It is stated in the passage that Russia and China _______ .（　　）

A．ordinary telephone service is available everywhere

B．people prefer mobile phone to ordinary telephones

C．mobile are used in places without ordinary telephone

D．people use mobiles to send e-mail and access the Internet

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1 Parents buy mobile phone for their children because ________ .（　　）

A．mobile phone are very fashionable with teenagers

B．they can call home if they are in trouble and need help

C．they can use mobile to play simple computer games

D．mobile phone enable teenagers to give up smoking

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2 Why can mobile phone be a much more serious problem?（　　）

A．Because people hate the businessmen using mobile in public place

B．Because of use of mobile phones can be physically harmfu

C．Because there is strong evidence for the problems of mobile

D．Because people feel their privacy unprotected in a café or restauran

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3 Which of the following can be the title of this passage?（　　）

A．Why Are Mobile So Popular?

B．Mobiles—Useful or Useless

C．Mobile—A Danger to health?

D．Why Do We Design Mobile?

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