单项选择题

Questions 19 to 21 are based on the conversation you have just heard.

A．They don’t get rid of flabby arms.
B．They can damage arm muscles.
C．They aren’t acceptable to most people.
D．They can raise one’s blood pressure.

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1. 目前大学生逃课现象很普遍2. 分析大学生逃课的原因3. 你对这一现象的看法Class Skipping in Colleges

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