很久很久以前 ,流传着这样的一则故事 :Ａ、Ｂ、Ｃ三人 ,为了解决他们之间无法调解的冲突 ,决定用手枪进行决斗 ,直到只剩下一个人活着为止 .Ａ的枪法最差 ,平均3次只有 1次击中目标 ;Ｂ稍好一些 ,平均3射 2中 ;Ｃ最好 ,能百发百中 .为了使决斗比较公平 ,他们让Ａ第一个开枪 , A long time ago, there was a story about this: A, B, and C. In order to resolve the conflict they could not mediate, they decided to fight with a pistol until only one person survived. A’s shooting was the worst On average, only three hits hit the target three times; B was slightly better and averaged three shots and two shots; C was the best and could make hundreds and hundreds. In order to make the duel fair, they let A shoot the first one.