Computers can do nothing.But once ______what to do, they show extraordinary powe
题型:不详难度:来源:
Computers can do nothing.But once ______what to do, they show extraordinary power to do a great deal.A.to program | B.being programmed | C.programmed | D.having programmed |
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答案
C |
解析
考查非谓语动词。动词program和逻辑主语they之间是动宾关系,且program发生在主句动词之前,要用过去分词表被动和完成,所以选C。 |
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