大学英语教程第四册Unit11

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或outline/SS©fOt>B/vt.£n.描画；概述Bhood/万 n.引擎盖antenna/8 n.天线Bair-conditioning/司R芭也&j中aflasher用N・8句中/n.闪光车灯 a陟e中 其/n.空调Bheadlight濯笈n且•公陟♦/n.车头灯回Cairo媚华公陟3口中 开罗（埃及首都）fallbackon求助于1) A.Mark,willyoutellmehowIcan Cairo?B.CatchtheplanewithAmerican andchangeatParis.2) A.Iamnotsurewhatthebestwaytohang withoutdamagingthe wallis.B.Couldn'tyouuse ?Itpeelsofeasily.3) A.Isimplycan'tlearnEnglish.Itryandtrybutjustdon't . B.Iknowit'shard,butmaybeit'11helpifwepracticingtogether.4)A.Wereyouabletounderstandthat withoutanyhelp fromtheteacher? B.Ididprettywell,but Ihadtofallbackonmydictionary.5)A.I'mnotsurewhethertobuyanewcarora frommy friend.savingmoney.'SitiBtionalCsr/Msati出.班o比Ll..bTextB6.Onceoutsidetheatmosphere,however, manisnolongerprotected,andradiationcanbeharmfulinanumberofways. Adistinctionmustbedrawnbetweentheshort-andlong-termeffectsofradiation.可是一旦出了大气层，人们就失去了保护，辐射可以在几个方面产生危害。辐射的近期影响和远期影响须区别看待。outsidetheatmosphere,相当于Assoonasheisoutsidetheatmosphere.7.Theformeraremerelyunpleasant,butjustbecauseanastronautreturningfromajourneyinspacedoesnotseemtohavebeengreatlyharmed, wecannotassumethatheissafe.Thelong-termeffectscanbeextremelyserious, evenleadingtodeath.前者仅仅是令人不适，但我们不能仅凭从太空归来的宇航员表面上没有受到严重伤害这一点就认为他安然无恙。而后者可以产生及其严重的后果，甚至导致死亡。TextB8.Onesolutiontothedangersofradiationistoprotectthespaceshipbyputtingsomekindofshieldaroundit.保护飞船免遭辐射的办法之一是在其外壳加上防护罩。事实上登上月球的阿波罗飞船就是这样装备的。 solution后面的介词是to而不是of

9.ThiswasinfactdoneontheApollospaceshipswhichlandedonthe moon.Butthissolutionisnotpossibleforlongerjourneys-to Marsforexample becausetheshieldwouldneedtobeverylarge, andcouldnotbecarried.然而这种办法不可能用于更远的太空旅行，如去 火星，因为这样的防护罩所要求的体积很大，从而无法运载。TextB

10.Anothersolution,notinfactpossibleatpresent,wouldbetosurroundthespaceshipwithamagneticfieldtodeflecttheradiation.Inall, wehavetoconcludethatthereisatprese