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页数:5页
时间:2019-05-25
《职称英语考试-阅读判断练习题及答案》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、阅读判断(第1~7题,每题1分,共7分) 下面的短文后列出了7个句子,请根据短文的内容对每个句子做出判断:如果该句提供的是正确信息,请选择A;如果该句提供的是错误信息,请选择B;如果该句的信息文中没有提及,请选择C. BlackHoles Mostscientistsagreethatblackholesexistbutarenearlyimpossibletolocate.Ablackholeintheuniverseisnotasolidobject,likeaplanet,butitisshapedlikeasphere(球体)。Astronomers(
2、天文学家)thinkthatatthecenterofablackholethereisasinglepointinspacewithinfinite(无限的)density(稠密)。Thissinglepointiscalledasingularity(奇点)。Ifthesingularitytheoryiscorrect,itmeansthatwhenamassivestarcollapses,allthematerialinitdisappearsintothesingularity.Thecenterofablackholewouldnotreallybea
3、holeatall,butaninfinitelydensepoint.Anythingthatcrossestheblackholeispulledinbyitsgreatgravity. Althoughblackholesdoexist,theyaredifficulttoobserve.Thesearethereasons. ●Nolightoranythingelsecomesoutofblackholes.Asaresult,theyareinvisibletoatelescope. ●Inastronomicalterms,blackholesa
4、retruly.Forexample,ablackholeformedbythecollapseofagiantstarwouldhaveaneventhorizon(视界)only18milesacross. ●ThenearestblackholeswouldbedozensoflightyearsawayfromEarth.Onelightyearisabout6trillion(万亿)miles.Eventhemostpowerfultelescopescouldnotpickoutanobjectsosmallatsuchagreatdistance.5
5、 In1994theHubbleSpaceTelescopeprovidedevidencethatblackholesexist.Therearestillanswerstobefound,however,soblackholesremainoneofthemysteriesoftheuniverse. 1.Blackholesarepartofspace. A.RightB.WrongC.Notmentioned 2.Blackholesexistbutaredifficulttoobserve. A.RightB.WrongC.Notmentione
6、d 3.Thecenterofablackholeisempty. A.RightB.WrongC.Notmentioned 4.Theattractionoftwolargestarsleadstogravity. A.RightB.WrongC.Notmentioned 5.Thesunistheheavieststarintheuniverse. A.RightB.WrongC.Notmentioned 6.Thenearestblackholesarehundredsoflightyearsawayfromus. A.RightB.Wrong
7、C.Notmentioned 7.TheHubbleSpaceTelescopehelpsscientiststounderstandthenatureoftheuniverse. A.RightB.WrongC.Notmentioned 参考答案 1A2A3B4C5C6B7A阅读判断(第1~7题,每题1分,共7分)5 下面的短文后列出了7个句子,请根据短文的内容对每个句子做出判断:如果该句提供的是正确信息,请选择A;如果该句提供的是错误信息,请选择B;如果该句的信息文中没有提及,请选择C. Scotland:ALandofWisdom Inthe
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