【完形填空】Notverylong（1）,thecomputerwasastrangemachine.
【完形填空】
Notverylong（1）,thecomputerwasastrangemachine.Notmanypeopleunderstandit.Notmanypeoplesaid（2）toit.Today,muchofthatischanging.Thefirstcomputersystem（3）introducedforuseinbusinessinthemiddleof1950s.Sincethen,（4）numberofcomputersystemsusedinbusiness,governments,andinstitutions（5）grownrapidly.In1975,about250,000systemswerein（6）intheUnitedStates.Thisfigureisgrowing（7）tensofthousandseveryyear.
Computeris（8）importantfactorinourlives.Eachyearweusecomputermoreandmore（9）uscollectdataandprovideuswithinformation.Atonetime,peoplethoughtcomputerswereonlyusefulforbanks,departmentstores,andgovernments.（10）todaytheyareusedformanyotherpurposes.
1.A.agoB.beforeC.afterD.timeago
2.A.helloB.noC.yesD.goodbye
3.A.isB.areC.wereD.was
4.A.theB.aC.thelargeD.alarge
5.A.areB.hasC.hadD.was
6.A.useB.usefulC.theuseD.using
7.A.inB.toC.byD.at
8.A.anB.aC.theD./
9.A.helpB.tohelpC.provideD.for
10.A.SoB.ThenC.AndD.But