问题
选择题
—What's that noise?
—Oh，I forgot to tell you.The new machine ________.
A．was tested
B．will be tested
C．is being tested
D．has been tested
答案
答案：C
考查时态和语态。根据语境判断，此处表示“新机器正在被检测”，因此此处用现在进行时的被动语态。
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