题目内容
He started to work dilligently _____ he came up with the idea of hybrid rice for the first time in the 1960’s.
A. at once B. the moment C. for the moment D. in no time
【答案】
B
【解析】略
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题目内容
He started to work dilligently _____ he came up with the idea of hybrid rice for the first time in the 1960’s.
A. at once B. the moment C. for the moment D. in no time
B
【解析】略