成人英语三级

单选题 It won´t be long __________ the modern communications spread over all the villages in china.

A.when
B.before
C.until
D.as

参考答案:A进入在线模考
【参考译文】现代化通讯将遍及中国广大山村地区,这个时间不会太远了。
【答案解析】本题考查定语从句。先行词it表示时间,用when这个表示时间的关系 副词来引导从句。

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