29．The underlined phrase"went viral"in Paragraph 2probably means　B�。�

A．were exposed                    

B．became widely﹣spread

C．were criticized                   

D．became viruses

30．Why did Yan become famous？　A　

A．Because his dog became famous．

B．Because he posted two pictures on the Internet．

C．Because he took a strange picture．

D．Because he became an Internet celebrity．

31．How did Yan probably feel at first when he realized he became well﹣known？　D　

A．puzzled and annoyed              

B．surprised and tired

C．disappointed and annoyed          

D．excited and joyful

32．What can we infer from what Yan said in the last two paragraphs？　B　

A．It is hard to raise a pet dog．

B．He isn't fully understood on the Internet．

C．He decided to stop making use of his microblog．

D．Internet celebrities can't satisfy their followers．