from the moon, our earth, with water seven percent of its surface, appears as a “blue ball”.A．Seeing

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from the moon, our earth, with water seven percent of its surface, appears as a “blue ball”.

A．Seeing…covered

B．Seen…covered

C．Seeing…covering

D．Seen…covering

题型：单选题难度：偏难来源：不详

答案

考查分词做状语和非谓语动词用法。分词做状语时，如果动词与后面的主语构成主动关系，就使用现在分词的形式，如果构成被动关系，就使用过去分词。本题的see与our earth构成被动关系，所以使用过去分词。With符合结构中water与cover构成主动关系，则使用现在分词的形式。句意：从月球上看，因为有水覆盖着，我们的地球似乎是一个蓝色的球。故D正确。

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from the moon, our earth, with water seven percent of its surface, appears as a “blue ball”.A．Seeing

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