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外语
They had talked only for a few minutes______they found they were of different opinions.
They had talked only for a few minutes______they found they were of different opinions.
admin
2017-06-21
63
问题
They had talked only for a few minutes______they found they were of different opinions.
选项
A、unless
B、while
C、before
D、once
答案
C
解析
本题考查连词的用法。本题主句采用过去完成时,从句采用一般过去时,两者之间在时间上有明显的先后性。而从属连词before可以用于描述两个先后发生的事件,所以应选择C项。unless(除非)和once(一旦)通常引导条件句,时间上没有明显的先后性,所以排除A、D项。B项while的意思是“当……时,在……时”,连接的两个动词通常发生在同一时间,这与句意不符,故排除。
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本试题收录于:
大学英语三级A级题库大学英语三级分类
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大学英语三级A级
大学英语三级
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