2. 外语
  3. ______ from space, the earth, with water______ seventy percent of its surface , looks like a "blue ball".

______ from space, the earth, with water______ seventy percent of its surface , looks like a "blue ball".

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问题 ______ from space, the earth, with water______ seventy percent of its surface , looks like a "blue ball".
选项 A、Seen; covered
B、Seeing; covering
C、Seeing; covered
D、Seen; covering
答案D
解析
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