13.Q: How does the man control his weight?
A. By going on a diet.
B. By having fewer meals.
C. By doing physical exercise.
D. By eating fruit and vegetables.
14.Q: What do we learn from the conversation?
A. All the passengers were killed.
B. The plane crashed in the night.
C. No more survivors have been found.
D. It's too late to search for survivors.
13. W: When I go on a diet, I eat only fruit and that takes off weight quickly.
M: I prefer to eat whatever I want and then run regularly to lose weight.
14. W: Is the rescue crew still looking for survivors of the plane crash?
M: Yes, they have been searching the area for hours, but they haven't found anybody else. They'll keep searching until night falls.
13.解析：C。问题询问男士，听音重点在于男士所说的“run regularly” ，可知男士是通过体育锻炼来减轻体重。答案为C。