QQ is one of the most popular chat tools among teenagers .We regard it as an important chat tool in our daily life because it has some advantages . First, we can make lots of e-friends on QQ.It is easy to find the person who has the same interest as us ,and we can talk with him or her happily .Second ,we can also join a QQ group to find the information we need .For example ,if we want to learn English well ,we can choose a group with many English lovers in it .Third ,we can also play games with our friends on QQ and always have fun . QQ brings us a lot of benefits  ,but it can also cause some problems .It's dangerous to tell strangers on QQ our real personal information like telephone numbers , addresses and ID numbers .If we spend too much time chatting online ,it won't be good for our study and health . QQ is a kind of  _  .
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