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时间:2019-04-22
《2019版高考英语一轮复习unit1greatscientists夯基提能作业新人教版》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
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
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