【答案解析】As we all know, mobile phones are becoming more and more popular in China with the development of science and technology. Mobile phones are very convenient and people can get in touch with each other at any time and at any place. Besides, there are many different functions, such as sending short messages, playing games and even surfing the Internet.
However, there are some disadvantages. For example, the radiation is harmful to people"s health. In addition, the telephone bill is relatively high because they have to pay whether they receive calls or make calls.
Therefore, people should make good use of mobile phones and try to reduce the disadvantages.