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单选题
None of us knew how the change had come _____.
A

across

B

about

C

over

D

down


参考答案

参考解析
解析:
句意:我们当中没人知道这个改变是怎么发生的。此题考查动词词组。come about出现,发生。此项符合句意,答案选B。come across偶然遇到。come over过来;顺便来访。come down下来,下落。
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