2019版高考英语一轮复习unit1greatscientists夯基提能作业新人教版

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1、Unit1　GreatscientistsⅠ.阅读理解(2017河南鹤壁高级中学9月周练)EdmundHalleywasanEnglishscientistwholivedover200yearsago.Hestudiedtheobservationsofcomets(彗星)whichotherscientistshadmade.Theorbit(轨道)ofoneparticularcometwasaverydifficultmathematicalproblem.Hecouldnotfigureitout.Neit

2、hercouldotherscientistswhodealtwithsuchproblems.However,HalleyhadafriendnamedIsaacNewton,whowasabrilliantmathematician.Newtonthoughthehadalreadyworkedoutthatproblem,buthecouldnotfindthepapersonwhichhehaddoneit.HetoldHalleythattheorbitofacomethadtheshapeofanelli

3、pse(椭圆形).ThenHalleysetouttowork.Hefiguredout(计算出)theorbitsofsomeofthecometsthathadbeenobservedbyotherscientists.Hemadeasurprisingdiscovery.Thecometsthathadappearedintheyears1531,1607,and1682allhadthesameorbit.Yettheirappearancehadbeen75to76yearsapart.Itseemedve

4、rystrangethatthreedifferentcometsfollowedthesameorbit.ThemoreHalleythoughtaboutit,themorehethoughtthattherehadnotbeenthreedifferentcometsaspeoplethought.Hebelievedthattheyhadsimplyseenthesamecometthreetimes.Thecomethadgoneawayandhadcomebackagain.Itwasanastonish

5、ingidea!Halleyfeltcertaintomakeaprediction(预言)ofwhatwouldhappeninthefuture.Hepredictedthatthiscometwouldappearintheyear1758.Therewouldbe53yearstogobeforeHalley’spredictioncouldbetested.In1758thecometappearedin7thesky.Halleydidnotseeit,forhehaddiedsomeyearsbefor

6、e.EversincethenthatcomethadbeencalledHalley’sCometinhishonor.1.EdmundHalleydiscovered　　　. A.somedifferentcometsappearingseveraltimesB.thesamecometappearingindifferentorbitsC.threedifferentcometsappearinginthesameorbitD.severalcometsappearingatthesametime2.Halle

7、ymadehisdiscovery　　　. A.bydoingexperimentsB.bymeansofhisowncarefulobservationC.byusingtheobservationsofotherscientistsD.bychance3.Halleymadeasurprisingbutcorrectpredictionintheyear　　　. A.1704B.1705C.1706D.17074.Thispassageingeneralisabout　　　. A.Halleyandothersc

8、ientistsB.theorbitofacometC.NewtonandHalleyD.HalleyandhisdiscoveryⅡ.七选五(2018安徽合肥高三调研)HowtoSetGoalsWhetheryouhavesmalldreamsorhighexpectations,settinggoalsallowsyoutoplanhowy