[originaltext]M: You see,a marine biologist is now appearing on the screen.W:

M: You see,a marine biologist is now appearing on the screen.
W: Yeah.We are now being taken on a tour familiarizing with life in the salty depths.It’s an interesting tele teaching lesson.
Q: What are the man and woman doing?

W: Could you tell me the least expensive way to get to London?
M: If you go by bus it’ s only ￡ 20. But if you go by train, it’s almost twice that much.
Q: What does this man explain to the woman?