根据对话内容填空，补全对话。
A: Good morning! Can I help you?
B: Yes, please. I'd like a pair of leather shoes.
A: What color do you want? We have two colors.
B: I think I 1_____ white to black.
A: What size do you wear?
B: Size 37. May I try them 2_____?
A: Certainly.
B: Oh, I'm afraid they are a little 3_____ for me.
A: Here's another pair in size 38. What do you 4_____ of them?
B: Oh, good. They are big 5_____. I think I'll take them.
2C(g) ΔH<0。达到平衡后，改变一个条件，下列量(Y)的变化不符合图中曲线的是( )
