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1、Unit4SectionOneTacticsforListeningPart1SpotDictationStephenPowelson’sAmazingMemoryWhenStephenPowelsonwasnine,hisschoolorganizeda(1)weeklycontestinmemorizingpassagesfromtheBible.Stephenpaid(2)noattentionuntilhewaschided*for(3)notcompeting.ThenextSundayhesurprisedeveryoneby(4)recitingallthepassagesf
2、orthe(5)entireyear.Asateenagerinprepschool,StephentookGreek.Histeacher(6)assigned21linesoftheIliad*tobememorized(7)inaweek.Attheendofthehour-thoughhe(8)insistedhepaidfullattentiontothe(9)lecture-Stephenknewall21.Hewentontomemorizethefirst(10)100lines.In1978,forthefirsttime(11)sincecollege,Powelson
3、,now60,hadsome(12)sparetime.Tokeephismindactive,herereadtheIliadand(13)discoveredthathestillknewthefirst100lines(14)byheart.Thatsomeonecouldmemorizesomuchbetweenages60and70is(15)astonishingtomostpeople,whoare(16)convincedthatmemory(17)worsensaswegrowolder.Powelson'smethodisto(18)readabookintohista
4、perecorder,thenreaditseveralmoretimes,makingsureheunderstands(19)eachword."Also,"hesays,"Iattemptto(20)visualizemyselfaspartoftheaction."Part2ListeningforGistYoumightnotknowhowrarelyimagesarevieweddirectlythroughtelescopes.Themostcommonwaytoobservetheskiesistophotographthem.Theprocessisverysimple.
5、First,aphotographicplateiscoatedwithalight-sensitivematerial.Theplateispositionedsothattheimagereceivedbythetelescopeisrecordedonit.Thentheimagecanbedeveloped,enlarged,andpublishedsothatmanypeoplecanstudyit.Becausemostastronomicalobjectsareveryremote,thelightwereceivefromthemisratherfeeble.Butbyus
6、ingatelescopeasacamera,longtimeexposurescanbemade.Inthisway,objectscanbephotographedthatareahundredtimestoofainttobeseenbyjustlookingthroughatelescope.ExerciseDirections:Listentothedialogueandwritedownthegistandthekeywordsthathelpyoudecide.1)Thisdialogueisabouthowtophotographastronomicalobjects.2)
7、Thekeywordsarephotograph,coated,light-sensitivematerial,positioned,received,recorded,developed,enlarged,published,remote,feeble,telescope,camera,longexposures.SectionTwoListeningComprehensionPartoneDialogueTunisi
