One more try, ______ you will succeed.

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问题 One more try, ______ you will succeed.

选项 A、and
B、but
C、or
D、so

答案A

解析 考查and的用法。当and连接一个祈使句和陈述句时,它前面的祈使句表示条件,相当于if引导的条件状语从句。例如:Drop a stone into the river, and you will see ripples go out in a11 directions. (如果向河中投一块石头,你就会看到水波向四处漾开。)有时,and前用一个名词或名词短语,也起到同样的作用。例如:Few minutes earlier, and you would have caught the train. (如果早几分钟的话,你们就会赶上这班车了。)而or相当于if not,与题意不符;but与so没有此类用法。
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