短文改错(共10小题；每小题1分，满分10分)
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（^），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
It can be seen, more and more people own mobile phones in China now. At the end of 2002, there were 20 millions mobile phone users. By 2005 a number reached up to 30 million. People have found mobile phones convenience. They can get in touch to each other whenever and wherever they like. There’re different functions to meeting different needs, such as surf the Internet. However, it may bring us some trouble. For an example, the radiation from the phone may do harm our health. In spite of this, the number of people having mobile phones are increasing steadily.