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.
第3题
柴油机压缩冲程中,汽缸中空气的温度、压强、体积的变化情况是()
|
第4题
液体在压强增大时,体积被压缩而减小,密度增大,这一性质称为流体的()
A.热胀性
B.重力特性
C.黏滞性
D.压缩性
第5题
A.温度不变时,系统的平均平动动能不变;
B.温度不变时,体积减小,系统粒子数密度增大;
C.这两种变化中压强都增大,从微观来看压强增大的原因一样;
D.体积不变时,温度升高,系统的平均平动动能变大。
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