weareallbusytalkingaboutandusing

WeareallbusytalkingaboutandusingtheInternet,buthowmanyofusknowthehistoryoftheInternet?ManypeoplearesurprisedwhentheyfindthattheInternetwassetupinthe1960s.Atthattime,computerswerelargeandexpensive.Computernetworksdidn'tworkwell.Ifonecomputerinthenetworkbrokedown,thenthewholenetworkstopped.Soanewnetworksystemhadtobesetup.Itshouldbegoodenoughtobeusedbymanydifferentcomputers.Ifpartofthenetworkwasnotworking,informationcouldbesentthroughanotherpart.Inthiswaycomputernetworksystemwouldkeeponworkingallthetime.AtfirsttheInternetwasonlyusedbythegovernment,butintheearly1970s,universities,hospitalsandbankswereallowedtouseit,too.However,computerswerestillveryexpensiveandtheInternetwasdifficulttouse.Bythestartofthe1990s,computersbecamecheaperandeasiertouse.Scientistshadalsodevelopedsoftwarethatmade"surfing"theInternetmoreconvenient.

Todayitiseasytogeton-lineanditissaidthatmillionsofpeopleusetheInterneteveryday.Sendinge-mailismoreandmorepopularamongstudents.TheInternethasnowbecomeoneofthemostimportantpartsofpeople'slife.

42.Scientistssetupanewnetworksystemto________.

A.makecomputerscheaper

B.makeitselfkeeponworkingallthetime

C.breakdownthewholenetworkD.makecomputersexpensive

43.AtfirsttheInternetwasonlyusedby________.

A.thegovernmentB.universitiesC.hospitalsandbanksD.schools44.

44.________made“surfing”theInternetmoreconvenient.

A.ComputersB.ScientistsC.SoftwareD.Information