人教版高中英语必修三教学案Unit 4 Section 1含答案Word文档格式.docx
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Peoplewillstayandstudytherewithmanyofthethingstheyhave
athome.Laboratories,livingroomsandpowerstationsarebeingbuilt.
TheISSisthemostambitiousandexpensivespaceprogram
ever.Billionsofdollarsarebeingspentoniteveryyear.Scientists
hopethattheISSwillbeasteppingstoneforfuturespaceexploration.
“TheISSwillhelpusbetterunderstandthehumanbody,explorespace
andstudytheearth.Itcanhelpusmakelifeontheearthbetter,”
saidKathrynClark,anISSscientist.
ChinaisnotanISScountry,butithashelpedwithsomeofthe
experiments.ChinasentsomericeuptotheISStofindoutwhat
spacewoulddotoit.
TheISSisnotfinishedyet.Morethan100partsneedtobeputon.
Scientistshopeitwillbefinishedassoonaspossible.Afterit'
s
finished,morethan90%oftheworld'
spopulationwillbeabletosee
theSpaceStation.Sokeeplookingup,andmaybeyou'
llseeitgetbigger.
2019-2020年人教版高中英语必修三教学案:
Unit4Section1(含答案)
[原文呈现][读文清障]
HOWLIFEBEGANONTHEEARTH
Nooneknowsexactlyhowtheearthbegan,asithappenedsolongago①.However,accordingto②awidelyaccepted③theory④,theuniversebeganwith⑤a“BigBang⑥”thatthrewmatterinalldirections⑦.Afterthat,atoms⑧begantoformandbinetocreatestarsandotherbodies.
Forseveralbillion⑨yearsafterthe“BigBang”,theearthwasstilljustacloudofdust⑩.Whatitwastobeewasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe⑪.Theearthbecamesoviolent⑫thatitwasnotclearwhethertheshapewouldlastornot⑬.Itexplodedloudlywithfireandrock.Theywereintimeto⑭producecarbondioxide⑮,nitrogen⑯,watervapour⑰andothergases,whichweretomaketheearth'
satmosphere⑱.Whatisevenmoreimportantisthatastheearthcooleddown⑲,waterbegantoappearonitssurface.
①asithappenedsolongago是as引导的原因状语从句。
②accordingto“根据”,后跟名词、代词等,不跟me,us,view,opinion等词。
③widelyaccepted广泛接受的
④theory/'
θIərI/n.学说;
理论
⑤beginwith(=startwith)从……开始,起源于
⑥BigBang宇宙大爆炸;
创世大爆炸
⑦inalldirections(=ineverydirection)朝四面八方
⑧atom/'
æ
təm/n.原子
⑨billion/'
bIlIən/pron.&
n.&
adj.〈英〉万亿;
〈美〉十亿
⑩acloudofdust一团尘埃
acloudof一般用来修饰不可数名词。
⑪globe/ɡləʊb/n.球体;
地球仪;
地球
global/'
ɡləʊbl/adj.全球性的;
全世界的
⑫violent/'
vaIələnt/adj.猛烈的;
激烈的;
强暴的
⑬it为形式主语,whether从句为真正的主语。
⑭intimetodosth./forsth.及时做某事;
来得及做某事
intime及时;
终于
⑮carbondioxide二氧化碳
carbon/'
kɑːbən/n.碳
dioxide/daI'
ɒksaId/n.二氧化物
⑯nitrogen/'
naItrədʒən/n.氮
⑰watervapour蒸气;
水蒸气
vapour/'
veIpə/n.水蒸气;
蒸气
⑱atmosphere/'
tməsfIə/n.大气层;
气氛
⑲cooldown凉下来,冷却
地球上生命的起源
[第1~2段译文]
没有人确切知道地球是怎样开始的,因为在很久以前它就形成了。
然而,根据一种普遍为人们所接受的理论,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。
然后,原子开始形成并结合成恒星和其他天体。
大爆炸后好几十亿年过去了,地球还只是一团尘埃。
(随后)它变成什么没人确定,直到45~38亿年前,这团尘埃才慢慢地形成一个固态的球体。
地球变得如此激烈动荡,以至于不知道这个固体形状是否会继续存在下去。
它(地球)猛烈的爆炸喷出了烈火和岩石,最终产生了二氧化碳、氮气、水蒸气和其他气体,从而形成了地球的大气层。
更重要的是,随着地球冷却了下来,地球的表面开始出现了水。
WaterhadalsoappearedonotherplanetslikeMarsbut,unlike⑳theearth,ithaddisappearedlater.Itwasnotimmediatelyobviousthatwaterwastobefundamental
tothedevelopmentoflife
.Whatmanyscientistsbelieveisthatthecontinuedpresenceofwater
allowedtheearthtodissolve
harmful
gasesandacids
intotheoceansandseas.Thisproducedachainreaction
,whichmadeitpossibleforlifetodevelop.
Manymillionsofyearslater,thefirstextremelysmallplantsbegantoappearonthesurfaceofthewater.Theymultiplied
andfilledtheoceansandseaswithoxygen
,whichencouraged
thelaterdevelopmentofearlyshellfish
andallsortsoffish.Next,greenplantsbegantogrowonland.Theywerefollowedintimebylandanimals.Somewereinsects.Others,
calledamphibians
,wereabletoliveonlandaswellas
inthewater.Laterwhentheplantsgrewintoforests,reptiles
appearedforthefirsttime.Theyproducedyounggenerallybylayingeggs
.Afterthat,somehugeanimals,calleddinosaurs
,developed.Theylaideggstooandexisted
ontheearthformorethan140millionyears.However,65millionyearsagotheageofthedinosaurs
ended.Whytheysuddenlydisappeared
stillremainsamystery.Thisdisappearancemadepossibletheriseofmammals
ontheearth.Theseanimalsweredifferentfromalllifeformsinthepast,becausetheygavebirthto
youngbabyan