搜题，就来丰阳塔题库【问题】 Aftertraveling203days，coveringadistanceofmorethan470millionkilometers，NASA'sPerseveranceautomaticrobotfinisheditslongjourney，reachingthedestination-Mars. ThegoalofPerseveranceisanareacalledTheLake，whichwaschosenonthebasisoftheresearchcarriedoutinrecentyea
Aftertraveling203days，coveringadistanceofmorethan470millionkilometers，NASA'sPerseveranceautomaticrobotfinisheditslongjourney，reachingthedestination-Mars. ThegoalofPerseveranceisanareacalledTheLake，whichwaschosenonthebasisoftheresearchcarriedoutinrecentyears.ResearchersbelievethatalongtimeTheLakehousedariver，whichflowedintoalake.Therover（巡航器），aboutthesizeofanSUV，willhavetoperformarathercomplexmaneuver（机动）inafewminutestoslowdownitsrunandreachtheMartiansurface.Ifallgoesasplanned，Perseverancewillhelpusanswerthequestionofquestions：WasthereeverlifeonMars？ Amongthemanythingsthatcanbedoneinoursolarsystem，makingacontrolledlandingonMarsisoneofthemostcomplicated.TheMartianatmosphereisthinnerthantheEarth'sandconsequentlyanobjectpassingthroughitdoesnotslowdownmuch.Thetimetoentertheatmosphere，descend（下降）andlandisrelativelyshort，nottomentionthatthegreatdistancefromtheEarth（onaverage254millionkilometers）makesdirectcontrolimpossible.Inthose"sevenminutesofterror"，asNASAdefinesthem，Perseverancewillhavetodoeverythingbyitselfwithitson-boardsystemsandwithoutthepossibilityofinterventionsandcorrectionsfromthecontrolcenter. Allofthiswillhappenautomaticallyand，ifallgoesaccordingtotheplan，PerseverancewillbesafeandsoundonMarsat9：55pm（Italiantime）.However，Marsisveryfarfromusandonlyafter12minuteswillweknowifithasallgoneaccordingtoplan.Perseverancewillsendasignalwhenitbeginsitsdescenttotheplanet，butbythetimewereceiveit，theroverwillhavefinishedits"sevenminutesofterror"andwillhavebeenonthesurfaceforfiveminutes.Inthefollowinghours，hisinstrumentswillsenddataandfootageofthelanding，withneverbeforeseenprospectsofanarrivalontheplanet.（1）WhydotheresearcherschooseTheLakeasthelandingfield？______A.ItwillbeeasierfortheSUVtorunonthesurfaceB.ItwillhelptoexplorewhethertherewaslifeonMars.C.Therovercanfindwaterresourcetheretopoweritsengine.D.TheLakeonMarsisthenearestplacetoourearth.（2）Whatdoestheunderlinedphrase"sevenminutesofterror"inParagraph3.referto？______A.Thedirectcontrol.B.Thelanding.C.ThesystemupdatingD.TheNASA'sreport.（3）Whatcanweinferfromthelastparagraph？______A.Wewillgetthesignalwhentheroverdescendsat9：55pm.B.Perseverancewillsendthesignalimmediatelyafteritslanding.C.It'sthefirsttimefortherovertosendthedataandfootage.D.Perseveranceneeds12minutestofinishthelanding.（4）Whatisthepassagemainlyabout？______A.TheexplorationofPerseveranceonMars.B.ThearrivalofPerseveranceonMars.C.NewfindingsofPerseveranceonMars.D.WorkingprinciplesofPerseveranceonMars.
正确答案：（1）B. 细节理解题。根据原文第二段 If all goes as planned，Perseverance will help us answer the question of questions： Was there ever life on Mars？（如果一切按计划进行，"毅力"将帮助我们回答诸多问题中的问题：火星上曾经有生命吗？）可知是为了探测那个位置是否曾经存在生命。B. It will help to explore whether there was life on Mars.（它将有
题目解析：
本文是一篇说明文。本文讲述的美国国家航空航天局的火星探测器"毅力号"在经过203天、4.7亿多公里的旅行后，成功抵达火星，并介绍了其登陆火星过程中遇到的困难。
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