthisorthatpuzzles:Howdohumanbeingscomeintobeing?Howdoestheearthcomeintobeing?,3.InChina,therearetwolegends（传说）aboutthesepuzzles.Doyouknowthenames?,盘古开天辟地女娲补天造人,4.Inthewesternculture,whocreateseverythingintheworld?,TheGod,III.Fast-reading,Doyoubelieveinsuchstories?Aretheybasedonscience?,2.Inthisunit,welllearnsomethingmorescientific.3.Whatsthetitleofthetext?,4.Fromthetitle,wecanpredictthatthetextmaytellustheoriginoflifeontheearth.,Howlifebeganontheearth,5.Whichquestionareyouinterestedininthistext?,1)Howoldistheearth?2)Howdoestheuniversebegin?3)IsthereanywaterintheMars?4)Whendiddinosaursdisappear?5)Whichanimalisthemostimportantoneontheearth?,Para.4,Para.2,Para.3,Para.5,Para.1,6.Concludethemainideaofeachparagraph.1)Awidely_aboutthe_oftheuniverse.2)Theformationofthe_.3)The_ofwaterforlife.4)Thedevelopmentof_and_ontheearth.5)Thearrivalof_andtheir_ontheearth.,theory,origin,earth,importance,plants,animals,humans,influence/effect,Paragraph1:,1.Awidelyacceptedtheorywasputupwith.Whatisit?,Theuniversebeganwitha“BigBang”thatthrewmatterinalldirections.Afterthat,atomsbegantoformandcombinetocreatestars.,A.Theearthsatmospherewasformed,B.BigBang,C.Theearthexplodedandproducedkindsofgases,D.Waterappeared,E.Theearthcooleddown,F.Acloudofenergeticdust,G.Slowlycombineintoasolidglobe,1,2,3,4,5,6,7,Paragraph2:Putthesesentencesintotherightorder.,Paragraph3:,Whatdoes“Dissolve”mean?,“溶解”,Whichthefollowingstatementsistrue?A.Unliketheearth,Marshaddisappearedlater.B.Waterwastobefundamentaltothedevelopmentoflifeoncewaterturnedup.C.Thecontinuedpresenceofwaterallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.D.Watermadeitpossibleforlifetodevelop.,water,Plantsinthewater,Shellfishandfish,Insectsandamphibians,Reptiles,Dinosaurs,Mammals,Plantsonland,DetailedreadingThistextcanmainlydividedintotwostages,Stage1:ThedevelopmentoftheearthStage2:Thedevelopmentoflife,(para13),(para45),Stage1:Thedevelopmentoftheearth,(1)AftertheBigBang,whatwastheearthlike?,acloudofdust,asolidglobe,explodedwithfireandrock,producedwatervapourandgases,(2)Whathappenednext?,(3)Whatdidthewatervapourandgasesform?,theearthsatmosphere,Waterappeared,(4)Whatappearedastheearthcooleddown?,waterisimportantforthebeginningoflifeontheearth.,Whyiswatersoimportantforthebeginningoflife?Becausewaterallowedtheearthtodissolveharmfulgasesintooceansandseas.,？,Stage2Thedevelopmentoflife,smallplantsappearsinwater,1.Whatlifedevelopedafterwaterappeared?,Shellfishandallsortsoffish,2.Whatlifedevelopedinwaternext?,greenplantsbegantogrowonland,insectsappeared,3.Whataboutthelifeonland?,amphibiansonlandandinthewater,forests,4.Whatlifedevelopednextonland?,reptilesappeared,dinosaurdeveloped,5.Whatlifedevelopedafterforestsappeared?,mammalsonland,6.Whatlifedevelopedafterdinosaurs?,smallcleveranimals,7.Whatlifedevelopedaftermammals?,1.Whoarethesmallcleveranimalswithhandsandfeet?2.Aretheytakingcareoftheearthwell?Why?,?,Becausetheyareputtingtoomuchcarbondioxideintotheatmosphere,whichpreventsheatfromescapingfromtheearthintospace.,Theearthmaybecometoohottoliveon.,1.Insectsandamphibiansappeared.3.Theearthbecameasolidball.5.Reptilesappeared.7.Theearthwasacloudofdust9.Shellfishandotherfishappeared.11.Cleveranimalswithhandsandfeetappeared,2.Dinosaursappeared.4.Smallplantsgrewonthewater.6.Plantsbegantogrowondryland.8.Waterappearedontheearth10.Theuniversebeganwitha“BigBand”.12.Mammalsappeared.,8,3,10,9,11,5,1,7,4,12,6,2,Canyouputtheorderofdevelopmentoflifeintoatimeline?,Ex.2onP27,Ex.2onP27,Howlifebeganonearthisoneofthebiggestpuzzlesthatscientistsfoundhardtosolve.Whatotherpuzzlesarehiddeninthepassage?,Discussion,Ex.5onP27,Howdoestheuniverse(earth)form?Whydidtheearthcooldown?Whydidwaterdisappearonotherplanet?Howdidthedinosaurdisappear?,summary,Afterthe“bigbang”,theearthwasstilljustacloudof_,it_loudlywithfireandrock,whichwere_toproducethe_,watervapourandothergases.Then_begantoappearedontheearth.,dust,exploded,intime,carbon,water,_inwaterareconsideredtobetheearliestlivesontheearth.TheO2theysuppliedencouragedthelivesof_.Slowlygreenplantsgrewonland,whichwerefollowedby_likeinsectsonlyifwehelpshallallbesaved!,
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