近日教育部办公厅印发了《关于加强中小学生手机管理工作的通知》。《通知》要求，中小学生原则上不得将个人手机带入校园。此举引发社会热议。有些人认为手机阻碍学生学习，还会导致视力退化网络沉迷等问题；有些人则认为互联网时代一味禁止手机不现实。请你以Should Teenagers Be Allowed to Use Smart Phones at School为题，谈谈你的观点，并说明理由（至少3条）。
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    Should Teenagers Be Allowed to Use Smart Phones at School

【考点】通知类．

【答案】Should Teenagers Be Allowed to Use Smart Phones at SchoolNowadays，more and more teenagers use mobile phones.Can middle school students use mobile phones at school？Different students have different opinions about it.
    Some students think they can use mobile phones at school.First，it's convenient for them to call their parents，teachers or friends.Second，they can search what they need on mobile phones.For example，they can look up new words and look through news.
    However，some students disagree.They think using mobile phones at school is a waste of time.Many students spend too much time on games and QQ.Besides，it's unhealthy for the mind and the body，such as hurting eyes，making some bad friends.
      In my opinion，students shouldn't use mobile phones at school.It's bad for our health and study.Using mobile phones too much，students are also prone to myopia.At the same time，it may make students rely too much on mobile phones instead of using their brains to think about problems.