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Amy: Mum, my dress is old.
Mum: Yes, dear.
Sales assistant:
Amy: I want to buy a dress. I like the long dress.
Sales assistant: Which one do you want, the yellow one or the red one?
Amy:
Sales assistant: Sure.
Amy: Mum, I want this red dress.
Mum: OK.
Sales assistant: Sixty yuan.
Mum:
Sales assistant: Thank you
| A．How much is it? |
| B．Can I help you? |
| C．Can I have a new one? |
| D．You’re welcome. |
| E．Here you are. |
| F．The red one, please. |
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
