() 13. — do you go to Weifang Theatre? 一 Once a month.

   A. How soon   B. How often   C. How much   D. How long

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 (2015 •福州) Have you noticed your life becoming a little easier? Now,when you go to a certain shopping mall,you can enjoy its free Wi-Fi there. When you want to take a taxi,you can book one with your phone. In fact,all these can be seen as the basic parts of a smart city.

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