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1、Unit4I.ReadingComprehensionSectionAFastReadingTheInformationSuperhighway1AreyoutootiredtogotothevideostorebutyouwanttoseethemovieBeautyandtheBeastathome?Wanttolistentoyourfavoriteguitarplayer’slatestjazzcassette?Needsomenewreadingmaterial,likeamagazineorbook?Noproblem.Ju
2、stsitdowninfrontofyourhomecomputerorTVandenterwhatyouwant,whenyouwantit,fromanelectroniccataloguecontainingthousandsoftitles.2.YourschoolhasnoprofessorsofJapanese,alanguageyouwanttolearnbeforevisitingJapanduringthecomingsummerholiday.Don’tworry.Justsignupforthelanguageco
3、urseofferedbyaschoolinanotherdistrictorcity,havethelatesteditionofthecourseofferedbyaschoolinanotherdistrictorcity,havethelatesteditionofthecourseteachingmaterialssenttoyourcomputer,andattendbyvideo.Ifyouneedextrahelpwithatranslationassignmentoryourpronunciation,atutorca
4、ngiveyoufeedbackviayourcomputer.3Welcometotheinformationsuperhighway.4Whilenearlyeveryonehasheardoftheinformationsuperhighway,evenexpertsdifferonexactlywhatthetermmeansandwhatthefutureitpromiseswilllooklike.Broadlyspeaking,however,thesuperhighwayreferstotheunionoftoday’s
5、broadcasting,cable,video,telephone,andcomputerandsemiconductorindustriesintoonelargeall-connectedindustry.5Directingtheunionaretechnologicaladvancesthathavemadeiteasiertostoreandrapidlytransmitinformationintohomesandoffices.Fiber-opticcable,forexample—madeupofhair-thingl
6、assfibers—isatremendouslyefficientcarrierofinformation.Lasersshootinglightthroughglassfibercantransmit250,000timesasmuchdataasastandardtelephonewire,ortensofthousandsofparagraphssuchasthisoneeverysecond.6Thegreatlyincreasedvolumeandspeedofdatatransmissionthatthesetechnol
7、ogiespermitcanbecomparedtothewayinwhichahighwaywithmanylanesallowsmorecarstomoveatfasterspeedsthanatwo-lanehighway—hence,theinformationsuperhighway.7TheclosetthingtoaninformationsuperhighwaytodayistheInternet,thesystemoflinkedcomputernetworksthatallowsupto25millionpeople
8、in135countriestoexchangeinformation.8ButwhiletheInternetprimarilymoveswords,theinformationsuperhighwayw