问题
问答题
The United States was also one of the very few countries that refused to sign the biodiversity treaty.
答案
参考答案：
解析：美国也是为数不多的几个拒绝签署“生物多样性条约”的国家之一。
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The United States was also one of the very few countries that refused to sign the biodiversity treaty.
参考答案：
解析：美国也是为数不多的几个拒绝签署“生物多样性条约”的国家之一。