一、问题的提出近年来,由于中等专业学校招生制度的放开及办学方向的多元化,技工类学校的生源越来越复杂,差生比例不断扩大,技工类学校成了初中毕业差生的集结地,出现了原生化的差生群。更为严重的是,这些各地汇聚的差生集中到一起之后,在恶习方面互相影响,形成“交叉感染”,使 First, the issue raised In recent years, due to the liberalization of the enrollment system of secondary vocational schools and the diversification of running direction, the source of skilled workers in schools is becoming more and more complex, the proportion of poor students is constantly expanding, and skilled workers have become junior high school graduates , There has been a poor group of biochemistry. What is even more serious is that these poor students who come together in different places gather together and then influence each other in bad habits to form a “cross infection” so that