◎ 题干
Not everyone has realized what________important part the balance of________nature plays in their life.
[     ]
A. an; the  
B. /; the
C. an; /  
D. the; /
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Not everyone has realized what________important part the balance of________nature plays in their life.[ ]A. an; theB. /; theC. an; /D. the; /…”主要考查了你对  【不定冠词】【零冠词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。