If stydent bring mobile phones to class,it will disturb the teacher and students.When students use mobile phones is harmful for their health.如果學生把手機帶到課堂上會打擾老師和其他學生.當學生使用手機時,還會危害他們的健康.????????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!