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    精英家教网 > 初中英语 > 题目详情
    About seventy percent of the earth         with water.
    A．is coveringB．is covered C．are coveringD．are covered
    B

    试题分析：句意：地球大约70%的部分被水覆盖着。the earth做主语为不可数名词，所以谓语动词用单数形式，地球与水覆盖应该是动宾关系，所以用被动语态；故选B。
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