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Shop assistant: Welcome. Can I help you?
Mike: I’d like an ice-cream.
Helen: I’d like an egg. Would you like an egg, how about you, Liu Tao?
Liu Tao: Well, I don’t know.
Helen: What about a pie?
Liu Tao: Good idea.
Shop assistant: What about you, girl?
Yang Ling: I’d like a cake, too.
A.
B.
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Name | Food |
Mike | ___________ |
Helen | ___________ |
Liu Tao | ___________ |
Yang Ling | ___________ |
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
