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B:
(At Peter’s snack bar)
C: Good afternoon.
A: Yes. I’m hungry.
C: OK. What about your friend?
B: I’m not hungry now.
C: All right. Here you are.
A & B: Thank you.
C: Twenty-five yuan, please.
A & B: Here’s the money.
C: Thanks! Have a nice day!
| A．I’d like an ice cream. |
| B．I’d like a big hamburger. |
| C．OK. Let’s go to Peter’s snack bar. |
| D．How much are they? |
| E．Can I help 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
