https://online2.tingclass.net/lesson/shi0529/10000/10090/sports05.mp3
https://image.tingclass.net/statics/js/2012
A: I'm surprised to see you out running.
B: I want to join the track team next semester.
A: Is that why you're training so hard?
B: Yes. I want to be in shape for tryouts.
A: You don't just run to get in shape.
B: What should I do then?
A: You should do some weight training, too.
B: What good is weight training?
A: It will give you strong legs so you can run well.
B: If my legs get too muscular, I'll look like a frog!
A: Frogs are pretty fast.
B: That's true. Maybe as a frog, I'd win all the races.