◎ 题干
____ from space, the earth, with water ____ seventy percent of its percentage, looks a "blue ball".
[     ]
A. Seen; covered
B. Seeing; covering
C. Seeing; covered
D. Seen; covering
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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 space, the earth, with water ____ seventy percent of its percentage, looks a "blue ball". [ ]A. Seen; coveredB. Seeing; covering C. Seeing; co…”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。