听对话或独白，根据对话或独白的内容，从下面各题所给的A、B、C三个选项中选择最佳选项。每段对话或独白你将听两遍。
What’s wrong with the man?
A. He has a headache.
B. He has a fever.
C. He has a stomachache.
What does the doctor tell the man to do?
A. To do some exercise.
B. To take some medicine.
C. To have some vegetables.