题目内容
【题目】About seventy percent of the earth with water.
A. is covering B. is covered C. are covering D. are covered
【答案】B
【解析】
试题句意：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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题目内容
【题目】About seventy percent of the earth with water.
A. is covering B. is covered C. are covering D. are covered
【答案】B
【解析】
试题句意：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。