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Mom: It's sunny and warm today.
Amy: Wow, great! Let's go shopping.
Mom: OK. What time is it?
Amy:
Mom: OK.
Saleswoman:
Amy: Yes, this dress is very pretty.
Saleswoman: Of course. Here you are.
Mom: Is it OK, Amy?
Amy: Yes, it's just right.
Mom: Great!
Saleswoman: It's 80 yuan.
Mom: OK, we will take it.
| A．How much is it? |
| B．It's 9 o'clock. |
| C．What's the weather like today? |
| D．Can I help you? |
| E．Can I try it on? |
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
