题目

The Great Wall is famous, so every year _____people come to visit it.A. millionB. million ofC. millions of D. millions 答案:【答案】C【解析】试题分析:句意:长城很著名,所以每年数以万计的人们来长城参观。hundred,thousand million 等和具体数字连用,不加s,是具体数字。hundred,thousand million后加s,of,表示数百,数千,数百万,是模糊数字。结合句意,故选C计算:2ba•-4a24bc2=.
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