班级：L3-A      姓名：Chloe      学号：20193000305

日期：2020/5/17        作业序号(Writing Assignment)：007

    Cell phones are becoming more and more common among teenagers. Nowadays, almost every teenager has his own cell phone. Some people think that cell phones can improve young people life quality, while some people think that cell phones will harm for young people, and I think that young people will get more disadvantages by using mobile phones.

On the one hand, Cell phones can bring a lot of convenience to teenagers. They can use cell phones for online shopping, so they can buy everything they want and don't need to find it everywhere. Teenagers can also use cell phones to study. There are a lot of learning software on the cell phone, which can let teenagers learn in any place. Especially for those teenagers in rural, it can make up for their backward learning resources.

On the other hand, Cell phones can hurt to teenagers. No matter what they do with cell phones, using it for long time will hurt their eyes and their vision will declining gradually. Secondly, mobile phone is full of all kinds of games, and teenagers are very easy to addict to games. In addition, many teenagers have low self-control.Once they are addicted to games, they will become unable to concentrate on their studies and their academic achievement will decline.

Using cell phones for a long time will bring some inevitable harm to teenagers, so teenagers should try to use it less. They can use cell phones on weekends, but they should not use it when they are in school.