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Sarah and her mother go to a shop in the morning. Sarah wants some clothes. They are talking with a waiter. (服务员)
Waiter: Good morning.
Sarah and her mother: Good morning.
Waiter:
Sarah: Yes. The red skirt is pretty.
Waiter: It’s 168 yuan.
Mother: Sorry, it’s too expensive. Look.
Sarah: OK.
Waiter: Sure. Here you are.
Mother: Very good! How pretty!
Sarah: Great.
| A．I’ll take it. |
| B．How much is it? |
| C．Can I help you? |
| D．Can I try it on, please? |
| E．That green one is cheap and nice. |
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
