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1、Unit4I.ReadingComprehensionSectionAFastReadingTheInformationSuperhighway1AreyoutootiredtogotothevideostorebutyouwanttoseethemovieBeautyandtheBeastathome?Wanttolistentoyourfavoriteguitarplayer’slatestjazzcassette?Needsomenewreadingmaterial,likeamagazineorbook?Noproblem.J
2、ustsitdowninfrontofyourhomecomputerorTVandenterwhatyouwant,whenyouwantit,fromanelectroniccataloguecontainingthousandsoftitles.2.YourschoolhasnoprofessorsofJapanese,alanguageyouwanttolearnbeforevisitingJapanduringthecomingsummerholiday.Don’tworry.Justsignupforthelanguage
3、courseofferedbyaschoolinanotherdistrictorcity,havethelatesteditionofthecourseofferedbyaschoolinanotherdistrictorcity,havethelatesteditionofthecourseteachingmaterialssenttoyourcomputer,andattendbyvideo.Ifyouneedextrahelpwithatranslationassignmentoryourpronunciation,atuto
4、rcangiveyoufeedbackviayourcomputer.3Welcometotheinformationsuperhighway.4Whilenearlyeveryonehasheardoftheinformationsuperhighway,evenexpertsdifferonexactlywhatthetermmeansandwhatthefutureitpromiseswilllooklike.Broadlyspeaking,however,thesuperhighwayreferstotheunionoftod
5、ay’sbroadcasting,cable,video,telephone,andcomputerandsemiconductorindustriesintoonelargeall-connectedindustry.5Directingtheunionaretechnologicaladvancesthathavemadeiteasiertostoreandrapidlytransmitinformationintohomesandoffices.Fiber-opticcable,forexample—madeupofhair-t
6、hinglassfibers—isatremendouslyefficientcarrierofinformation.Lasersshootinglightthroughglassfibercantransmit250,000timesasmuchdataasastandardtelephonewire,ortensofthousandsofparagraphssuchasthisoneeverysecond.6Thegreatlyincreasedvolumeandspeedofdatatransmissionthattheset
7、echnologiespermitcanbecomparedtothewayinwhichahighwaywithmanylanesallowsmorecarstomoveatfasterspeedsthanatwo-lanehighway—hence,theinformationsuperhighway.7TheclosetthingtoaninformationsuperhighwaytodayistheInternet,thesystemoflinkedcomputernetworksthatallowsupto25millio
8、npeoplein135countriestoexchangeinformation.8ButwhiletheInternetprimarilymoveswords,theinformationsuperhighwayw
