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时间:2019-11-10
《2019-2020年高考英语备考专题17阅读理解之说明文无答案》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、2019-2020年高考英语备考专题17阅读理解之说明文无答案1.【•湖北卷】Theoddnessoflifeinspaceneverquitegoesaway.Herearesomeexamples.Firstconsidersomethingassimpleassleep.Itspositionpresentsitsownchallenges.Themainquestioniswhetheryouwantyourarmsinsideoroutsidethesleepingbag.Ifyouleaveyourarmsout,theyfloatfreeinzerogravity,o
2、ftengivingasleepingastronautthelookofafunnyballed(芭蕾)dancer.“I’maninsideguy,”MikeHopkinssays,whoreturnedfromasix-monthtourontheInternationalSpaceStation.“Iliketobewrappedup.”Onthestation,theordinarybeesstrange.TheexercisebikefortheAmericanastronautshasnohandlebars.Italsohasnoseat.Withnogravity
3、,it’sjustaseasytopedalviolently.Youcanwatchamoviewhileyoupedalbyfloatingamicroputeranywhereyouwant.Butstationresidentshavetobecarefulaboutstayinginoneplacetoolong.Withoutgravitytohelpcirculateair,thecarbondioxideyouexhale(呼气)hasatendencytoformaninvisible(隐形的)cloudaroundyouhead.Youcanendupwithw
4、hatastronautscallacarbon-dioxideheadache.LeroyChiao,54,anAmericanretiredastronautafterfourflights,describeswhathappensevenbeforeyoufloatoutofyourseat,”Yourinnerearthinksyour’refalling.Meanwhileyoureyesaretellingyouyou’restandingstraight.Thatcanbeannoying—that’swhysomepeoplefeelsick.”Withinacou
5、pledays—trulyterribledaysforsome—astronauts’brainslearntoignorethepanickysignalsfromtheinnerear,andspacesicknessdisappears.Spacetravelcanbesodelightfulbutatthesametimeinvisiblydangerous.Forinstance,astronautslosebonemass.That’swhyexerciseisconsideredsovitalthatNationalAeronauticsandSpaceAdmini
6、stration(NASA)putsitrightontheworkdayschedule.Thefocusonfitnessisasmuchaboutscienceandthefutureasitisaboutkeepinganyindividualastronautsreturnhome,and,moreimportantly,howtomaintainstrengthandfitnessforthetwoandahalfyearsormorethatitwouldtaketomakearound-triptoMars.1.Whatisthemajorchallengetoas
7、tronautswhentheysleepinspace?A.DecidingonapropersleeppositionB.ChoosingafortablesleepingbagC.SeekingawaytofallasleepquicklyD.Findingarighttimetogotosleep.2.Theastronautswillsufferfromacarbon-dioxideheadachewhen_____.A.theycirclearoundon
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