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问题: 英语题

The factory produces half a million pairs of shoes every year ,80 persant ( ) are sold abroad.
A.of which B.which of C.of them D.of that

解答:

A.of which
考察定语从句 非限制性
先行词 shoes , 意思是百分之八十的销 往国外

C.of them 如果后面是一个句号 就对了。

D.of that that 不能放在介词后
B.which of 错误说法