Some people say that is harmful for those students who take cellphone in school,I think it depends.
Cellphone can be used in many ways for students,for example,calling,keeping or developing relationships with others,even playing game on it!
Most people know its advantages and disadvantages form their bosoms,for sometimes they didn't want to face it.
Teachers should point the way to usefulness in taking cellphone in school!
这很简单，说不能学习认真，可以打电话给父母，都是小学词汇
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