of the water polluted. We must try to protect our environment.A．Two third; areB．Two third; isC．Two thirds; areD．Two thirds; is 题目和参考答案——青夏教育精英家教网—

_____ of the water _____ polluted. We must try to protect our environment.

A．Two third; are	B．Two third; is
C．Two thirds; are	D．Two thirds; is

解析试题分析：句意：三分之二的水杯污染了。我们必须尽力保护我们的环境。分数的表达方法：分子基数词，分母序数词，分子大于一，分母加s。water是不可数名词，谓语动词要用单数。故选D。
考点：考查分数的用法。

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