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1、甘肃省白银市2019届高三英语模拟试题（一）第一部分：阅读理解（共两节，满分40分）第一节：（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。ABEINGanastronautsoundscool,doesn'tit?Inspace,theygettodosomeprettyamazingthings,likefloatinginzerogravity. However,therearealsoplentyofthingsth
2、atastronautscan'tdobecauseoftheirweightlessenvironment,andthat'sverysad.What'sworse,theycan'tevenlettheirsadnessshow–becauseit'simpossibletocryinzerogravity. Ofcourse,astronautscanstillproducetears.Butcryingismuchmoredifficultinspace,reportedTheAtlanticinJ
3、anuary.Withoutgravity,tearsdon'tflowdownwardoutoftheeyesliketheydohereonEarth.Thismeansthatwhenyoucryinspace,yourtearshavenowheretogo—theyjuststicktoyoureyes. InMay2011,astronautAndrewFeustelexperiencedthisduringoneofhisspacewalks."Tears,"hesaid,"don'tfall
4、offofyoureye...Theyjustkindofstaythere." Besidesmakingyourvisionunclear,thiscanalsocausephysicalpain.BackonEarth,tearsaresupposedtobringcomforttotheeyes.Butthat'snotthecaseinspace.Thespaceenvironmentdriesoutastronauts'eyes,andwhentearssuddenlywettheeyes,it
5、cancausepainratherthancomfort."Myrighteyeispainfullikecrazy."Feusteltoldhisteammateduringthewalk. Sincegravitydoesn'tworkinspace,astronautsneedsomeextrahelptogetridofthetears.Feustelchosetorubhiseyesagainsthishelmettowipethetearsaway.Anotherchoiceistojustw
6、ait—"Whenthetearsgetbigenoughtheysimplybreakfreeoftheeyeandfloataround,"astronautRonParisetoldTheAtlantic. Therearelotsofsmallthings—thingslikecrying–thatwearesousedtoonEarth.Weusuallytakethemforgranted,untiltheybecomeaprobleminatotallydifferentenvironment
7、,likespace.There,astronautscan'ttalktoeachotherdirectly.Theyalsocan'teatordrinkinnormalways.Theycan'tevenburp(打嗝),becausethereisnogravitytoholdthefooddownintheirstomach.Iftheydoburp,theyjustendupthrowingup(呕吐)everythingintheirstomach,accordingtotheUKNational
8、SpaceCenter. Thus,perhapsit'sonlyspaceexplorerswhocanhonestlysay:"Gravity,you'rethebest."1.Whatcanweconcludefromparagraphs2and3? A.Astronautsareunabletofeelsadinspace. B.Astronautsproducefew
