◎ 题干
______from space, the earth, with water _____seventy percent of its surface looks like a blue ball.
A.Seen; coveredB.Seen; coveringC.Seeing; coveredD.Seeing; covering
◎ 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 space, the earth, with water _____seventy percent of its surface looks like a blue ball.A.Seen; coveredB.Seen; coveringC.Seeing; coveredD.Seeing;…”主要考查了你对  【现在分词的被动式】【现在分词】【不定式的被动式】【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。