(see)______from space, our earth, with water covering 70% of its surface, appear

游客2023-09-25 38

问题 (see)______from space, our earth, with water covering 70% of its surface, appears as a "blue planet".

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答案 Seen

解析第一个逗号之后是一个完整的句子，所以逗号前只作该句的某种成分，此处作状语。由于句子的主语our earth与see之间是被动关系，所以用过去分词表被动。

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