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W: Do you have a train ticket?
M:
W: Your ticket, please.
M: OK! Oh, I can’t find my ticket.
W: Don’t worry(着急).
M: Oh! It’s my ticket.
Dialogue 2
W: It’s hot today. I want an ice cream!
M: Let me buy some ice cream.
A: Two yuan for an ice cream.
M: I want two, please.
A:
M: Thank you.
| A．What’s that in your sock? |
| B．Here you are. |
| C．How much is it? |
| D．Yes, I do. |
| E．Where is it? |
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
