题目内容
【题目】The factory produces half a million pairs of shoes every year, _______80% are sold abroad.
A.of which
B.which of
C.of them
D.of whom
【答案】A
【解析】句意:这家工厂每年生产五十万双鞋,其中80%都被销售到了国外。由结构判断后面是非限制性定语从句,排除C选项,而B选项形式错误,D项whom指人,应该是指物用which,所以答案是A。
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