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（＼）划掉。
修改：在错的词下画一横线，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。
Wechat (微信) is becoming increasing popular with people. Recently I have made a survey among my classmate about the use of Wechat. According to a result, 45% of the classmates admit they often use it because comparing with other means of communication, Wechat has more advantages. It was cheap, convenient and easy to send all kinds of messages around. Besides, 35% of they are against using it, saying it will affect their study. Not using Wechat, the rest has no opinion about it. As far as I'm concerned, although Wechat offers us great convenience, it should be made good use. We should not be slaves to it or let it to govern our minds and behaviors.
