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Salesman: 1．
Mom: Yes. I would like a pair of shorts for my son.
Salesman: 2．
Mom: They look too small for him.
Salesman: Would you like the yellow ones?
They are big.
Mom: 3．
Salesman: They are 80 yuan.
Mom: 4．
Salesman: Here you are.
Mom: 5．
| A．Thank you. |
| B．How much are they? |
| C．OK. I’l take them. |
| D．How about these blue ones? |
| E．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
