70% of the earth -----covered with water.A.are B.is C.were D.being70% of the earth 是单数还是负数?

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70% of the earth -----covered with water.A.are B.is C.were D.being70% of the earth 是单数还是负数?
70% of the earth -----covered with water.A.are B.is C.were D.being
70% of the earth 是单数还是负数?

70% of the earth -----covered with water.A.are B.is C.were D.being70% of the earth 是单数还是负数?
单数.earth是地表,这里也可以理解为地球.地球的话,目前人类能探知的就这么一个了,即使理解字面意思地表的话,也是不可数的,所以一定是用is.答案是B~

B.
单复数的问题想想主语实际指的东西的意思。可数的东西显而易见，其他的就不可数。集合名词要单记，如cattle，但是如果你在记cattle的意思时就记的是“家畜们，包括一只只牛羊”，而不是光看有没有cattles，这样就很容易知道谓词用单数还是复数。这道题，表面积数不出来啊，所以就IS。...

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B.
单复数的问题想想主语实际指的东西的意思。可数的东西显而易见，其他的就不可数。集合名词要单记，如cattle，但是如果你在记cattle的意思时就记的是“家畜们，包括一只只牛羊”，而不是光看有没有cattles，这样就很容易知道谓词用单数还是复数。这道题，表面积数不出来啊，所以就IS。

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