ManypeopleweresurprisedwhentheInternetwassetupinthe1960s.Atthattimecomputerswerelargeandexpensive.Computernetwork(网络)didn'tworkwell.Ifonecomputerinthenetworkbrokedownthenthewholenetworksystem(系统)stopped.Sopeopleneededtobuildanewnetworksystem.Ifpartofthenetworkwasnotworkingpeoplecoulduseanotherparttosendinformation.Inthiswaythecomputernetworksystemwouldkeeponworkingallthetime.

 Onlythegovernment(政府)usedtheInternetinthepastbutintheearly1970suniversitieshospitalsandbanksbegantouseit.Bythebeginningofthe1990scomputersbecamecheaperandeasiertouse.Scientistsalsodevelopedsoftwarethatmade"surfing”theInternetmoreconvenient(方便的).TodayitiseasytogetontheInternetanditissaidthatmillionsofpeopleusetheInterneteveryday.TheInternethasnowbecomeoneofthemostimportantpartsofpeople'slives.

根据短文内容，选择最佳答案。

( )1.TheInternethasahistoryof       .

   A.lessthanthirtyyears

   B.morethanfortyyears

   C.morethansixtyyears

   D.acentury

( )2.Inthe1960sonlywhen      workedwellthenetworkworkedwell.

   A.mostofthecomputers

   B.morethanhalfofthecomputers

   C.allthecomputers

   D.noneofthecomputers

( )3.In1979       couldusetheInternet.

   A.thegovernment   B.hospitals

   C.universities   D.alloftheabove

( )4.Theunderlinedword  "software"means

   A.硬件   B.掌上电脑C软件   D.网络

( )5.Thepassagemainlytellsus       .

   A.thehistoryoftheInternet

   B.thehistoryofthecomputers

   C.theuseoftheInternet

   D.theuseofthecomputers