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

D


解析:

take part in參加。

本題譯文：顯然，整個(gè)世界正經(jīng)歷著一場(chǎng)社會(huì)革命；科學(xué)家和技術(shù)人員必定是這場(chǎng)革命地主要參加者。

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