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1、Unit4SectionOneTacticsforListeningPart1SpotDictationStephenPowelson’sAmazingMemoryWhenStephenPowelsonwasnine,hisschoolorganizeda(1)weeklycontestinmemorizingpassagesfromtheBible.Stephenpaid(2)noattentionuntilhewaschided*for(3)notcompeting.ThenextSundayhesurprisedev
2、eryoneby(4)recitingallthepassagesforthe(5)entireyear.Asateenagerinprepschool,StephentookGreek.Histeacher(6)assigned21linesoftheIliad*tobememorized(7)inaweek.Attheendofthehour-thoughhe(8)insistedhepaidfullattentiontothe(9)lecture-Stephenknewall21.Hewentontomemorize
3、thefirst(10)100lines.In1978,forthefirsttime(11)sincecollege,Powelson,now60,hadsome(12)sparetime.Tokeephismindactive,herereadtheIliadand(13)discoveredthathestillknewthefirst100lines(14)byheart.Thatsomeonecouldmemorizesomuchbetweenages60and70is(15)astonishingtomostp
4、eople,whoare(16)convincedthatmemory(17)worsensaswegrowolder.Powelson'smethodisto(18)readabookintohistaperecorder,thenreaditseveralmoretimes,makingsureheunderstands(19)eachword."Also,"hesays,"Iattemptto(20)visualizemyselfaspartoftheaction."Part2ListeningforGistYoum
5、ightnotknowhowrarelyimagesarevieweddirectlythroughtelescopes.Themostcommonwaytoobservetheskiesistophotographthem.Theprocessisverysimple.First,aphotographicplateiscoatedwithalight-sensitivematerial.Theplateispositionedsothattheimagereceivedbythetelescopeisrecordedo
6、nit.Thentheimagecanbedeveloped,enlarged,andpublishedsothatmanypeoplecanstudyit.Becausemostastronomicalobjectsareveryremote,thelightwereceivefromthemisratherfeeble.Butbyusingatelescopeasacamera,longtimeexposurescanbemade.Inthisway,objectscanbephotographedthatareahu
7、ndredtimestoofainttobeseenbyjustlookingthroughatelescope.ExerciseDirections:Listentothedialogueandwritedownthegistandthekeywordsthathelpyoudecide.1)Thisdialogueisabouthowtophotographastronomicalobjects.2)Thekeywordsarephotograph,coated,light-sensitivematerial,posi
8、tioned,received,recorded,developed,enlarged,published,remote,feeble,telescope,camera,longexposures.SectionTwoListeningComprehensionPartoneDialogueTunisi
