题目内容
--Why does the lake smell terrible?
--Because large quantities of water _______.
A. have polluted B. is being polluted
C. has been polluted D. have been polluted
D
【解析】
试题分析:考查时态、语态和主谓一致。句意:湖里的水为什么如此难闻?--因为大量的水被污染了。根据第一句可知,湖水已经被污染了,应该用现在完成时表示对现在造成的影响(湖水变质),排除B;water与pollute是动宾关系,即水被污染,应该用被动语态,综合考虑,应该使用现在完成时的被动形式,即have/has been dine,排除A;a large quantity of和large quantities of既可修饰可数名词,也可修饰不可数名词;large quantities of+名词作主语,不管名词是否可数,谓语都用复数,排除C,故选D。
考点:考查时态、语态和主谓一致
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