说一说你周围的人用手机干什么英语作文50个单词 篇一 There are some drawbacks,too.Firstly,the most important disadvantage is the unknown effects on health in case of over-use.Scientists found that mobile phones can cause brain cancer.if you talk for so many hours,you are going to have headache and ear problems.Secondly,the mobile phone stimulate home for the high cost of communication. 篇二 Mobile phones are the main invention of modern technology.They are completely part of our daily lives If we look at our society,we can see that all kinds of people are using mobile phones.Maybe they have many advantages,but they also experience drawbacks. 本文来源：https://www.wddqw.com/doc/e98758fc88d63186bceb19e8b8f67c1cfad6ee2d.html