第二单元ppt大学英语第六册精读

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1、TheQuestforExtraterrestrialIntelligenceUFOWiredUFOUnidentifiedFlyingObject(UFO)OuterSpaceAuthorCarlSagan（1934—1996）：AmericanauthorandprofessorofastronomyatCornellUniversity.HeisaleaderintheU.S.spaceprogramsinceitsbeginningandworkedasanadvisertoNASAsincethe1950s.Duringhislifetime,Saganpublish

2、edmorethan600scientificpapersandpopulararticles.Themajorityofhisbooksareaboutthepossibilityoflifeonotherworlds.StructurePart1:1-3whyandhowwearesearchingforextraterrestrialintelligence.1、Wewanttoknowthatwhetherthereareextraterrestrialintelligenceotherthanhumanbeingsexistinginthisuniverse.2、The

3、essenceofthesearching.3、Thetechnologyweareusing----radioastronomy.Part2:4-8Thequestforextraterrestrialintelligenceisalong-termandhardworkwhichrequiresasignificanteffort.4、Estimatingthenumberofadvancedtechnicalcivilizationsisveryhard.5、Thequestforextraterrestrialintelligencemayrequireasignific

4、anteffort.6、Amongthevarioustechniquesavailable,radioisbyfarthebest.7、Thefirstattemptwasmadein1959and1960,butwithnegativeresults.8、OtherprogramssinceProjectOzmaallobtainednegativeresults,whichindicatesalotmoreeffortsareneeded.Part3:9-12thepublicattitudetowardsthesubjectandtheauthor’sbeliefs.9、

5、Therehasbeenadramaticincreaseinthescientificandpublicrespectabilityoftheentiresubject.10、Whywehavenotseenextraterrestrialintelligenceiftheyareabundant.11、Thepsychologybehindthedespairedandthepossibleexplanationforwhywehaven’tbeenreachedbyotherextraterrestrialintelligence.12、Whattheauthorthink

6、saboutthequestionofextraterrestrialcivilizations.Wordsponderv.沉思,考虑Weponderedwhethertotellher.contemplatevt.注视,沉思,打算Itterrifiedmetocontemplatetheconsequenceofyouraction.exquisiteadj.精挑细选的,精致的,细腻的Thegirlcameupwithasetofexquisitestamps.astronomyn.天文学Physicsandastronomyarecognatesciences.spectru

7、mn.范围,系列,光谱Redandvioletareatoppositeendsofthespectrum.spectacularadj.壮观的,令人惊叹的Thecompanywouldsufferaspectacularcollapse.prematureadj.提前的,过早的,不成熟的Heventuredaprematureopinionatthemeeting.adolescentadj.青春期的,青少年的Herremarksseemedabitadolescent.Phr