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  3. Nature’s ways of maintaining the balance are simple and easily understood. We learn from the passage that to maintain the balan

Nature’s ways of maintaining the balance are simple and easily understood. We learn from the passage that to maintain the balan

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问题 Nature’s ways of maintaining the balance are simple and easily understood.
We learn from the passage that to maintain the balance of nature, we will have to ______.
选项
答案conserve our natural resources
解析 细读文章最后一段可知，合理利用自然资源是维护生态平衡的重要方面。
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大学英语四级

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