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B: Yes, please. I need a new pair of shoes.
A: This way, please. Here they are. What size are your shoes?
B:
C: My shoes are size 38.
B: Look! How about these black ones?
C: They are nice. Try them on.
B: I like them.
A: They are 138 yuan.
B:
| A．How much are they? |
| B．OK. I’ll take them. |
| C．May I help you? |
| D．Size 36. |
| E．Bigger than yours. |
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
