问题描述：
[单选]
The police are trying to（）what really happened．
A．ascertain
B．assert
C．avert
D．ascribe
参考答案：查看无
答案解析：无
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答案解析：无
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上一篇：Anyone not paying the registration fee by the end of this month will be（）to have withdrawnfrom the program．
下一篇：He said that ending the agreement would（）the future of small or family-run shops， lead tofewer books being published and increase prices of all but a few bestsellers．
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