一个班的学生中，总有好、中、差之分。一般说来，优生和“差生”只占全班学生的三分之一左右，绝大多数是中等生.他们既不出类拔萃，也不惹是生非，他们一般抱着“比上不足，比下有余”的学习、生活态度，但也有较强的自觉性和自我约束能力。这样，无形中老师们忽视了对他们的 Among the students in a class, there are always good, middle, and bad points. In general, eugenics and “poor students” only account for about one-third of the students in the class. The vast majority are middle-school students. They are neither outstanding nor prone to blame. They generally hold “more than enough, more than enough”. The attitude of study and life, but there is also a strong sense of self-discipline and self-discipline. In this way, teachers virtually ignored them.