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ID:19584945
大小:2.38 MB
页数:28页
时间:2018-10-03
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1、Mostofusalmostenjoyedthefairytale—alovestoryhappeningbetweenNiulang,aherdboy,andZhinü,thedaughteroftheGoddessofHeaven,whenwewerekids.WeallthoughtthattheyhadatragicexperienceandtheGoddessofHeavenwastoocruel.Sheusedarivertomakethecoupleseparatefromeachotherwithoutmercy.Wecalledtheriver“theMilk
2、yWay”.Wehateditbecauseitstoppedthemfrommeetingeachother.Ofcourse,thereisaMilkyWayinuniverse.WhatistheMilkyWaylike?Howoldisit?【参考答案】TheMilkyWayisalargespiralgalaxy(螺旋星系)measuringabout100,000light-yearsacross.Itisabout14billionyearsold.古今中外的历史上有很多的科学家致力于探索宇宙的奥秘。意大利的科学家伽利略·伽利雷(1564-1642)就是其中非常著
3、名的一位。他是文艺复兴后期伟大的天文学家、力学家、哲学家、物理学家、数学家,也是近代实验物理学的开拓者,被誉为“近代科学之父”。让我们更细致地了解他吧。GalileoGalileiwasbornnearPisain1564—thesameyearinwhichShakespearewasbornandtheyearinwhichMichelangelo(米开朗基罗)andCalvin(加尔文)died.HeenteredPisaUniversityasamedicalstudentin1581,andbecameaprofessorofmathematicsatPadua(15
4、92~1610),whereheimprovedthetelescope1andwasthefirsttouseitforastronomy.AtthetimethatGalileoarrivedattheUniversityofPisa,someargument2hadstartedupononeofAristotle’s(亚里士多德的)“laws”ofnature,whichheavierobjectsfallfasterthanlighterones.ImagineAristotleatthetopofabuilding,dropping3twoballs,onetwic
5、easheavyastheother.Accordingtohiswords,theheavieroneshouldfallfasterthanthelighterone.AtthattimeAristotle’swordshadbeenacceptedasatruth,andtherehadbeenfewattempts4toactuallytestAristotle’sconclusionsbyactuallyconducting5anexperiment!However,Galileodecidedtohaveatry.Heneededtobeabletodroptheo
6、bjectsfromagreatheight.Theperfectbuildingwasrightathand—theTowerofPisa,54meterstall.Galileoclimbedtothetopofthebuildingcarryingavarietyofballsofdifferentsizesandweights,anddroppedthemfromthetop.Theyalllandedatthebaseofthebuildingatthesametime(itwassaidthattheexperimentwaswitnessed6byahugecro
7、wdofstudentsandprofessors).ItprovedthatAristotlewaswrong.Nomatterwhatthedifferenceisinweight,objectswillfallatthesamespeed.阅读短文,判断下列句子对(T)错(F)。1.GalileoandShakespearewerebornatthesameyear.(T)2.ItwasinPisaUniversitythatGalileoimprovedthetelescope.(F
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