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1、话题语篇专攻练13史地博览(二)(建议用时35分钟)Ⅰ.阅读理解A Nottoobig,nottoosmall.Nottoohot,nottoocold.Anewlydiscoveredplanetlooksjustrightforlifeasweknowit,accordingtoaninternationalgroupofastronomers.Circlingastarabout500lightyearsaway,theplanetcalledKepler-186fisaboutthesamesizeasEarth.Itgoesrounditsstarat
2、therightdistanceforliquidwateronthesurface.Thatisanecessaryconditionforlife.ButitisnotexactlylikeEarth,it’smoreofanEarth’scousin.It’snotanEarth’stwin.ItsharesthesamecharacteristicsasEarth,buttheirparentstarsareverydifferent.Kepler-186fcirclesastarthatissmallerandcoolerthanoursun.Butth
3、eplanetappearstobeacloserrelativethanmostofthehundredsofothersdiscoveredsofar.Somearehugegas-coveredgiantswiththickatmospheres.Otherscircletoocloselytotheirstarsandaretoohotforlife.Forthefirsttime,wecanactuallysaywenowhaveaplanetthatisbothEarth-sizedandcirclesinitsstar’slivablezone.Th
4、enextstepwouldbetolookforsignsoflifeintheatmospheresofthesedistantworld.Thatwouldtakeamoreadvancedtelescope.Butbudgetcutsthreatenthattask,saysUniversityofCaliforniaatLosAngelesastrophysicistBen.“Intheory,wecoulddothisinthenextcoupleofdecades.Butinpractice,becausethere’snomoney,it’snot
5、goingtohappen.It’snotgoingtohappeninmylifetime,forexample,”saidBen.However,NASA’sElisaQuintanabelievesthatwhenthenext-generationspacetelescopeisused,itwillfindthatwearenotaloneintheuniverse.Inthemeantime,thesearchcontinuesforotherworldswherelifemayfindahome.【文章大意】本文介绍了一个新发现的适合生命生存的星球。
6、81.Whatdoweknowaboutthenewlydiscoveredplanet?A.Itwasdiscoveredbychance.B.Ithassomeformoflifeonit.C.Ithassuitableconditionsforlife.D.Itisanordinaryplanetlikeothers.【解析】选C。细节理解题。根据第一段Anewlydiscoveredplanetlooksjustrightforlifeasweknowit...可知,这个星球适合生命生存。2.ThedifferencebetweenEarthandKepl
7、er-186fisthat______.A.theycircledifferentparentstarsB.theycameintobeingatdifferenttimesC.theymoveinspaceatadifferentspeedD.theyorbittheirstarsatadifferentdistance【解析】选A。细节理解题。根据第二段ItsharesthesamecharacteristicsasEarth,buttheirparentstarsareverydifferent.可知它们的不同在于——它们围绕着不同的恒星旋转。3.Thedi
8、scove
