题目

Although many measures________，the world’s economy is still going down. A．were taken         B．have been taken C．will be taken       D．are taken   答案： B 考查动词的时态与语态。表示过去发生的动作对现在造成影响，所以用现在完成时；take与measures之间构成动宾关系，所以要用被动语态。

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