If stydent bring mobile phones to class,it will disturb the teacher and students.When students use mobile phones is harmful for their health.如果学生把手机带到课堂上会打扰老师和其他学生.当学生使用手机时,还会危害他们的健康.����Ҫȫ��Hear that now have many high school students in the long time of use headphones music or learn English, they appear symptoms and your very similar, I think you recently must be excessive use of headphones, this is not healthy, continue to use the ear of the chance to give you more serious, so I suggest you if can put the word of better not to use stereo headset, I wish you a speedy recovery, I hope the next time you letter has been solved because the excessive use headphones to the annoyance, yo u also find a better way to learn, wish your grade is more on one building!