【題目】Many people have fully realized it's important to keep __________ balance of __________ nature. Otherwise, humans will be punished by it.

A. a; the B. the; the

C. the; / D. /; /

【答案】C

【解析】句意：許多人充分認(rèn)識(shí)到保持自然平衡很重要。否則，人類將受到它的懲罰。keep the balance of 保持……的平衡;nature自然，前面不加冠詞。

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