A:Hello,John!What were you doing at Chemistry class earlier?You didn't look at the teacher the whole time!B:I have something cool.Look,this is my new 3G mobile phone.I just cannot stop playing with it!A:What is 3 G mobile phone?B:It is so popular now,I cannot believe you haven't heard of it.With 3 G mobile phones,you can send text message,make video calls and watch mobile TV.A:Wow,cool!Show me how to watch mobile TV.It's NBA time!B:Sure.You just need to press one button and choose the channel you want to watch.It is quite easy.A:No wonder it is so popular with college students.I should save money now.Then I can have a cute and powerful 3G phone by summer.I can watch NBA whenever I go too!B:To tell you the truth,I was watching NBA at Chemistry class,it's like owning a portable TV!A:Yeah,I almost forgot.Although it is a lot of fun,you cannot be distracted in class.And students using 3 G mobile phones may make a lot of noise in the library and disturb others.B:You are right.I should not have done that.Can you help me about Chemistry today?A:As long as you don't play it in class anymore!
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