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 UID15248 帖子19457 积分58820 学分190082 个 金币1000 个 性别男 在线时间20296 小时 
       
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                 One day, the teacher inquired of Peter: "How much is four minus four?" Peter was tongue-tied.The teacher got angry and said: "What a fool! You see, if I put four coins in your pocket, but there is a hole in your pocket and all of them leak out, now what is left in your pocket?""The hole," replied Peter。 | 
 
                    
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