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TroublewillfindyounomatterwhereyougoNomatterifyou'refastnomatterifyou'reslowAndnomatterwhatIfeedhimhealwaysseemstogrowHeseeswhatIseeandheknowswhatIknowSodon'tbealarmedifhetakesyoubythearmHowIhatethewayhemakesmefeel12334456Unit4AstronomywordsStudy1.astronomyn.天文学Astronomyisthescientificstudyoftheuniverseandtheheavenbodies(suchasthesun,theearth,themoon),gas,anddustwithinit.天文学是对宇宙及其内部的天体、气体和尘埃所做的科学研究。2.astronomern.天文学家Whatinterestsyouinastronomy?在天文学方面，你对什么感兴趣？Doyouknowanyquestionsthatastronomersareinterestedin?你知道天文学家对什么问题最感兴趣吗？Theoriginoflifeontheearthisaquestionthatinterestsastronomers.地球上生命的起源是个使天文学家感兴趣的问题。3.solaradj.太阳的；日光的4.systemn.系统；体系；制度systematicadj有系统的;有条理的5.solarsystem太阳系Inoursolarsystemeightplanetscirclearoundthesun.在我们的太阳系八颗行星圆围绕太阳。Alcoholisbadforyoursystem.喝酒对身体有害。[练习]根据句子的意思完成句子。1).The_________________(教育系统)operatesverydifferentlyintheUSandChina.2).Heintroducedusawell-designed____________________(铁路系统).educationalsystemrailwaysystemThathotelisalwaysfullbecauseitoffersafriendly____andpersonalservice.A.surfaceB.atmosphereC.systemD.appearanceB6.religionn.宗教;宗教信仰7.theoryn.学说;理论8.BigBang宇宙大爆炸;创世大爆炸religiousadj.宗教的,虔诚的谨慎的,认真的theoreticaladj.理论的,推想的,假设的Theoriginoflifeontheearthisaquestionthatinterestsastronomers.地球上生命的起源是个使天文学家感兴趣的问题。However,accordingtoawidelyacceptedtheory,theuniversebeganwithaBigBangthatthrewmatterinalldirections.然而，一种普遍为人们所接受的理论是：宇宙起源于一次大爆炸，这次大爆炸将物质投射到四面八方。Buddhism,ChristianityandIslamarethethreemajorreligionsintheworld.佛教、基督教和伊斯兰教是世界上三大宗教。9.atomn.原子,微粒Afterthat,atomsbegantoformandcombinetocreatestarsandotherbodies.然后，原子开始形成并结合成恒星和其他天体。atomicadj.原子的；原子能的1._____________(atom)energyisagreatdiscoveryofthepresentcentury,andmanypeoplehaveplayedapartinitsdevelopment.AlbertEinsteintoldtheworldabout2.________basicideainhisfamousTheoryofRelativityin1905.Atomicits10.billionpron.n.adj.英万亿；美十亿11.globen.球体；地球仪；地球12.globaladj.全球性的；全世界的ForseveralbillionyearsaftertheBigBang,theearthwasstilljustacloudofdust.大爆炸后好几十亿年过去了，但地球还只是一团尘埃。Whatitwastobecomewasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe.它(地球)将成为什么样子一直是个谜，直到45~38亿年以前这些尘埃凝聚成一个固体球体。13.violentadj.猛烈的；激烈的；强暴的__________n.猛烈，暴力(行为)__________adv.猛烈地violenceviolentlyTheearthbecamesoviolentthatitwasnotclearwhethertheshapewouldlastornot.地球变得如此狂躁不安，因此搞不清楚这种形状是否会持续下去。14.intime及时；终于intimeforsth./intimetodosth.正好及时赶上……;来得及干某事15.carbonn.碳16.nitrogenn.氮17.vaporn.蒸气；水蒸气18.atmospheren.大气层；气氛Theywereintimetoproducecarbon，nitrogen,watervaporandothergases,whichweretomaketheearth'satmosphere.最终他们产生了碳、氮气、水蒸气和其他多种气体，从而形成了地球的大气层。intime来得及;innotime立即，立刻atanytimeatonetime曾经，一度atatime每次attimesontime按时，准时5．________，IlostheartinEnglishlearning，butmyteacheroftensaidtome，“Keeponstudyinghard，andyou’llsucceed________.”A．Atatime；intimeB．Atatime；ontimeC．Atonetime；intimeD．Atonetime；ontimeC19.unlikeprep.不同；不像WaterhadalsoappearedonotherplanetslikeMarsbutunliketheearth,ithaddisappearedlater.在火星这些其他行星上都出现了水，但和地球不同的是，这些水后来都消失了。___________prep.像，如同___________adj.可能的___________adj.不太可能的___________adj.相似的，同样的likelikelyunlikelyalike⑴Asisterisafriend_________(like)anyother.Insomeway，she’slikeamother.⑵Helikescatsbut__________(like)dogs.unlikedislikes20.fundamentaladj.基本的；基础的n.[pl.]基本原则(法则)fundamentallyadv.基本地；根本地fundamentn.基础；根本Itwasnotimmediatelyobviousthatwaterwastobefundamentaltothedevelopmentoflife.水对于生命的发展会起关键作用，这一点在当时并不明显。Astimewentby,computersbecamesmallerandmorepowerful,andtheybecame“personal”too,aswellas13,withdisplaybecomingsharperandstoragecapacityincreasing.13.AinstitutionalBuniversalCfundamentalDinstrumental13.AinstitutionalBuniversalCfundamentalDinstrumental21.presencen.出席；到场；存在22.dissolvevt.&vi.溶解；解散23.harmfuladj.有害的24.acidn.酸Whatmanyscientistsbelieveisthatthecontinuedpresenceofwaterallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.很多科学家相信，由于地球上长期有水存在，使得地球得以把有害气体和酸性物质溶解在海洋里。___________adj.目前的，出席的v.赠送______________n.介绍，呈现，演出___________［反义］n.缺席presentpresentationabsencepresentsthtosb把某物赠送给某人，presentsbwithsth把某物赠送给某人⑴Everyone___________(presence)atthemeetingwaspleasedatthe_________(present)ofthegeneralmanager.⑵Withlotsofproblemsunsettled，theyareverybusy____present.presentpresenceat_____________n.&v.伤害，损害______________adj.无害的，无恶意的_____________________对……有害的__________________________损害,伤害某人______________［反义］adj.有益的harmfuladj.有害的beneficialharmharmlessbeharmfultodosb.harm/doharmtosbAsweallknow，smokingis⑴_______(harm)toourhealth.That’stosay，itdoesharm⑵____ourhealth.Therefore，weshouldn’tsmokebuttodosomethingthatis⑶___________(harm)toourhealth.harmlessharmfulto25.chainn.链子；连锁；锁链26.reactionn.反应；回应Thisproducedachainreaction,whichmadeitpossibleforlifetodevelop.这就产生了连锁反应，使生命发展成为可能。____________vi.起反应，起作用，有影响____________［搭配］对……反应reactreactto...⑴Allherfriendswerequicktoreacttohersuddenchangewhileherparentsshowedno_________.(react)⑵Howdidhereact_____thenewsthattheirteamwon?toreaction27.multiplyvi.&vt.乘；增加28.oxygenn.氧29.shellfishn.水生有壳动物Theymultipliedandfilledtheoceansandseaswithoxygen,whichencouragedthelaterdevelopmentofearlyshellfishandallso