2019版高考英语一轮复习 unit 1 great scientists夯基提能作业 新人教版必修5

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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.Neithercouldotherscientistswhodealtwithsu

2、chproblems.However,HalleyhadafriendnamedIsaacNewton,whowasabrilliantmathematician.Newtonthoughthehadalreadyworkedoutthatproblem,buthecouldnotfindthepapersonwhichhehaddoneit.HetoldHalleythattheorbitofacomethadtheshapeofanellipse(椭圆形).ThenHalleysetouttowork.Hefiguredout(计算出)theorbitsofsomeofthecomet

3、sthathadbeenobservedbyotherscientists.Hemadeasurprisingdiscovery.Thecometsthathadappearedintheyears1531,1607,and1682allhadthesameorbit.Yettheirappearancehadbeen75to76yearsapart.Itseemedverystrangethatthreedifferentcometsfollowedthesameorbit.ThemoreHalleythoughtaboutit,themorehethoughtthattherehadn

4、otbeenthreedifferentcometsaspeoplethought.Hebelievedthattheyhadsimplyseenthesamecometthreetimes.Thecomethadgoneawayandhadcomebackagain.Itwasanastonishingidea!Halleyfeltcertaintomakeaprediction(预言)ofwhatwouldhappeninthefuture.Hepredictedthatthiscometwouldappearintheyear1758.Therewouldbe53yearstogob

5、eforeHalley’spredictioncouldbetested.In1758thecometappearedinthesky.Halleydidnotseeit,forhehaddiedsomeyearsbefore.EversincethenthatcomethadbeencalledHalley’sCometinhishonor.1.EdmundHalleydiscovered　　　. A.somedifferentcometsappearingseveraltimesB.thesamecometappearingindifferentorbitsC.threediffere

6、ntcometsappearinginthesameorbitD.severalcometsappearingatthesametime2.Halleymadehisdiscovery　　　. A.bydoingexperimentsB.bymeansofhisowncarefulobservationC.byusingtheobservationsofotherscientistsD.bychance3.Halleymadeasurprisingbutcorrectpredictionintheyear　　　. A.1704B.1705C.1706D.17074.Thispassagei

7、ngeneralisabout　　　. A.HalleyandotherscientistsB.theorbitofacometC.NewtonandHalleyD.HalleyandhisdiscoveryⅡ.七选五(2018安徽合肥高三调研)HowtoSetGoalsWhetheryouhavesmalldreamsorhighexpectations,settinggoalsallowsyoutoplanhowyo