家长来信:我家的儿子今年初二了,从开学就开始嚷嚷累,说晚上睡不着,必须得戴上眼罩、塞上耳塞,而且家里不能有一点响声和光亮,否则就会一夜无眠。这样第二天的上课效率很低,头痛也听不进课,头脑整天昏昏沉沉,这样的情况已经快持续三个月了。之前从小学到初一成绩都非常优秀,一直是班干部,学习从来没有让我操心,现在成绩不仅下降了,人 Letter from my parents: My son was on the second day of this year. He started to shout tired from school. He said he could not sleep at night. He had to put on his goggles, put on earplugs, and could not have a little noise and light at home. Otherwise, he would have no sleep overnight. This second day of class efficiency is very low, headaches can not be heard into the class, the mind was drowsy all day, this situation has been going on for almost three months. Before from the elementary school to the first grade are very good, has been a class cadre, learning never let me worry about, now not only the decline in performance, people