______from space, our earth, with water covering 70% of its surface, appears as

游客2025-05-03 10

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

选项 A、See
B、Seeing
C、Seen
D、To be seen

答案 C

解析这是(过去)分词短语作状语，表示时间或条件，意思相当于when／if(it is) seen from space。

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