【題目】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：一旦程序被輸入電腦，它就會(huì)采取相應(yīng)的行動(dòng)。考查動(dòng)詞時(shí)態(tài)辨析題。時(shí)間狀語(yǔ)從句或者條件狀語(yǔ)從句中用一般現(xiàn)在時(shí)或現(xiàn)在完成時(shí)，主句用一般將來(lái)時(shí)。once一旦，表?xiàng)l件；根據(jù)句意結(jié)構(gòu)，可知選C。

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