高中英语 unit 4 Astronomy：the science of the stars课件 新人教版必修3.ppt

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1、成才之路·英语路漫漫其修远兮吾将上下而求索人教版·必修3(通用本)Astronomy：thescienceofthestarsUnit4话题导入Astronomyistheoldestscienceknowntoman.Thousandsofyearsagomanlookedatthestarsandwonderedabouttheheavens.Butmanwaslimitedbywhathecouldseewithhiseyesalone.TheGreeksstudiedastronomyover2,000yearsago.Theycouldseethesize,color,andbrig

2、htnessofstars.Theycouldseetheirplacesinthesky.Theywatchedthestarsmoveastheseasonschanged.ButtheGreekshadnotoolstohelpthemstudythestarryheavens.Eachnewtooladdedtothefilesofastronomy;ithelpedmanreachoutintospace.Untilthereweretelescopes(望远镜),manknewlittleaboutthemoon.TheydidnotknowthattheplanetcalledS

3、aturn(土星)hasringsaroundit.Theirsightwassolimitedthattheycouldnotseealltheplanets.Intheearly1700s,peoplethoughttherewereonlysixplanets.Beforethespectroscope(分光镜),mandidnotknowwhatkindofgasesareinthesunorotherstars.Withouttheradiotelescope(电波望远镜)wedidnotknowthatradionoisescomefromfaroutinspace.Today,a

4、stronomyisagrowingscience.Wehavelearnedmoreinthelastfiftyyearsthaninthewholehistoryofastronomy.1．Thepassagemainlytellsus________.A．thespectroscopehelpsmanknowwhatkindofgasesareinthesunandotherstarsB．thereareeightplanetsinspaceC．therewasmuchnoiseinspaceD．sciencecan'tgrowfastwithoutmoderntechnology答案：

5、D主旨大意题。文章第一段为主题段，此段的最后一句话为主题句，其他段都是围绕这一主题展开，故答案选D。2．Thousandsofyearsago，________.A．manwatchedthestarswiththeireyesB．telescopeshelpedmantostudythestarsC．manknewnothingabouttheskyD．manknewSaturnhasringsaroundit答案：A细节理解题。由第一段第二、三句话可知，在几千年前人们主要通过肉眼来观察星球。3．WhentheGreekswatchedthestars,theyknewallofthefol

6、lowingexcept________.A．thecolorofthestarsB．thesizeofthestarsC．themovementofthestarsD．whatthestarsweremadeof答案：D细节理解题。由第二段可知，只有D项的内容“星球是由什么组成的”没有提到。4．Mannowknows________.A．themoonhasringsarounditB．therearesixplanetsC．Saturn'sringscanbeseenbyhumaneyesD．radionoisescomefromfaroutinspace答案：D推理判断题。由第四段最后一

7、句可推知，现在人们已经知道无线电噪声来自遥远的外太空。