______ environmental damage is done, it takes many years for the ecosystem to recover.
A.Even if
B.If only
C.While
D.Once
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◎ 解析
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◎ 知识点
根据n多题专家分析,试题“______ environmental damage is done, it takes many years for the ecosystem to recover.A.Even ifB.If onlyC.WhileD.Once…”主要考查了你对 【状语从句】,【限制性定语从句】,【主语从句】,【同位语从句】 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。
◎ 相似题
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