“谭老师,管管你的宝贝儿子吧,你看看他上课时都干些啥!”数学老师怒气冲冲地将高举着两手的儿子推到我面前。正在备课的我,吃惊地抬起头来。见儿子的两只手上沾着些乱七八糟的东西,有作业本的碎片,有面巾纸屑,还有黏糊糊的不知是什么东西——两手的手心手背都是一样的,看起来非常脏。我赶快站起来问:“怎么回事?” “Tan teacher, control your baby son, you look at what he did in class!” Math teacher angrily put his hands up with my son in front of me. I was preparing lesson, looked up in surprise. See my son’s two hands stained with some mess of things, there are works of the debris, there are tissue paper dust, and sticky I do not know what it is - both hands of the palm back are the same, looks very dirty. I quickly stood up and asked: “what happened?”