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A How much is it?
B You may take it for 70 yuan.
C It is too small.
D Can I help you?
E Blue clothes are his favourite.
W : Good 'morning.
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.
W: Look at this pair. Do you like it?
M: Do you have any big pants?
W: Yes. How about this pair?
M :It's nice.
W: 80 yuan.
M : Too expensive. What about 70 yuan?
W:Well. . Here you are.
M : Thanks.
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
