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Lingling: Let’s go to have some Chinese fast food.
Daming: OK.
Lingling: Look at that man. What’s he doing?
Daming: 1．
Lingling: I want some noodles. Do you want some noodles?
Daming: 2． I want some dumplings.
Lingling: OK.
Man: 3．
Lingling: I want some noodles. 4．
Man: Five yuan.
Lingling: I want some, please.
Man: OK. 5．
Lingling: Thank you.
| A．No, thank you. |
| B．Can I help you? |
| C．Here you are. |
| D．How much is it? |
| E．He is making noodles. |
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
