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W : Good 'morning. 1
M: Yes. I'd like a pair of pants for my son.
W: Here are the pants. What colour does your son like?
M: He likes blue. 2
W: Look at this pair. Do you like it?
M: 3 Do you have any big pants?
W: Yes. How about this pair?
M :It's nice. 4
W: 80 yuan.
M : Too expensive. What about 70 yuan?
W:Well. 5 . Here you are.
M : Thanks.
| A．How much is it? |
| B．You may take it for 70 yuan. |
| C．It is too small. |
| D．Can I help you? |
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
