unit-4-astronomy--the-science-of-the-stars-warming

Unit4Astronomy:thescienceofthestarsAstronomyisthescientificstudyoftheuniverseandtheheavenbodies(suchasthesun,themoon,andstars),gas,anddustwithinit.astronomerThegalaxyTheSolarsystem•eightplanets•manycomets•otherobjectsA.水星______B.金星______C.地球______D.火星_____E.木星_______F.土星_______G.天王星________H.海王星_______I.冥王星________EarthJupiterMarsMercuryNeptunePlutoSaturnUranusVenustheearthHOWLIFEBEGANONTHEEARTH?PanguseparatestheskyfromtheearthNuwamakeshumanbeingsTheBigBangEnergeticdustAsolidballExplodeatmospherewaterWatermadeitpossible________________________forlifetobegintodevelop.Plantsencouragedthedevelopmentof_____________________________.earlyshellfishandallsortsoffishLater_____________appeared.landanimalsinsectsamphibiansWhenplantsgrewintoforests,______appearedforthefirsttime.reptilesSomehugeanimals,called_________,developed.dinosaursWhendinosaursdisappeared,_________becamemoreimportant.mammalsAcloudofdust→asolidball→presenceofwater→onthewater→shellfish&otherfish→plantsbegintogrowondryland→insectsandamphibiansappear→retilesappear→dinosaursappear→mammalsappearThedevelopmentoflifesmallplantsgrowonthewaterappearshellfish&otherfishplantsbegintogrowondrylandinsectsandamphibiansappearretilesappeardinosaursappearmammalsappearAsastudent,whatlittlethingscanwedofortheearth?Whetherlifewillcontinueontheearthdependsonhumanbeings.Onlyifwecarewillwehelp,onlyifwehelpshallallbesaved!1）根据2）以…开始3）沿各个方向,四面八方.4）猛烈的adj5）爆炸v6）及时7）气氛,大气8）冷却，冷静9）…是很明显的10)是……的基础11)允许……做…..12)连锁反应13)第一次14)下蛋15)存在vi/开始存在,成立16)依然是谜17)在地球上/究竟，到底18)与…..不同19)生产….,产生…20)扩散，蔓延v（L46)21)轮到….接着22)阻止….做…..23)依靠，取决于24）有害的Revision:Para1:1)accordingto2)beginwith3)inalldirectionsPara2:4）violent5)explode6)intime7)atmosphere8)cooldownPara3:9)Itisobviousthat10)befundamentalto11)allowsb/sthtodo12)achainreactionPara4:13)forthefirsttime/thefirsttime+时间状语从句14)layeggs15)exist/comeintoexistence16)remainamystery17)ontheearth/onearth18)bedifferentfrom19)givebirthtoPara5:20)spread（L46）21)inone’sturn22)prevent…from…23)dependon