新课标人教版必修三Book3 Unit4 reading

•重点单词•1．n．天文学→n．天文学家2．n．系统；体系；制度•3．n．学说；理论→theoreticaladj.理论上的4．n．球体；地球仪；地球→adj.全球性的；全世界的•5．adj.猛烈的；强暴的→n．暴力→adv.猛烈地6．___n．大气层；气氛7．prep.不同；不像→vt.不喜欢8．n．出席；到场；存在→adj.&n.&v．在场的；目前，现在；出席；颁发，授予astronomyastronomersystemtheoryglobeglobalviolentviolenceviolentlyatmosphereunlikedislikepresencepresent•9．adj.有害的伤害的→n．危害害处→adj.无害的•10．vi.存在，生存→n．存在，生存11．n．谜；难题vt.&vi.(使)迷惑；(使)为难→adj.迷惑的→adj.令人迷惑的harmfulharmlessharmexistexistencepuzzlepuzzledpuzzling•重点短语1．及时；终于•2．下蛋3．产生；分娩•4．轮到某人；接着5．阻止；制止•6．挡住(光线)7．感到高兴；感到振奋•8．既然9．突发；爆发intimelayeggsgivebirthtoInone’sturnprevent….fromblockoutcheerupnowthatbreakoutReadingHOWLIFEBEGANONTHEEARTHDoyouknowhowmanyplanetsinoursolarsystem?Whatarethey?海王星Saturn水星Uranus金星Venus地球Earth火星Mars木星Mercury土星Jupiter天王星NeptunePre-reading1.Nearlyeverybodyhasthisorthatpuzzles:Howdohumanbeingscomeintobeing?Howdoestheearthcomeintobeing?2.InChina,therearetwolegendsaboutthesepuzzles.Doyouknowthenames?盘古开天辟地女娲补天造人3.Inthewesternculture,whocreateseverythingintheworld?•Learningaims:•Tolearntheimportantwordsandexpressions.•Toimprovelisteningskillsandreadingability.•Toarouseinteresttosearchforthespace.Para.1Theformation(形成)oftheearth.Para.2Theimportanceofwaterforlife.Para.3Awidelyacceptedtheoryabouttheformationoftheuniverse.Para.4Thearrivalofhumansandtheirimpactontheearth.Para.5Thedevelopmentofplantsandanimalsontheearth.FastReading:Q1:Matchthemainideawitheachparagraph.•Q2:Accordingtotheoriginoflife,wecandividethewholepassageintotwostages.Pleasegetthemainideaofeachstage.•Stage1(para.1to3)Thedevelopmentofthe________•Stage2(para.4to5)Thedevelopmentof______ontheearth.earthlife•Step2:CarefulreadingTask1.Readstage1andfinishthefollowingquestions.Q1:Howdidtheuniversebegin?Theuniversebeganwitha“bigBang”thatthrewmatterinalldirection.Q2：What’sthesignificanceofthepresenceofwaterontheearth?Itallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.3.Fillintheblanksinthefollowingform.TimeWhathappenedBigBang______begantoformandcombinetocreatestarsandotherbodies.AtomsBetween4.5and3.8billionyearsago●Dustsettledintoasolidand______globe.●Theearthexplodedtoproduceits___________.●Thecontinued________ofwaterallowedtheearthtodissolveharmfulgasesand_____intotheoceansandseas.violentatmospherepresenceacids1.Smallplantsinwater2____________________3.Greenplantsonland456.forests7.reptiles8910shellfishandallsortsoffishinsectsamphibiansmammalsdinosaurshumansplantsanimalsTask2:Readthestage2andfillintheblanks.Manymillionsofyearslater●________appearedandtheylaideggs.●Dinosaursdeveloped,laideggsand_______formorethan140millionyears.●Mammalsroseand____________babies.ReptilesexistedgavebirthtoTask3:FinishtheformAbout2.6millionyearsago●Somesmall______animalswithhandsandfeetappearedandspreadallovertheearth.NowHumansproducetoomuchcarbon_______,makingtheearthtoohot.cleverdioxide•Summary•HowlifebeganontheearthThedevelopmentoftheearth:Theearthwasjustacloudofdustwhosefutureis_______afterthe“BigBang”.Thenthewentthroughaseriesofreactions,afterwhichwater________.Andpeoplethinkitisimportantforthebeginningoflife.Itallowedtheearthtodissolve________gases.Thenlifebegantodevelop.uncertainappearedharmful•Thedevelopmentoflife:Smallplantswerethestartofchanges.They_______andfilledtheoceansandseaswith_______whichencouragedthe_______ofearlyshellfishandfish.Landanimalssuchasinsects,amphibians,reptilesanddinosaursandsoon________afterthefirstgreenplantsappeared.Buttheydidn’t______longontheearthfortoolong.Thendinosaursdisappeared,whichmadepossiblethe_______ofmammalsontheearth.Thensmallcleveranimals____________allovertheearth.multipliedoxygendevelopmentexistriseappearedandspreadfollowed•Thefutureoftheearth:Andhumanbeingsputtoomuchcarbondioxideintothe________,which______heat______escapingfromtheearthintospace.Asaresult,theproblemof________occurs.Whetherlifewillcontinueontheearthformillionofyearstocomewill________whetherthisproblemcanbesolved.atmospherepreventsfromhotdependon