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语篇提能阅读理解APictureoursolarsystem.Inthecentre,there'sourstar,thesun.Orbitingthesunareeightplanets,includingEarth.Butwhataboutplanetsoutsideoursolarsystem?About15yearsago,scientistsdevelopedthetoolstodetectthese“exoplanets”.Sincethen,they'vespottedabout450.Mostofthefindingsincludeone,twoorthreeenormousgas­filledplanetsorbitingastar.ButonAugust24,2010,agroupofEuropeanscientistsannouncedanunusualdiscovery.Theysaythey'veidentifiedasolarsystemthat'ssimilartoours.Itconsistsofasmanyassevenplanetsorbitingasun­likestar.Thestarisover100lightyearsawayfromus.Thefiveplanetsthatthescientistsaremostcertainaboutarelarge—upto25timesthesizeofEarth.AccordingtoChristopheLovis,oneofthescientistsbehindthefinding,thesefiveplanetsaresimilartoNeptune(海王星).“They'remademainlyofrocksandice，”hesaid.“They'reprobablynotsuitableforpeopletolivein.”Therearealsosignsoftwomoreplanets.OneisthoughttobesimilartoSaturn(土星).Theothermaybethesmallestexoplaneteverspotted.It'sonlyslightlylargerthanEarth.Becauseit'ssoclosetoitsstar,thesmallplanettakesjustoveradaytoorbitit.Spottingfarawayplanetsischallenging.Theblazinglightgivenoffbythestartheyorbitmakestheplanetshardtosee.Thatiswhywecannotyetbe100%sureaboutthesesevenplanets.Thescientistshaven'tactuallyseenthem.Instead,theyusedapowerfultelescopetostudythestarforsixyears.Thestargavethescientistscluesabouttheplanetsthatorbitit.AccordingtoAlanBoss,ascientistwhowasn'tinvolvedwiththestudy,thismethodisbestfor“findingthebigguys”.But,hesaid,thediscoveryshowsspottingsmallerplanetsisalsopossible.“Thereallynicethingaboutfindingsystemslikethisisthatitshowsthere'remanymoreoutthere，”saysBoss.“MotherNaturereallyhadfunmakingplanets.”语篇解读欧洲科学家利用望远镜进行探测，观察发现了一个与太阳系相似的星系。1．Itisknownfromthepassagethatexoplanets________.A.areplanetsorbitingstarsotherthanthesunB.refertoalltheplanetsorbitingthesunC.areallstarsoutsideoursolarsystemD.includealltheplanetseverspottedintheuniverse答案与解析C细节理解题。根据第一段的“Inthecentre,there'sourstar,thesun.Orbitingthesunareeightplanets,includingEarth.Butwhataboutplanetsoutsideoursolarsystem？”和第二段首句可推断，exoplanets是指太阳系以外的行星，故选C项。2．InanothersolarsystemdiscoveredbytheEuropeanscientists,________.A.thestarorbitedbysevenplanetsisover100lightyearsfromthesunB.allthesevenplanetsaremuchlargerthanourearthC.noneofthesevenplanetsissuitableforpeopletoliveinD.fiveplanetsaremademainlyofrocksandice答案与解析D细节理解题。第四段介绍了科学家们比较确定的五颗行星的情况，根据该段的“They'remademainlyofrocksandice”可以判断选D项。3．WecaninferfromthepassagethatAlanBoss________.A.hasalwaysbeensupportingtheEuropeanscientistsB.believesusingatelescopetostudysmallstarsisalsopossibleC.thinkstheEuropeanscientists'discoveryisalittleunbelievableD.believestheremustbeanotherplanetwithhumanslivinginit答案与解析B推理判断题。根据倒数第二段Boss的话可知，Boss认为这种方法是最好的，同时他认为用望远镜观察小行星也是有可能的，故选B项。4．Thebesttitleforthepassageshouldbe“________”．A.ResearchontheSolarSystemB.DifficultyinStudyingMotherNatureC.Scientists'ContributionstotheUniverseD.ALotlikeOurSolarSystem答案与解析D主旨大意题。文章首先介绍欧洲科学家的发现——一个与太阳系相似的星系，结尾借AlanBoss之口道出了“像这样的太阳系之外的类似星系还有很多”，由此判断选D项。BFromthefirstuseoftherockettocarrysatellitesintospacetothesettingupofspacestations,humanbeingshavebeenputtinggreateffortsintospaceresearch.Andsofar,wehaveachievedmanysuccesses.Buttherearestillnumeroustasksinfrontofusandweshouldnotstoptryingtoprogress.Theinternationalspacestationisanimportantstepweshouldtakeinspaceexploration.Itisnotonlyhelpfulbutalsoessential.Itprovidesaproperspaceenvironmentformanyexperimentsthatwehavewantedtodoforalongtime.Itisalsoabasefortheobservationsoftheearthandtheuniverse.ItcouldalsobeanimportantbaseforlatertraveltotheMoonandMars.Inaword,ifwewanttoexplorespacemore,thefirstthingweshoulddoistosetupaspacestation.Asthespacestationcostsalotofmoney,itishardforonecountryalonetoestablishone.TheUSAseemstobetheonlycountrythathastheabilitytobuildaspacestationalone,andithastriedtodoso,butnotverysuccessful.Soitaggregatedmanyothercountriestoworkonittogether.Thoughitisstillextremelyexpensive,itismuchcheaperthandoingitalone.Itisreallyajobthatneedseveryone'seffortandwillbenefiteveryone.Butevenso,thefundsneededarestillabigproblem.AsfortheUSA,itseemsthatithastoomanythingstospenditsmoneyon.Althoughitistherichestcountryintheworld,ithasmuchdebteveryyear.Ithastomakearrangementsaboutitsfinance,andtrytofindabalanceinalltheseissues.5．Whatistheauthor'sattitudetowardsbuildinganddevelopingtheinternationalspacestation?A.Supportive.B.Doubtful.C.Critical.D.Dissatisfied.答案与解析A作者态度题。根据第一段中的“weshouldnotstoptryingtoprogress”和文中作者介绍国际空间站的重要性可知，作者对建设国际空间站持支持态度。6．FromParagraph2welearnthat________.A.thenecessityofbuildingtheinternationalspacestationisnotrealizednowB.manyexperimentshavebeendoneintheinternationalspacestationC.theinternationalspacestationisnecessaryforpeopletoexplorespacemoreD.peoplehavetravelledtoMarsfromtheinternationalspacestation答案与解析C细节理解题。根据第二段中的“Inaword,ifwewanttoexplorespacemore,thefirstthingweshoulddoistosetupaspacestation”可知，国际空间站是进行太空探索所必需的。7．WhichofthefollowingisNOTareasonforcountries'cooperationinbuildingtheinternationalspacestation?A.Itrequiresalotofmoney.B.Itneedsev