There are some primary schools and secondary schools stipulate that the student bring the cellphone to school is not allowed. There is a lot of discussion about whether the students use the cellphone is good or bad.有些中小学规定不允许学生把手机带到学校。这引发了很多讨论，学生使用手机是好是坏。The supporters think the cellphone is widely used today, the students usually keep themselves in touch with their parents or guardians via the cellphone any time. As for the security issue, the cellphone is necessary. On the other hand, the students can use it as a tool of study. They can search the study materials on line by using the cellphone, it will cut down much cost of the time, make the study more efficiently.支持者认为，手机在当今时代已经广泛运用，学生可以用来与家长和监护人随时保持联系，对于安全问题来说，手机是非常必要的。另外，学生也可以将手机作为一个学习工具。他们可以用手机上网搜索学习资料，这将会大大减少时间成本，让学习变得更加有效率。And other people think that the juveniles is not matured enough to use the cellphone in the right way. There were some reports said that some students used the cellphone to cheat in the exam. And also, many parents found that their children would attain some inappropriate information from the net service on the cellphone, it is not easy to supervise that. What the worst result is, they become a cellphone addict, stick to the cellphone anywhere anytime.而另外一些人则认为，青少年们还不够成熟，不能正确的使用手机。有些报道称有些学生用手机在考试时作弊。此外，很多家长们发现他们的小孩通过手机的网络服务会获取一些少儿不宜的信息，这并不好进行监督。而最坏的结果是，他们会变成一个手机上瘾者，不管什么时候、到哪都要粘着手机。There are the advantages and disadvantages of the cellphone, I think the most important of all is how to use it as the best tool of our life instead of letting it control your life.手机有利有弊，我想最重要的是怎样将它变成生活里最好的工具，而不是让它控制你的生活。