【題目】Unluckily, not everyone has realized the important role the balance of nature _______ in their daily life.

A.makesB.playsC.actsD.does

【答案】B

【解析】

考查動詞辨析。句意：不幸的是，并不是每個人都意識到自然平衡在日常生活中的重要作用。play an important role in為固定用法，意為“在…當(dāng)中起重要作用”。根據(jù)句意，故選B。

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