班里最让我头疼的男孩赵伟，突然间像变了一个人似的：衣服干净了，头发短了，灰脖儿也不见了；在课堂上，他爱举手发言了，尽管问题大多回答得不很正确；最难能可贵的是，一向不守纪律的他居然管起别人来了，一本正经地叫人家遵守纪律。作为班主任，我当然很高兴，却百思不得? Zhao Wei, the boy who had the most headache in my class, suddenly became like a man: his clothes were clean, his hair was short, and his gray neck was gone. In the classroom, he said he would like to raise his hand in spite of the problem Most of the answers are not very correct; the most commendable is that he has always been unruly rule someone else came, solemnly call people to observe discipline. As a class teacher, of course, I am very happy, but baffled?