资源描述：
《高考英语一轮复习unit2robots单元检测卷新人教版选修》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、到乌蒙山区的昭通;从甘肃中部的定西，到内蒙古边陲的阿尔山，看真贫、知真贫，真扶贫、扶真贫，成为“花的精力最多”的事;“扶贫先扶志”“扶贫必扶智”“实施精准扶贫”Unit2RobotsⅠ.阅读理解EnteringSpace,astronautscangiveusafascinatingaccountofashuttleflight,describingthepressureofacountdownandlaunch,thecomplexitiesoflivingthedaysinthestrangeweightlessenvironment,t
2、hechallengesofworkinginspace,theemotionaleffectofseeingearthfromspace,thedramaofthemeteoriclanding.However,therearealsoplentyofthingsthatastronautscan’tdobecauseoftheirweightlessenvironment,andthat’sverysad.What’smore,theycan’tevenlettheirsadnessshow,becauseit’simpossibleto
3、cryinzerogravity.Ofcourse,astronautscanstillproducetears.Butcryingismuchmoredifficultinspace,reportedTheAtlanticinJanuary.Withoutgravity,tearsdon’tflowdownwardoutoftheeyesliketheydohereonEarth.Thismeansthatwhenyoucryinspace,yourtearshavenowheretogo—theyjuststicktoyoureyes.I
4、nMay2011,astronautAndrewFeustelexperiencedthisduringoneofhisspacewalks.“Tears,”hesaid,“don’tfalloffofyoureye…Theyjustkindofstaythere.”Besidesmakingyourvisionunclear,thiscanalsocausephysicalpain.BackonEarth,tearsaresupposedtobringcomforttotheeyes.Butthat’snotthecaseinspace.T
5、hespaceenvironmentdriesoutastronauts’eyes,andwhentearssuddenlywettheeyes,itcancausepainratherthancomfort.“Myrighteyeispainfullikecrazy,”Feusteltoldhisteammateduringthewalk.Sincegravitydoesn’tworkinspace,astronautsneedsomeextrahelptogetridofthetears.Feustelchosetorubhiseyesa
6、gainsthishelmettowipethetearsaway.Anotherchoiceistojustwait—“Whenthetearsgetbigenoughtheysimplybreakfreeoftheeyeandfloataround,”astronautRonParisetoldTheAtlantic.Therearelotsofsmallthings—thingslikecrying—thatwearesousedtoonEarth.Weusuallytakethemforgranted,untiltheybecomea
7、probleminatotallydifferentenvironment,likespace.There,astronautscan’ttalktoeachotherdirectly.Theyalsocan’teatordrinkinnormalways.Theycan’tevenburp（打嗝）,becausethereisnogravitytoholdthefooddownintheirstomach.Iftheydoburp,theyjustendupthrowingup（呕吐）everythingintheirstomach,acc
8、ordingtotheUKNationalSpaceCenter.Thus,perhapsit’sonlyspaceexplorerswhocanhonestlys
