【新课标高考】2018届高三英语总复习之回归教材：课时作业21

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1、课时作业21I」阅读理解（2017-河南省鹤壁市高级中学周练）EdmundHalleywasanEnglishscientistwholivedover200yearsago.Hestudiedtheobservationsofcomets（彗星）whichotherscientistshadmade・Theorbit（轨道）ofoneparticularcometwasaverydifficultmathematicalproblem.Hecouldnotfigureitout.Neithercouldotherscienti

2、stswhodealtwithsuchproblems.However,HalleyhadafriendnamedIsaacNewton,whowasabrilliantmathematician.Newtonthoughthehadalreadyworkedoutthatproblem,buthecouldnotfindthepapersonwhichhehaddoneit.HetoldHalleythattheorbitofacomethadtheshapeofanellipse（押fj圆形）・NowHalleysettow

3、ork.Hefiguredout（解决，计算出）theorbitsofsomeofthecometsthathadbeenobservedbyscientists.Hemadeasurprisingdiscovery.Thecometsthathadappearedintheyears1531,1607,and1682allhadthesameorbit.Yettheirappearancehadbeen75to76yearsapart・ThisseemedverystrangetoHalley.Threedifferentco

4、metsfollowedthesameorbit.ThemoreHalleythoughtaboutit,themorehethoughtthattherehadnotbeenthreedifferentcometsaspeoplethought.Hedecidedthattheyhadsimplyseenthesamecometthreetimes.Thecomethadgoneawayandhadcomebackagain.Itwasanastonishingidea!HalleyfeltcertaintomakeapTed

5、iction（预言）ofwhatwouldhappeninthefuture.Hedecidedthatthiswouldappearintheyear1758・Therewere53yearstogobeforeHalley'spredictioncouldbetested.In1758thecometappearedinthesky.Halleydidnotseeit,forhehaddiedsomeyearsbefore・EversincethenthatcomethadbeencalledHalley'scomet,in

6、hishonor.1・EdmundHalleyfiguredouttheorbitof・A.somedifferentcometsappearingseveraltimesB・thesamecometappearingatdifferenttimesC・threedifferentcometsappearingatthesametimeD・severalcometsappearingatthesametime2・Halleymadehisdiscovery・A.bydoingexperimentsB・bymeansofhisow

7、ncarefulobservationC・byusingtheworkingofotherscientistsD・bychance3・Halleymadeasurprising,butcorrectpredictionintheyear一■A・1704B.1705C.1706D・17074.Thispassageingeneralisabout・A.HalleyandotherscientistsB・theorbitofacometC・NewtonandHalleyD・Halleyandhisdiscovery答案与解析文章介绍

8、了哈雷和他的发现哈雷彗星，以及发现验证哈雷彗星的过程。1・B推理判断题。根据文章的第四段"Hedecidedthattheyhadsimplyseenthesamecometthreetimes”及上文提到的看彗星的吋间分别是1531年、1607年、1682年可