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B: Yes, I’d like some juice.
A: Sorry, we don’t have any juice.
B: Do you have any milk?
A: Yes.
B: Three bags, please.
A:
B: I want some hot dogs, too.
A:
B: Three.
A: Twenty-five yuan in all.
B: Here is the money.
A: Thank you.
| A．How much are they? |
| B．How many would you like? |
| C．How many bags of milk do you want? |
| D．Can I help you? |
| E．What else? |
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
