—Don’t you know your puter has been inflected with viruses? —Really？No wonder it hasn’t_______ as properly as before.A.managedB.controlledC.operatedD.appeared
网友回答
C解析operate用作不及物动词, 意思为 “操作,运转”，句意：难怪计算机不如以前运转地正常了。其他选项均与句意不符：manage管理；经营生意；处理事务；control控制；支配；管理；appear出现；显露；好像。