听力原文：M: I have been tired of working and need a change. So I'm just making plans to go

away during Spring Festival.

W: Really？ Where are you going？

M: I'm planning to visit Tibet.

W: My brother and I had a vacation there last year and we had a great time.

M: Did you get into Lasa？

W: Sure. That's the first stop. No one would miss Lasa.

M: Is the Potala Palace magnificent？

W: You bet. And don't forget the Barkhor Street. That place is full of treasures, I mean, all the exotic paintings and handicrafts, and the hand-made jewelries.

M: Well, as them is so much there waiting for mc, I guess I should stay longer.

W: Definitely.

M: I heard that the weather there is great.

W: Well, that depends on how you define "great". No humidity, but it could be extremely cold in winter. Besides, you do need to be careful about high altitude.

M: What should I do about that？

W: Oh, just take it easy for a few days. Don't exercise too vigorously. Just do everything gradually.

M: I'm sure I will be fine. And I will let you know all about my trip when I come back.

(23)

A．To work there.

B．To relax after work.

C．To see his relatives.

D．To join an international conference.