听力原文：M: Is it true that you don't swim at all now? W: I'm afraid so, I'm too old. M: But you are only twenty. W: That's too old for a swimmer. If I swam in an international competition now, I wouldn't win. So I'd rather not swim at all. M: But don't you enjoy swimming? W: I used to, when I was small. But if you enter for big competitions you have to work very hard. I used to get up at 6 to go to the pool. I had to train before school, after school and on weekends. I swam thirty-five miles every week! M: But you were so famous at fifteen. And look at all those cups. W: It's true that I did have some wonderful memories. The Olympics were very exciting. But I missed some important things too. While other girls were playing, I was swimming. What is the woman good at?