下面说说我自己经历过的两件事。一次是课间活动的时候，五年级学生围着水泥球台，正在秩序井然地练习打乒乓球。忽然，一个学生走到我跟前报告说，张明把球拍带到班上去了。张明是班上体育委员，工作认真负责，我把班上的乒乓球拍交给他保管。但是近几天，张明时不时把球... Here are two things I have experienced myself. Once during the recess, fifth graders encircled the cement table and practiced table tennis in an orderly manner. Suddenly, a student came to me to report that Zhang took the racket to the class. Zhang Ming is a member of the class sports, work serious and responsible, I put the table tennis racket in his custody. But in recent days, Zhang Ming from time to time the ball ...