人教版高中英语必修三Unit4warmingreading.ppt

Unit4:Astronomy:thescienceofstars,telescope,astronomers,TheMilkyWaygalaxy,1.Alllivingthingsdependon_forlife.2.Asfaraswecansee,the_istheonlyplanetsuitableforlifetodevelop.Itsabout_yearsold.3.Thesunisabout_thesizeoftheearth.4._iswhatmakeslifepossible.5.Wheredidlifefirstbegin?Onthelandorintheocean?6.Whichappearfirst?Plantsoranimals?7.HowmanyplanetsarethereintheSolarSystem?A.6B.7C.8D.98.OnwhatdayistheEarthDaycelebrated?A.April22B.May4C.August21D.November11,thesun,FreeTalk,earth,Water,49,4.5billion,水星,金星,地球,火星,木星,土星,天王星,海王星,Didanasteroid（小行星）killthedinosaursandcouldanotherkillus?,Howdidlifebeginonearth?,InChineseculture:,Panguseparatedtheskyandtheearth;Nvwamadehumanbeingswithclay(黏土).,Howdidlifebeginonearth?,InIndianculture:,Brahman(婆罗门)isthecreatoroftheuniverseandalllivingbeingsaresaidtohaveevolvedfromhim.,Howdidlifebeginonearth?,InWesternculture:,Godcreatedtheworldin7days.Onthe6thday,hecreatedhumans:AdamandEve,Allbeganwitha“BigBang”(大爆炸),Howdidlifebeginonearth?,Accordingtoawidelyacceptedtheory,ReadingHOWLIFEBEGANONTHEEARTH,universe,formation,earth,formation,importance,water,development,plants,animals,humans,arrival,influence,Developmentoflife,Developmentofearth,-whichmakesitpossibleforlifetodevelop,Developmentofearth:,Developmentoflife:P4-5,1.Afterwaterappeared_appearedonthesurfaceofthewater,whichencouragedthedevelopmentof_,smallplants,shellfishandallsortsoffish,2.Next,_begantogrowonlandaswellaslandanimals-insectsand_,whichcanlivebothonlandandinthewater.,greenplants,amphibians,3.Later,whenplantsgrewintoforests,_appearedforthefirsttime.Somehugeanimals,called_,developed,theyproducedyoungbylayingeggs.,reptiles,dinosaurs,About65millionyearsago,dinosaursdisappeared,afterthat,_becamemoreimportant.,mammals,cameintobeingandspreadallovertheworld.,Whatlifedevelopedaftermammals?,Humans,Theydevelopednewmethodsofgrowingfood,huntingandmovingaround.Astimewentbytheycoveredtheearthandhavebecomethemostimportantanimalsontheplanet.,Accordingtothepictures,haveatrytoretellthedevelopmentoflife.,Theearthwasjustacloudofdustwhosefutureis_afterthe“BigBang”.Thenthedustbegantosettleintoa_ballwhichisso_and_loudlywithfireandrock,tobeintimetoproducemanythings,whichmadetheearths_.Astheearthcooleddown,_begantoappearandpeoplethinkitisimportantforthebeginningoflife.Itallowedtheearthtodissolve_gases.Thenlifebegantodevelop.,uncertain,solid,violent,exploded,atmosphere,water,harmful,Ifeltlonelyandlifewasdullatthattime.,Nobodyunderstoodplantswerethestartofchanges.They_andfilledthefirstoceansandseaswithoxygen.Thisencouragedthe_ofearlyshellfishandfish.Landanimalssuchasinsects,amphibians,reptilesanddinosaursandsoon_afterthefirstgreenplantsappeared.Dinosaursdisappeared,whichmadepossibletheriseof_ontheearth.Thensmallcleveranimals_allovertheearth.,multiplied,development,spread,Withsomanyfriendsonme,Iwashappy.,followed,mammals,Humansdevelopednew_ofgrowing,huntingandmovingaround.Astimewentbytheycoveredtheearth.Now_carbondioxidehasbeenputtingintothe_,which_heat_escapingfromtheearthintospace.Asaresult,theproblemof_occurs.Whetherlifewillcontinueontheearthformillionsofyearstocomewill_whetherthisproblemcanbesolved.,means,from,prevents,Now,Imworriedaboutthefutureofmyselfandhumans,dependon,toomuch,atmosphere,globalwarming,Theyaremakingtheworldbetter.,Theyaremakingtheworldworse.,A,B,Discussion,Asastudent,whatlittlethingscanwedofortheearth?,topreventtheearthfromgettinghotterandhottertoslowdowntheproblemgettingworse,solarenergy,planttrees,recyclerubbish,preventdesertification,savewater,purifyair,Whatcanwedotakecareoftheearth?,Manhasbutoneearth!,Tosavetheearthistosavemanhimself!,our,home,P1:Awidelyacceptedtheoryabouttheformationoftheuniverse,Nooneknows,as.solongago.AccordingtoawidelyacceptedtheorybeginwithinalldirectionsAfterthat,atoms.formandcombineto,P2:Theformationoftheearth,Forseveralbillionyearsaftertheearth.acloudofdustBetween4.5and3.8billionyearsagosettleintoasolidglobesoviolentthatexplodewithintimetoproducewhichweretomakeAscooldown,.appearonitssurface,P3:Watersimportance,butdisappearonotherplanetslikemarsItwasnotimmediatelyobviousthatbefundamentalto.WhatmanyscientistsbelieveisthatallowedtheearthtodissolveharmfulgasesandacidintoAchainreaction,which.,P4:Thedevelopmentofplantsandanimalsontheearth,Manymillionofyearslater,thefirstextremelysmallplants.whichencouraged.Next,greenplants.onland,followedby.Laterwhentheplantsgrewintoforests,.forthefirsttime.AfterthatLayeggs/existfor140millionyearsHowever,.Whytheysuddenlydisappearedmadepossible.mammalsGducemilktofeed.,P5:Thearrivalofhumansandtheirimpactontheearth,Finallyabout2.6millionyearsagosomesmallcleveranimalsallovertheearthThus.themostimportantanimalsBut.puttoomuchcarbondioxideintowhichpreventsfrom.Asaresultofthis,toohottoliveonSowhetherlifewillcontinueontheearthformillionofyearstocomewilldependon,HomeworkCollectmoreinformationaboutthedevelopmentoflifeandmakeaposterwithyourgroupmembers.2.Readandretellthepassagetolearntheimportantanddifficultlanguagepoints.,AstheresultofBigBang,theviolentearthslowlysettledintoaglobe_1_aroundthesun.Thegaseswhichweretomaketheearths2_cameintobeingfromtheexplosionofthedustball,withwater3(follow)themwhiletheearthcooleddown.Itallowedthebeginningforlife.Manymillionsofyears4,thefirst5(极度的)smallplantsbegantoappear6thesurfaceofthewater,7(繁殖)andfillingtheseaandoceans,moving,atmosphere,following,later,extremely,on,multiplying,whichencouragedthelaterdevelopmentofearlyshellf