Unit4thescienceofthestars盘古开天辟地女娲补天造人4.Inthewesternculture,whocreateseverythingintheworld?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UranusWhatarethenamesoftheeightplanetsthatcirclethesun?ScientistsnowthinkPlutoistoosmalltobecalledaplanet.1.What’sthemeaningoftheword“Astronomy”?thescienceofstars;thescientificstudyofstarsandplanets.2.Inthisunit,we’lllearnsomethingmorescientific.What’sthetitleofthetext?theoriginoflifeontheearth.一、单词拼写根据读音、性和词义写出下列单词。1.astronomy2.atmosphere3.violent4.explode5.system6.harmful7.development8.globe9.depend10.existn.天文学n.大气层adj.猛烈的vt.&vi.使爆发n.系统adj.有害的n.发展n.球体；地球仪；地球vi.依靠n.vi.存在二、词组互译将下列词组或短语译成中文或英语。1.cooldown_________________3.givebirthto_________________4.dieout_________________5.inone’sturn_________________6.及时_________________8.依靠_________________7.结果_________________2.阻止；制止_________________intime冷却prevent…from灭绝轮到某人；接着产生；分娩asaresultofdependonPara.1Theformation(形成)oftheearth.Para.2Theimportanceofwaterforlife.Para.3Awidelyacceptedtheoryabouttheformationoftheuniverse.Para.4Thearrivalofhumansandtheirimpactontheearth.Para.5Thedevelopmentofplantsandanimalsontheearth.I.Readthepassagequicklyandmatchthemainideawitheachparagraph.FastreadingFastreadingI.Fillintheblanksinthefollowingform.TimeWhathappenedBigBang______begantoformandcombinetocreatestarsandotherbodies.AtomsCarefulreadingParagraph.1.Paragraph.2.3.Severalbillionyearsafterthe“BigBang”(Between4.5and3.8billionyearsago)●Dustsettledintoasolidand______globe.●Theearthexplodedtoproduceits___________.●Thecontinued________ofwaterallowedtheearthtodissolveharmfulgasesand_____intotheoceansandseas.violentatmospherepresenceacidsParagraph.4.Manymillionsofyearslater●Thefirstsmallplantsmultipliedandfilledtheoceansandseaswith______.●Early________andallsortsoffishappeared.●Greenplantsbegantogrowonland.●Insectsand_________appeared.oxygenshellfishamphibiansParagraph.4.Manymillionsofyearslater●________appearedandtheylaideggs.●Dinosaursdeveloped,laideggsand_______formorethan140millionyears.●Mammalsroseand____________youngbabyanimalsandproducedmilktofeedthem.ReptilesexistedgavebirthtoAbout2.6millionyearsago●Somesmall______animalswithhandsandfeetappearedandspreadallovertheearth.NowHumansproducetoomuchcarbon_______,makingtheearthtoohot.cleverdioxideParagraph.5.2.(1).Whatdoes“Dissolve”inparagraph3mean?“溶解”(ofasolid)tobeabsorbedbyaliquid,especiallywhenmixed.)A.Theearth’satmospherewasformedB.BigBangC.TheearthexplodedandproducedkindsofgasesD.WaterappearedE.TheearthcooleddownF.AcloudofenergeticdustG.Slowlycombineintoasolidglobe1234567(2).Paragraph2:Putthesesentencesintotherightorder.(3).Whichthefollowingstatementsistrue?A.Unliketheearth,Marshaddisappearedlater.B.Waterwastobefundamentaltothedevelopmentoflifeoncewaterturnedup.C.Thecontinuedpresenceofwaterallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.D.Watermadeitpossibleforlifetodevelop.waterPlantsinthewaterShellfishandfishInsectsandamphibiansReptilesDinosaursMammalsPlantsonland(4).Reviewhowlifebegan.summary•Afterthe“bigbang”,theearthwasstilljustacloudof_______,it_______loudlywithfireandrock,whichwere_____toproducethe_________,watervapourandothergases.Then________begantoappearedontheearth.dustexplodedintimecarbonwater____________inwaterareconsideredtobetheearliestlivesontheearth.TheO2theysuppliedencouragedthelivesof______________.Slowlygreenplantsgrewonland,whichwerefollowedby__________likeinsects&________.Whentheplantsgrewinto______,______appeared.Then_______developedbutdisappearedlater,whichmadetheriseofatotallydifferentanimal,______,possible,andfinally_____spreadallovertheworld.shell--fishandfishamphibiansforestsreptilesdinosaursmammalhumansThesmallplantslandanimalsBecausetheyareputtingtoomuchcarbondioxideintotheatmosphere,whichpreventsheatfromescapingfromtheearthintospace.Theearthmaybecometoohottoliveon.(5).Whatproblemiscausedbyhumanbeings.GlobalwarmingmakefulluseofsolarenergyplanttreesrecyclerubbishsavewaterpurifyairWhatcanwedototakecareoftheearth?DiscussionHomework:writea100-wordcompositionabouthowtotakecareoftheearthduetoglobalwarming.4.22TheWorldEarthDay
