◎ 题干
_____ from the moon, our earth with water _____ seventy percent of its surface, appears as a blue ball.

A. Seen, covered
B. Seeing, covering
C. Seen, covering
D. Seeing, covered
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“_____ from the moon, our earth with water _____ seventy percent of its surface, appears as a blue ball. [ ]A. Seen, covered B. Seeing, covering C. Seen, cove…”主要考查了你对  【现在分词】【过去分词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。