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Waiter: Can I help you?
Miss Green: Yes. I’d like an umbrella.
Waiter: What about this green one?
Miss Green: No, thank you. I’d like that orange one.
Waiter: Anything else?
Miss Green: A fan, please.
Waiter: Here you are.
Miss Green: Thank you. How much are they?
Waiter: Twenty-five yuan.
1．Miss Green is at a snack bar.
2．Miss Green would like the orange umbrella.
3．Miss Green only would like an umbrella.
4．The fan is twenty-five yuan.
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
