英语老师进我后天要上台演讲,题目为《中学生该不该使用手机》,注意,是演讲稿,词量大约75左右,不要太多也不要太少,这篇议

As every body knows, mobiles are playing a important part in our daily life nowadays.But they have bot advantages and disadvtanges in my opinion.
on the one hand,mobiles make it convinent for people to keep in touch with each other whevere they are.Especially when they have something important.
on the other hand,they also have many disadvatages. Sometimes the rings may affect others in class,and have a bad effect on our studying.
so i think we students shouldn't use the mobiphone.