第02講選擇必修第三冊Unit2Outofthisworld目錄新知導航：熟悉課程內容、掌握知識脈絡基礎知識：知識點全面梳理，掌握必備重點記憶：關鍵點快速記憶，提升能力小試牛刀：考點剖析+過關檢測，合理應用核心單詞講解1.absencen.缺乏，不存在；缺席(1)absencefrom缺席……in/duringone’sabsence 當某人不在時(2)absent adj.缺席的，不在的beabsentfrom 缺席，不在2.bothervt.使煩惱，使擔心；花費時間精力(做某事)；打擾vi.花費時間精力(做某事)n.麻煩，困難bothertodosth./bother(about)doingsth.QUOTE費力做某事(常用于否定或疑問句)Itbotherssb.that... 令某人煩惱的是……Don’tbother 不必麻煩Sorrytobotheryou 對不起，打擾了3.occupyvt.占用，使用；居住；占領，侵占；使忙于(1)occupyoneselfwith/(in)doingsth.忙于(做)某事beoccupiedwith/(in)doingsth.忙于(做)某事(2)occupation n.占用，使用；居住；占領，侵占；職業4.castnewlighton使進一步了解……casta/an...look/glanceat 向……投去……的目光castaneyeover 瞥一眼，粗略看一下castdoubton 對某事產生疑慮castashadowon 在……上投下陰影5.maintenancen.維護，保養；維持，保持maintain vt.維護，保養；維持；供養maintainstability/continuity保持穩定/連續性maintaincontact/relations/links保持聯系maintainthat 主張，堅持認為6.circumstancen.條件，狀況；境況，(尤指)經濟狀況inthecircumstances 在這種情況下，既然如此in/under...circumstances 在……條件/情況下in/undernocircumstances決不，無論如何都不(置于句首時，句子要用部分倒裝形式。)7.exposuren.面臨，遭受；揭露；報道(1)exposureto 接觸……；暴露于……(2)expose vt.使暴露，使顯露；揭露；曝光expose...to... 使……接觸到……；使……暴露于……(exposeoneselfto 使自己暴露于……)(3)exposed adj.暴露的，無遮蔽的beexposedto 暴露于；接觸8.inviewof鑒于，考慮到(1)inone’sview/fromone’spointofview在某人看來inview 在視野范圍內comeintoview 進入視野(2)view...as... 把……看作/當作9.vitaladj.必不可少的，對……極重要的；維持生命所必需的bevitalfor/to 對……至關重要It’svitaltodosth. 做某事非常重要bevitalthatsb.(should)dosth.某人做某事是非常重要的(vital后跟句子時，從句中的謂語動詞用“should+動詞原形”表示虛擬，其中should可以省略。)10.disciplinevt.嚴格要求(自己)；懲罰；訓練n.訓練，紀律；行為準則；自制力disciplineoneself(todosth.)嚴格要求自己(做某事)disciplinesb.forsth. 因某事懲罰某人11.crucialadj.至關重要的，關鍵性的becrucialto/forsb./sth.對某人/某物來說至關重要becrucialtodoingsth. 做某事是至關重要的It’scrucialtodosth. 做某事是至關重要的It’scrucialthatsb.(should)dosth.某人做某事是至關重要的(從句中的謂語動詞用“should+動詞原形”表示虛擬，其中should可以省略。)12.comprisevt.包括，包含；組成，構成becomprisedof由……組成延伸：不一樣的“組成”bemadeupofconsistofbecomposedof13.foundationn.基礎，根據；地基；創辦；基金會(1)laythefoundationfor 為……打下基礎shake/rockthefoundationsofsth. 動搖……的根基/基礎withoutfoundation 沒有根據(2)found vt.創辦，成立14.originn.起源，起因；出身(1)inorigin在本源上(2)originate vi.&vt.起源；創始originatefrom/in 來自，源于(后接地點、時間或事件)(3)original adj.起初的；新穎的(4)originally adv.起初，原來15.calculatevt.計算，核算；預測，推測(1)calculatethat/wh-clause計算……；預測……calculateon/upon 指望；期待becalculatedtodosth. 計劃做/打算做/旨在做某事Itiscalculatedthat... 據估算……(2)calculation n.[C，U]計算；預測calculator n.計算器16.assistantn.助理；售貨員；助教adj.助理的；副的(1)anassistantto...……的助手teachingassistant/assistantteacher助教shopassistant 店員(2)assist v.幫助；協助assist(sb.)withsth./in(doing)sth.幫助(某人)(做)某事；在(做)某事上協助(某人)assistsb.todosth. 幫助某人做某事(3)assistance n.援助；幫助cometoone’sassistance 來幫助某人17.sheltern.居所，住處，庇護vt.保護，掩蔽vi.躲避(1)take/seekshelterfrom...躲避……undertheshelterof...在……的庇護下givesb.shelter 庇護某人(2)shelter...from... 保護/庇護……免受……18.coveragen.新聞報道；覆蓋范圍；信息范圍coverv.覆蓋；涉及；報道；足夠支付；走過n.蓋子；封面becoveredby/with被……覆蓋二、重點詞塊速記1.attachoneselfto依戀，附屬于

2.carryout 做，實施，執行，開展

3.castnewlighton 使進一步了解……

4.in/underthecircumstances

在這種情況下，既然如此5.inviewof 鑒于，考慮到

6.puton 穿上；增加(體重)；舉辦，展出；打開(設備、裝置等)；提高……的成本(或價值)；(行為舉止)假裝

7.breathein 吸氣；吸入

8.headout 出發；頭探出；啟程

9.goby 流逝，過去10.setup 建立11.cometoanend 結束12.differfrom 與……不同13.dueto 由于，因為14.leadto 導致15.laythefoundationfor為……打下基礎16.makesenseof理解

17.gofarbeyond 遠超出

18.bebathedin 沐浴

19.apply...to... 把……應用到……20.setup 建立

21.longtodosth. 渴望做某事

22.awasteof 浪費23.makemajorcontributionsto 做出重要的貢獻24.takeadvantageof 利用三、重點句型剖析1.Ourmainmissionistoconductscientificresearch.(不定式作表語)我們的主要任務是進行科學研究。2.SplendidastheviewoftheEarthis,spacewalkingisnotasexcitingasyoumightthink.(as引導讓步狀語從句)雖然地球的景色十分壯觀,但太空行走并不像你們可能想象的那么激動人心。3.That’swhyeveryspacewalkiscarefullyplanned.(That’swhy...)那就是為什么每次太空行走都是精心計劃的。4.Spendingsometimeinthegymisofvitalimportancetoastronauts’health.(be+of+抽象名詞)花些時間在健身房鍛煉對宇航員的健康至關重要。5.Duetothenearabsenceofgravityinspace,wehavetoattachourselvessothatwedon’tfloataround.(sothat引導目的狀語從句)由于在太空中幾乎沒有重力,我們必須綁著自己,這樣我們才不會四處飄浮。6.Intheearly1600s,Galileowasthefirsttousehistelescopetoexploretheskyandsincethen,telescopeshavecontinuallyimproved.

(thefirsttodo…)在17世紀早期,伽利略是第一個用望遠鏡探索天空的人,從那以后,望遠鏡不斷改進。7.Whetherlifeonotherplanetsdoesexistisyettobeproved,butthesignsarepromising:KeplerhasdetectedmanysuitableplanetsthatarealmostthesamesizeastheEarth.(對謂語動詞的強調)其他行星上是否存在生命還有待證實,但跡象很有希望:開普勒已經發現了許多合適的行星,它們的大小幾乎和地球一樣。

8.ItisthroughourresearchintospacethatwehaveconfirmedthattheEarthisroundandthatitorbitstheSun.(強調句型)正是通過我們對太空的研究,我們證實了地球是圓的,它繞著太陽轉。9.Withtechnologiesfirstresearchedanddevelopedforspaceexploration,wecansolvesomeofthebigproblemsfacingmankind,makingourlivessaferandeasier.(現在分詞短語作結果狀語)通過在太空探索中首次研究和發展的技術,我們可以解決人類面臨的一些重大問題,使我們的生活更安全、更輕松。10.Forexample,liquidhydrogenisacleanalternativeenergysourcethatisusedwidelyasrocketfuel,anditislikelythathydrogenfuelcellvehicleswillbemass-producedandlaunchedinthenearfuture.(Itislikelythat...)例如,液氫是一種清潔的替代能源,被廣泛用作火箭燃料,氫燃料電池汽車很可能在不久的將來被大量生產并投放市場。11.Ithasbeencalculatedthattheglobalspaceeconomyisincreasingbybillionsofdollarseveryyear.(Ithas+v.-ed+that...)據統計,全球航天經濟每年增長數十億美元。重點句型1.sothat引導目的狀語從句(教材原句)Duetothenearabsenceofgravityinspace,wehavetoattachourselvessothatwedon’tfloataround.

在太空中由于幾乎沒有重力,我們必須綁著自己,這樣我們才不會四處飄浮。歸納：sothat意為“為了,以便”,引導目的狀語從句,相當于inorderthat。延伸：不一樣的“sothat”(1)sothat除了引導目的狀語從句外,還可引導結果狀語從句,意為“結果是,所以”。(2)sothat引導目的狀語從句和結果狀語從句的區別:①從意義上講,sothat引導目的狀語從句,意為“為了,以便”;引導結果狀語從句,意為“結果是,所以”。②從形式上看,sothat引導的目的狀語從句中常有情態動詞may,can,might或could;sothat引導的結果狀語從句一般要用逗號和主句隔開,從句里沒有表目的的情態動詞may,can,might或could,此時that可以省略。2.as引導讓步狀語從句(教材原句)SplendidastheviewoftheEarthis,spacewalkingisnotasexcitingasyoumightthink.

雖然地球的景色十分壯觀,但太空行走并不像你們可能想象的那么激動人心。歸納：as意為“雖然,盡管”,引導讓步狀語從句,句子為部分倒裝形式,其結構為:形容詞/副詞/動詞原形+as+主語+謂語。(1)as引導讓步狀語從句時,可用though替代,但不能用although。(2)在上述結構中,若位于句首的是單數可數名詞,則通常省略不定冠詞a(n)。延伸：部分倒裝還用于以下幾種情況:(1)含有否定意義或否定形式的詞或詞組位于句首時。常見的詞和短語有:never,seldom,rarely,little,barely,scarcely,hardly,nosooner,notuntil,atnotime,bynomeans,innocase,in/undernocircumstances,innosense,innoway,onnoaccount等。(2)“only+副詞/介詞短語/狀語從句”置于句首時。(3)so/neither/nor表示前面所說的情況也適合于后者時,用“so/neither/nor+助動詞/be動詞/情態動詞+主語”這樣的倒裝句式。(4)在“so...that”結構中,將“so+adj./adv.”置于句首時。(5)當虛擬條件句含有were,should,had時,可省略if,將were,should,had置于句首。3.be+of+抽象名詞(教材原句)Spendingsometimeinthegymisofvitalimportancetoastronauts’health.花些時間在健身房鍛煉對宇航員的健康至關重要。

歸納：“be+of+抽象名詞”結構說明句子主語所具有的作用、重要性或意義。用于該結構中常見的抽象名詞有:importance,value,help,use,benefit,interest,significance等。在這類抽象名詞前我們可用一些形容詞(詞組),如great,little,some,any,no,notmuch等來修飾抽象名詞,用以說明程度。延伸：“be+of+名詞”結構“be+of+名詞”結構還可用來說明句子主語在度量、大小、顏色、類別等方面的特征。這類名詞有:colour,age,size,height,weight,shape,type,kind,quality等。在這類名詞前常用different,all,thesame,this,that等詞來修飾或說明。4.That’swhy…(教材原句)That’swhyeveryspacewalkiscarefullyplanned.

那就是為什么每次太空行走都是精心計劃的。“That’swhy...”意為“那就是為什么……”,why引導表語從句。“That’sbecause...”意為“那是因為……”,說明的是原因。5.不定式作后置定語(教材原句)Intheearly1600s,Galileowasthefirsttousehistelescopetoexploretheskyandsincethen,telescopeshavecontinuallyimproved.

在17世紀早期,伽利略是第一個用望遠鏡探索天空的人,從那以后,望遠鏡不斷改進。歸納：不定式作后置定語(1)英語中序數詞是中心詞或作定語修飾名詞時,后常用不定式作后置定語。(2)除了序數詞外,最高級或no,all,any等限定詞的中心詞也常用動詞不定式作后置定語。(3)chance,wish,ability,courage,need,promise,attempt,time,opportunity,way等名詞后常用不定式作后置定語。6.強調謂語動詞(教材原句)Whetherlifeonotherplanetsdoesexistisyettobeproved,butthesignsarepromising:KeplerhasdetectedmanysuitableplanetsthatarealmostthesamesizeastheEarth.其他行星上是否存在生命還有待證實,但跡象很有希望:開普勒已經發現了許多合適的行星,它們的大小幾乎和地球一樣。

歸納：如何強調謂語動詞英語中若對謂語動詞進行強調,不能用強調句型,而用“do/does/did+動詞原形”的形式,這種強調形式只有一般現在時和一般過去時,且只對肯定的謂語動詞進行強調。7.itislikelythat...(教材原句)Forexample,liquidhydrogenisacleanalternativeenergysourcethatisusedwidelyasrocketfuel,anditislikelythathydrogenfuelcellvehicleswillbemass-producedandlaunchedinthenearfuture.

例如,液氫是一種清潔的替代能源,被廣泛用作火箭燃料,氫燃料電池汽車很可能在不久的將來被大量生產并投放市場。itislikelythat...意為“很可能……”,其中it是形式主語,that從句作真正的主語。特別提醒：It’slikelythatsb.willdosth.可轉換成sb./sth.islikelytodosth.重點語法(主語從句)一.概念：在句子中起名詞作用的各種從句統稱為名詞性從句。根據它們在句中的語法作用,這類從句又可分為主語從句、賓語從句、表語從句和同位語從句。所以充當主語的從句叫主語從句。二、主語從句引導詞連接詞that,whether連接代詞what,who,whom,which,whose,whatever,whoever,whomever,whichever連接副詞when,where,how,why,whenever,wherever三、that引導的主語從句1.that引導主語從句時只起連接作用,在句子中不作任何成分,也無任何意義。Thatthefirecrackerslituptheskymadethechildrenjoyful.煙花照亮了天空,孩子們興奮不已。2.有時為了平衡句子結構,用it充當形式主語,而將that從句置于后面。It’sobviousthathedidwellinthefinalexambecausetherewasanexcitedexpressiononhisface.很明顯,他期末考試考得很好,因為他臉上帶著興奮的表情。特別提醒：that引導主語從句時通常不能省略,尤其是位于句首時。3.主語從句中常用it作形式主語的句型有:(1)It+be+形容詞(clear,obvious,true,possible,certain,important,necessary,strange,natural,likely,surprising,vital等)+that從句(2)It+be+名詞(詞組)(apity,ashame,anhonour,afact,nowonder,nosurprise等)+that從句(3)It+be+過去分詞(said,reported,announced,proved,thought,expected,hoped,decided,suggested,advised,ordered,required,demanded等)+that從句特別提醒：在上述it充當形式主語的句型中,若形容詞是important,necessary,strange,natural,vital,essential等,過去分詞中的動詞是表“建議、命令、要求、請求”的動詞,如suggest,advise,recommend,propose,order,command,require,request,urge,demand等,那么that從句中的謂語動詞要用“should+動詞原形”表示虛擬語氣,其中should可以省略。*(讀后續寫之人物描寫)ItisstrangethatTom(should)holdhisbreathfornearlyaminuteunderthewater.真奇怪,湯姆竟然能在水下屏住呼吸將近一分鐘。Itisrequiredthatstudents(should)wearschooluniformsatschoolfromMondaytoFriday.學生被要求周一到周五在校穿校服。(4)It+不及物動詞(短語)(happened,occurred,seemed,appeared,turnedout等)+that從句ItoccurredtomethatIhadleftthedoorunlocked.我突然想起我忘記鎖門了。四、whether引導的主語從句whether意為“是否”,引導主語從句時只起連接作用,在句子中不作任何成分。Whetherweshouldgoonwiththeworkisstillaquestion.我們是否應該繼續這項工作還是個問題。Itmakesnodifferencewhetherhewillcomeheretomorrow.明天他是否來這里無關緊要。特別提醒：whether引導主語從句(1)whether引導主語從句時可以放在句首,也可以讓it充當形式主語,真正的主語后置。(2)whether引導主語從句時一般不能用if替代。五、連接代詞引導的主語從句連接代詞包括:what,who,which,whom,whose,whatever,whoever,whomever,whichever等,在句中作主語、賓語、表語或定語。WhatIsuggesttoyouisthatyoushouldimproveyourstudyefficiency.我給你的建議是你應該提高學習效率。Whowillcarryouttheimportantmissionhasn’tbeendecided.誰來執行這項重要任務還沒有決定。特別提醒：連接代詞引導主語從句what引導主語從句時在從句中作主語、賓語、表語或定語,相當于定語從句中的“先行詞+關系代詞”的形式,表示“……的事情(時間、地點、樣子等)”。Wemadeatriptowhat(=theplacethat)wasonceaimperialpalace.我們到曾經是個皇宮的地方去旅游。Whoever(=Anyonewho)didthejobmustberewarded.無論誰做了這項工作一定要得到酬謝。六、連接副詞引導的主語從句連接副詞包括:when,where,how,why,whenever,wherever等,在主語從句中作狀語。WhenwewillmakeatriptoKunmingwillbetoldsoon.我們什么時候去昆明旅游很快就會被告知。Whereverhe’llgoforhisjourneymakesnodifferencetome.他無論去哪兒旅行對我來說都無所謂。特別提醒：“疑問詞+ever”既能引導主語從句,又能引導讓步狀語從句。但是“nomatter+疑問詞”只能引導讓步狀語從句。Wheneveryouwanttocomeisfinewithus.(主語從句)無論你什么時候想來,我們都歡迎。Wheneveryougetintotrouble,youcanturntomeforhelp.(狀語從句)無論什么時候遇到麻煩,你都可以向我求助。考點一、核心單詞語法填空Ⅰ單詞拼寫1.Don’t________(使擔心)yourselfaboutme;Iamdoingquitewell.2.Theythinkittakesnomorethanthreedaystofulfillthe________(任務).3.Manistheonly________(生物)thatisgiftedwithspeech.4.Ourresearchattemptsto________(評估)theeffectivenessofdifferentdrugs.5.________(此外),theyclaimthatanysuchinterferenceiscompletelyineffective.6.AllthisextraworkI’mdoingisbreakingintomy________(閑暇)time.7.Thequestionoftheoriginofthe________(宇宙)isstillhotlydebatedbyscientists.8.Reformisthepowerful________(原因)forcethaturgessocialadvancement.9.You’llneedto________(計算)howmuchtimetheassignmentwilltake.10.Theytookcareoftheyounggirl,providingherwithfoodand________(住所).Ⅱ單句語法填空1.(2023上·福建漳州·高二統考期中)Afteralong(absent)fromwork,Iwentbacktothecompany.2.(2023上·高二課時練習)Hedidn’tbother

(answer)myquestion,whichdidn’tappealtohim.3.(2023上·江蘇無錫·高二江陰市華士高級中學校考階段練習)(occupy)myselfinwatchingthevase,Ihadnotimetoappreciateotherantiquesinthisshop.4.(2023上·廣東惠州·高二校考期中)Peopleneedtoberetrainedtobequalifiedforthenew(occupy).5.(2023上·高一課時練習)Shekeepsherselffully(occupy)withvolunteeractivities.6.(2023上·福建漳州·高二福建省華安縣第一中學校考階段練習)Threeprofessorswereaskedtomakean(evaluate)oftheteachingplan.7.(2023上·海南三亞·高一校考期中)Thetwocountrieshavealways(maintain)closerelationsforyears.8.(2022下·高二課前預習)Theoperatorhastobeabletocarryoutroutine(maintain)ofthemachine.9.(2023上·海南·高二海南中學校考期中)Underno(circumstance)shouldteachersbeservantsofstudents.10.(2022下·高二課前預習)Heshouldn’tbetoblamefortheincidentthiscircumstance.11.(2023上·河北石家莊·高二校考階段練習)(expose)toloudmusictoomuchhascausedhearingprobleminsometeenagers.12.(2023上·廣東廣州·高二執信中學校考階段練習)Duetothelongterm(expose)toradiation,shedevelopedbloodcancer.13.(2023上·四川遂寧·高一射洪中學校考期中)Moststarsare(visible)tothenakedeye.That’swhywecan’tseemanyevenonaclearday.14.(2023上·高二課時練習)Asisknowntoall,interestisvitalthesuccessofone’scareer.15.(2023·高二課時練習)Heisburstingwith(vital)andnewideas.16.(2023上·高一課時練習)Our(origin)planwastogocamping,butlateritbegantorainheavily.17.(2023下·高二單元測試)Hisfather(frequent)amusedtheboywithatabletcomputerwhichwasloadedwithcolorfulpicturesthatcomealivewhenyoupokethem.18.(2022·全國·高三山東省東明縣第一中學校考專題練習)Theflooddisastershavethehighestinthisarea,inotherwords,theyoccur.(frequent)19.(2022下·高二課前預習)Speechismadeupofsoundwavesthatvaryin(frequent)andintensity.20.(2023·高二單元測試)Itis(crucial)importantthatwearereadyforthistime.考點二、重點詞塊選詞填空選詞填空(可適當改變形式)castnewlighton,inthecircumstances,inviewof,laythefoundationfor,becomprisedof,differfrom,makesenseof,apply...to...1.Canyou________whatthisAmericanissaying?

2.Thenurse________pressure________thepatient’swoundtostopthebleeding.3.Humangenomeresearchis________Alzheimer’sdisease.

4.Theresearchcan________thefurtherdevelopmentofspaceexploration.

5.Agas________asolidinthatithasnodefiniteshape.

6.________theseriousnessofthematter,I’llspeakfromthewrittentext.

7.________itisnecessarytocanceltheoriginalplanofthemeetingtobeheldnextweek.

8.Asisknowntoall,afootballteam________elevenplayers.

考點三、重點句型完成句子1.________________,youcan’tarrivethereinonehour.

盡管你走得快,你也不能在一小時內到那里。2.Thesephenomenaaresupposedto________________astheymayaffectweatherandradiocommunication.

人們認為這些現象很重要,因為這些現象會影響氣候和無線電通訊。3.I’mstudyinghard________________myclassmates.

我正在努力學習,以便能趕上我的同學。4.Ihaven’tbeentoschoolfortwoweeksandhavemissedalotoflessons.________I’mworkinghardatmylessons.

我兩周沒上學了,落下不少功課。那就是我努力學習的原因。5.Thoughhehasnevermetanyaliens,hebelievesthey________________.(對謂語動詞進行強調)雖然他從沒見過外星人，但他相信他們確實存在。考點四、重點語法單詞語法填空1.ourparentsdemandofustounderstandisthatwestudyhardforthedevelopmentofourcountry.2.(2023上·山西大同·高二大同一中校考階段練習)Eventually,Idecidedtofollowherandhappenedtrulyamazedme.3.thereislifeonthemoonisaninterestingquestion.4.ThesettingofthefilmZootopiamaybelimitedinthecityfullofkindsofanimals,butitexposesabouthumannatureisquitebroad.5.(2023上·廣東東莞·高二校考階段練習)Itremainstobeseenthemeasureswilltakeeffectornot.6.Itisbynomeansclearthelocalgovernmentwilldowiththebuildingsofpoorquality.7.IhopeImentionedabovewillbeofgreatusetoyoursurvey.8.However,cloningtechnologyshouldbedevelopedornotisdebatable.9.(2023上·廣東揭陽·高二統考期中)theearthgoesaroundthesunisafactknowntoall.10.(2023上·福建廈門·高二廈門雙十中學校考階段練習)Itremainsunknowntheplanwillbecarriedoutornot.11.(2023上·海南海口·高二校考階段練習)wecanstartofftomorrowornotwilldependontheweather.12.(2023上·四川成都·高二校考期中)(who)breaksthelawwillbepunished.能力提升閱讀理解(2023上·西藏拉薩·高二統考期末)Thejourneytothemoonhasbeenthefirststeptowardsfutureexplorationinspace.ThedistancebetweentheMoonandEarthisveryshortindeedwhencomparedwiththedistancesbetweenEarthandtheotherplanets.Mars,thenearestplanettoEarthismillionsofmilesaway!Travellingtotheplanetswillbeman’snextaim.Suchtravelswillbemorechallengingthanthetriptothemoonandcertainlymoreadventurous.Recently,twoAmericanspaceships,Vikings1and2,landedonMarstryingtodiscoverwhetherthatplanethasanylifeonit.SofarthesignsoflifeonMarshasneitherconfirmednorruledout.RussianshavediscoveredthatthesurfaceofVenus(金星)issohotthatitisalmostcertainthatthereisnolifethere.AlsotheatmosphereofVenusisextremelydenseandthepressureisnearlyahundredtimesgreaterthanthatoftheEarthsatmosphere.Scientistsbelievemanmayfindplanetswhichhavethesameconditionsasthosewehaveonearth,butmanshouldrealizeEarthwillbehisonlyhomeforalongtimeandbegintoloveandcareforit.1.Accordingtothepassage,travellingtotheplanetswillbe______.A.mucheasierandevenmoreinteresting B.farmorechallenginganddangerousC.man’sfinalaim D.man’sfirststep2.WhatAmericanspaceshipstriedtodiscoveraboutMars?A.whetherMarshasanylife B.whatisMarslikeC.whatistheatmosphereofMars D.whetherMarshaswater3.Fromthepassage,wecanlearn______.A.thereislifeonMarsB.thereisnolifeonMarsC.theatmosphereofMarsisnotsodenseasthatofVenusD.scientistswillhavelittlehopetofindtheanswers4.Scientiststhinkweshouldtakecareofourearthbecause______.A.nootherplanetsaretotaketheplaceoftheearthB.everythingneededisprovidedbytheearthinC.theonlyhomeofmanwillbetheearthforalongtimeD.thedreamtofindanotherhomeformanwillcometrue二.完形填空GeorgeEdwinMuellerwasbornin1918.Asachild,helovedtoseehowthingsworked.Inspiredbyhisfather’swork,heoftenfittedtogetherpartsofradiosandmodelplanes.Whenhecompletedhisuniversity1,heworkedforafewyears,andthenwentonto2hisdoctor’sdegree.In1963,DrMuellerwasinvitedtomanagetheApolloprogramme.By1961,Ru