It is clear that the whole world is passing through a social revolution in which a centra

It is clear that the whole world is passing through a social revolution in which a central must be taken by scientists and technologists.
A. process
B. attention
C. measure
D. part

A. processB. attentionC. measure(答案→)D. part解析：本题译文：显然，整个世界正经历着一场社会革命；科学家和技术人员必定是这场革命地主要参加者。take part in参加。

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