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【题目】It's said that________of the water around the world________polluted.

A.two thirds; isB.two thirds; hasC.two third; areD.two thirds; have

【答案】A

【解析】

句意:据说世界上三分之二的水被污染。

考查分数表达法。分数表达法——分子用基数词,分母用序数词,分子大于1的时候,分母要加s,故排除C项;且根据句意可知,句子应为一般现在时的被动语态,其结构为be+done,故排除BD项;另外分数做主语时,句子的动词单复数要根据分数后所接的名词来确定,本句中water是不可数名词,所以动词应为单数,故排除C项,故选A

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