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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ANottoobig,nottoosmall.Nottoohot,nottoocold・Anewlydiscoveredplanetlooksjustrightforlifeasweknowit,accordingtoaninternationalgroupofastronomers.Circlingastarabout500lightyearsaway,theplanetcalledKepler-186fisaboutthesamesize
2、asEarth.11goesroundiIsstarattherightdistaneeforliquidwateronthesurface.Thatisanecessaryconditionforlife.ButitisnotexactlylikeEarth,it"smoreofanEarth"scousin.It'snotanEarth'stwin.ItsharesthesamecharacteristicsasEarth,buttheirparentstarsareverydifferent.Kep
3、ler-186fcirclesastarthatissmallerandcoolerthanoursun.Buttheplanetappearstobeacloserrelativethanmostofthehundredsofothersdiscoveredsofar.Somearehugegas-coveredgiantswiththickatmospheres.Otherscircletoocloselytotheirstarsandaretoohotforlife.Forthefirsttime,
4、wecanactuallysaywenowhaveaplanetthatisbothEarth-sizedandcirclesinitssta”slivablezone.Thenextstepwou1dbetolookforsignsof1ifeintheatmospheresofthesedistantworld・Thatwouldtakeamoreadvancedtelescope.Butbudgetcutsthreatenthattask,saysUniversityofCaliforniaatLo
5、sAngelesastrophysicistBen."Tntheory,wecoulddothisinthenextcoupleofdecades.Butinpractice,becausethere?snomoney,it"snotgoingtohappen.It，snotgoingtohappeninmylifetime，forexample,”saidBen.However,NASA"sElisaQuintanabelievesthatwhenthenext-generationspaceteles
6、copeisused,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。1.Whatdoweknowaboutthenewlydiscoveredplanet?A.Itwasdiscoveredbychance.B.Ithassomeformoflifeonit.C・Ithassuita
7、bleconditionsfor1ife.D.Itisanordinaryplanetlikeothers.【解析】选Co细节理解题。根据第一段Anewlydiscoveredplanetlooksjustrightforlifeasweknowit...可知，这个星球适合生命生存。2.ThedifferencebetweenEarthandKepler-186fisthat.A・theycircledifferentparentstarsB.theycameintobeingatdifferenttim
8、esC.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.ThediscoveryofKepler-1
