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B: Good morning.
A:
B: I want a teddy bear, please.
A:
B: Yes. How much is it?
A:
B: Err..., it’s a little expensive (贵的).
A: What about (……怎么样) this gray (灰色的) one? It’s fifteen yuan.
B: OK.
A: Here you are.
| A．It’s twenty yuan. |
| B．Can I help you? |
| C．I will take it. |
| D．Good morning. |
| E．Do you like the yellow one? |
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
