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题目
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We understand _______small changes to our land can have a big impact upon our environment __________ as we know is vulnerable enough.
A.what; whichB.what; whereC.how; whereD.how; which

答案
A
解析
考查固定句式以及定语从句。因为small changes是名词短语,所以用what引导。第二空是考查定语从句。As we know 是插入语,可以省略,which指代先行词environment在句中做主语。句意:我们理解,对土地的小小的改变可能会对很脆弱的环境有很大的影响。
核心考点
试题【We understand _______small changes to our land can have a big impact upon our en】;主要考察你对句法等知识点的理解。[详细]
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