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填空题英语四级

2008-11-14

they are found only in places where they can live　10　with the least effort.

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【解析】选[N]。此句句子结构完整，故应填一副词，[N]successfully入选。此句是说，许多生物必须使它们的身体适应周围的环境，因为它们只能适应几种特殊的环境，所以它们只有在某些能够成功存活的地方被发现，故答案为[N]。

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