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Shop girl:
John: Yes. I want to buy a pair of new shoes.
Shop girl: Look at these shoes.
John: They’re very pretty.
Shop girl: Of course. Here you are.
Mother: John, are they OK?
John: No,
Mother: Hmm. OK. Let’s try size 7.
John: They’re just right.
Shop girl: 128 yuan.
John: Ok, I’ll take them.
| A．Can I try them on? |
| B．How do you like them? |
| C．Can I help you? |
| D．How much are they? |
| E．they’re too small. |
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
