外研版高中英语课文文本 必修一 Module 5 Reading.doc

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1、TheInternetisthebiggestsourceofinformationintheworld,andit'saccessiblethroughacomputer.Itconsistsofmillionsofpagesofdata.In1969,DARPA,aU.S.defenceorganisation,developedawayforalltheircomputersto"talk"toeachotherthroughthetelephone.TheycreatedanetworkofcomputerscalledDARPANET.Forfifteenyear

2、s,onlytheU.S.armycouldusethissystemofcommunication.Thenin1984,theU.S.NationalScienceFoundation(NSF)startedtheNSFNETnetwork.Itthenbecamepossibleforuniversitiestousethesystemaswell.NSFNETbecameknownastheInter-Network,or"Internet".TheWorldWideWeb(theweb)isacomputernetworkthatallowscomputeruse

3、rstoaccessinformationfrommillionsofwebsitesviatheInternet.Atthemoment,about80percentofwebtrafficisinEnglish,butthispercentageisgoingdown.By2020,muchwebtrafficcouldbeinChinese.TheWorldWideWebwasinventedin1991byanEnglishscientist,TimBerners-Lee.Berners-Leebuilthisfirstcomputerwhilehewasatuni

4、versityusinganoldtelevision!HecameupwiththeideaoftheWorldWideWebin1989whilehewasworkinginSwitzerland.Berners-LeemadeitpossibleforeveryonetousetheInternet,notjustuniversitiesandthearmy.Hedesignedthefirst"webbrowser",whichallowedcomputeruserstoaccessdocumentsfromothercomputers.Fromthatmoment

5、on,thewebandtheInternetgrew.Withinfiveyears,thenumberofInternetusersrosefrom600 000to40million.TheInternethascreatedthousandsofmillionaires,butBerners-Leeisnotoneofthem.EveryoneintheworldcanaccesstheInternetusinghisWorldWideWebsystem.HenowworksasalectureratMassachusettsInstituteofTechnolog

6、yinBoston.