问题
选择题
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
答案：C
因为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。
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