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单选题
95.They overcame all the difficulties and completed the project two months ahead of time,_________ is something we had not expected.
A
which
B
it
C
that
D
what
答案解析
正确答案：A
解析：
解析:
语法结构。which引导非限制性关系从句,对主句所表达的内容进行评价。若用that,就会导致句子堆砌,除非that前加but/and等连词。他们克服了所有的困难,提前两个月完成了那个项目,这是我们没有预料到的。
语法结构。which引导非限制性关系从句,对主句所表达的内容进行评价。若用that,就会导致句子堆砌,除非that前加but/and等连词。他们克服了所有的困难,提前两个月完成了那个项目,这是我们没有预料到的。
相关知识点：
提前完工，出乎意料
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