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Questions 11 ～ 14 are based on the following passage. What are experts trying to persuade people to do

A．To buy cigarettes with less tar.
B．To smoke only a few cigarettes a day.
C．To give up smoking entirely.
D．To smoke only during a break.

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单项选择题

单项选择题

Questions 11 ～ 14 are based on the following passage. What are experts trying to persuade people to do 您的浏览器不支持 audio 元素。