单选题
At the______ moment, people from all corners of the country offered their help to the earthquake survivors.
A、
meaningful
B、
critical
C、
beneficial
D、
useful
【正确答案】
B
【答案解析】
解析:critical:关键的,危急的;符合句意。meaningful:充满意义的;beneficial:有益的,有利的;useful:有用的。
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