第一部分
Ⅰ.阅读理解选修七
AModule1-2
(2015·太原市高三二模)导学号02280934
Washington:NASAhasannouncedevidencethatJupiter'slargestmoon,Ganymede,hasasaltwateroceanunderitsicysurface.TheoceanseemstohavemorewaterthanallthewateronEarth'ssurface,accordingtonewHubbleobservation.
NewHubbleobservationsofGanymede'smagneticfieldstronglysuggestthatthemoon,whichisthelargestinourwholesolarsystem,ishometoasubsurfaceocean.
Scientistsestimatetheoceanis95kilometersthick,whichisabout10timesdeeperthanEarth'soceans.Butunlikeoursaltywaters,Ganymede'soceanisburiedunder150kilometersofice.
Whilescientistshavespeculated(推测)since1970saboutthepresenceofanoceanonGanymede—thelargestmooninoursolarsystem—untilnowtheonlyobservationalevidencecamefromabriefflybybytheGalileospacecraft,whichdidn'tobservethemoonlongenoughtoconfirmaliquidocean.
Thisdiscoverymarksanimportantmilestone,highlightingwhatonlyHubblecanaccomplish.Inits25yearsinorbit,Hubblehasmademanyscientificdiscoveriesinourownsolarsystem.AdeepoceanundertheicysurfaceofGanymedeopensupfurtherexcitingpossibilitiesforlifebeyondEarth.thelifethatmightcomewithliquidwater.
HubbleisatelescopethatorbitsEarth,butbecauseofitsimpressivegravitationalanalysesitcanbeusedtostudytheinsideoffardistantplanets.Usingthesesameprinciples,scientistscouldtheoreticallydetectoceansondistantplanetsaswell.
语篇解读：这是一篇关于天文知识的新闻报道。科学家们通过Hubble望远镜判断在木星上发现曾有海洋的存在，人们期待了更多的地球以外的生命存在。
1．WhatcanwelearnabouttheGanymedefromthepassage?
A．Itisaplanetwiththelargestmooninourwholesolarsystem.
B．Itsoceanaddstopeople'sexcitementaboutlifebeyondEarth.
C．ItwillbeusedbyNASAasabasefortheHubbletelescope.
D．ItsliquidoceanwasfirstprovedbytheGalileospacecraft.
答案：B细节理解题。根据通过第五段中“AdeepoceanundertheicysurfaceofGanymedemoonorbitingJupiter,andNASAhasannouncedplanstosendanunmannedmissiontheresearchingforopensupfurtherexcitingpossibilitiesforlifebeyondEarth.”可知海洋增加了人们关于地球以外的生命的兴奋。故选B。
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