情景对话
A: Hello.Nancy! I haven’t seen you for a long time.                    ?
B: I have been to Shanghai.
A: Really? Did you see the Jin Mao building?
B:                        .It’s really a modern wonder of the world.
A:                        ?
B: About 420.5 metres high.
A:                        ?
B: I have no idea.Maybe 88 floors.
A:                        ?
B: Yes, it is.But it’s the fourth tallest building in the world.
A: Oh. How exciting! I really hope to go there to see it myself.