Only according to the directions can the medicine be quite effective. A．taking B．taken C．being taken D．having been taken 题目和参考答案——青夏教育精英家教网—

题目内容

Only ______according to the directions can the medicine be quite effective.

A．taking

B．taken

C．being taken

D．having been taken

【答案】

【解析】考查分词用法。Medicine与take之间构成被动关系，所以使用过去分词的形式，C表示正在被服用；D表示已经被服用；句意：只有根据说明书服用，这个要才相当有效。

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He said the research, published in the journal Nature, represented "significant progress" in the development of a full blown drug against the disease．

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