The USA has a quarter of the leading 200 in the latest ranking of the world universities, _________ ...
2022-11-03 14:41:03 19次 2014-2015学年山东滕州二中新校高三4月模拟英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The USA has a quarter of the leading 200 in the latest ranking of the world universities, _________ 30 of the universities are in the UK．
A．when B．while C．where D．why
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