题目内容

【题目】Once a programme put into a computer, it accordingly.

A. is; acts B. is being; is acting

C. has been; will act D. will be; acts

【答案】C

【解析】

句意：一旦程序被输入电脑，它就会采取相应的行动。考查动词时态辨析题。时间状语从句或者条件状语从句中用一般现在时或现在完成时，主句用一般将来时。once一旦，表条件；根据句意结构，可知选C。

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