补全对话 （5分）

A: Good morning, madam.(1)_________________________?

B: Yes, please. I’d like a dress.

A: _______(2 )____________________?

B: Size M.

A: OK! ________(3 )_______________?

B: It looks nice. But it’s a little short.

A: Well! Look at that green one. It’s a bit longer. It’s nice , too.

B: Yes. It looks as nice as the blue one. Can I try it on?

A: Of course.

B: Oh, good! It’s just right. ________(4)_________________?

A: Eighty yuan.

B:I will take it. Here’s the money.

A: Here you are, Goodbye!

B:  ________(5 )_________!

底开车制动缸活塞行程（）时，制动缸空间变小，空气压力增大，使制动力变大，轴瓦与车轮间隙过大，从而增加轴瓦与轮的磨损。

A.速度快

B.速度慢

C.过长

D.过短