单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A．By going on a diet.
B．By doing physical exercise.
C．By having fewer meals.
D．By eating fruit and vegetables.

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单项选择题

单项选择题

Questions 11 to 18 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。