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A:
B: Yes, Do you have any skirts?
A: Yes, we do.
B: Blue, please.
A: What size would you like?
B: M.
A: It’s 298 yuan.
B:
A: How about this one? It’s only 90 yuan.
B: OK, Thank you!
| A．What color do you want? |
| B．How much is it? |
| C．Can I help you? |
| D．I like it a lot, but it’s too expensive. |
| E．It’s cheap for you. |
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
