The maths problem was so difficult that none of us could . A．try it out B．work it out C．look it up D．work on it 题目和参考答案——青夏教育精英家教网—

题目内容

The maths problem was so difficult that none of us could ____.

A．try it out

B．work it out

C．look it up

D．work on it

【答案】

【解析】本题主要考查动词短语辨析，句意是这道数学题太难没人做得出来，look up查找；；work on从事；根据题意故选B

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