Questions 11 to 13 are based on the following passage.At the end of the passage, you will be given 15 seconds to answer the questions.
Why is mobile phone mentioned in the passageA．It is the main cause of car accidents. B．It is the necessity ofAmerican people. C．It is the number one favorite ofAmerican teens. D．It is the number one cause of distracted-driving accidents.
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