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Waiter: Good morning.
Lingling: Good morning. I want some dumplings.
Waiter: Sorry.
Lingling: I want a hamburger, please. What do you want, Daming?
Daming:
Waiter: What do you want to drink?
Daming:
Lingling: Milk, please!
Waiter: OK.
Lingling:
Waiter: It's ten dollars and ten cents.
Lingling: Here you are.
Waiter: Thank you?
| A．I want a hot dog, please |
| B．Orange juice, please! |
| C．Can I help you? |
| D．How much is it? |
| E．We don't have any dumplings. |
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
