题目内容：

As we know，the Internet is playing an important part in  our life．1. In face-to-face communication（交际），we follow  some rules to be polite to others 2.

If someone on the Internet is not kind to you，you may want to fire back（反击） in the same way．But try not to do so．3..4.If it is a small mistake，you may not need to say anything．If you find you are wrong，be sure to correct yourself and say sorry．

5. If you don't know the person very well，both of you won't be comfortable with the information．

 

A．You shouldn't care them or just cut off their messages．

B．We share all kinds of information with others．

C．Don't ask others personal questions，such as their ages and families.

D．You may find something wrong while talking with each other．

E.So we should know some rules when we are on the Internet.

A．You shouldn't care them or just cut off their messages．

B．We share all kinds of information with others．

C．Don't ask others personal questions，such as their ages and families.

D．You may find something wrong while talking with each other．

E.So we should know some rules when we are on the Internet.