2019-2020年高三英语总复习第一部分回归教材Unit1Greatscientists课时作业新人教版必修

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1、2019-2020年高三英语总复习第一部分回归教材Unit1Greatscientists课时作业新人教版必修Ⅰ.阅读理解(xx·河南省鹤壁市高级中学周练)EdmundHalleywasanEnglishscientistwholivedover200yearsago.Hestudiedtheobservationsofets(彗星)whichotherscientistshadmade.Theorbit(轨道)ofoneparticularetwasaverydifficultmathematicalproblem.Hecouldnotfigur

2、eitout.Neithercouldotherscientistswhodealtwithsuchproblems.However,HalleyhadafriendnamedIsaacNewton,whowasabrilliantmathematician.Newtonthoughthehadalreadyworkedoutthatproblem,buthecouldnotfindthepapersonwhichhehaddoneit.HetoldHalleythattheorbitofaethadtheshapeofanellipse(椭圆形)

3、．NowHalleysettowork.Hefiguredout(解决，计算出)theorbitsofsomeoftheetsthathadbeenobservedbyscientists.Hemadeasurprisingdiscovery.Theetsthathadappearedintheyears1531,1607,and1682allhadthesameorbit.Yettheirappearancehadbeen75to76yearsapart.ThisseemedverystrangetoHalley.Threedifferentet

4、sfollowedthesameorbit.ThemoreHalleythoughtaboutit,themorehethoughtthattherehadnotbeenthreedifferentetsaspeoplethought.Hedecidedthattheyhadsimplyseenthesameetthreetimes.Theethadgoneawayandhadebackagain.Itwasanastonishingidea!Halleyfeltcertaintomakeaprediction(预言)ofwhatwouldhapp

5、eninthefuture.Hedecidedthatthiswouldappearintheyear1758.Therewere53yearstogobeforeHalley'spredictioncouldbetested.In1758theetappearedinthesky.Halleydidnotseeit,forhehaddiedsomeyearsbefore.EversincethenthatethadbeencalledHalley'set,inhishonor.1．EdmundHalleyfiguredouttheorbitof_

6、_______.A．somedifferentetsappearingseveraltimesB．thesameetappearingatdifferenttimesC．threedifferentetsappearingatthesametimeD．severaletsappearingatthesametime2．Halleymadehisdiscovery________.A．bydoingexperimentsB．bymeansofhisowncarefulobservationC．byusingtheworkingofotherscien

7、tistsD．bychance3．Halleymadeasurprising,butcorrectpredictionintheyear________.A．1704B．1705C．1706D．17074．Thispassageingeneralisabout________.A．HalleyandotherscientistsB．theorbitofaetC．NewtonandHalleyD．Halleyandhisdiscovery答案与解析文章介绍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“He

8、decidedthattheyhadsimplyseenthesameetthreetimes”及上文提到的看彗星的时间分