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John: This is my brother, Tom.
Sarah, Mike&Zoom: Happy birthday!
Tom: Thank you.
Wu Yifan: How old are you, Tom?
Tom: I'm 8 years old. What would you like?
John: I'd like some cake and juice.
Zoom: Me too!
Sarah: I'd like some juice and bread.
Mike: I'd like some fish and rice.
Wu Yifan: Can I have some water and bread?
Tom: Sure. Here you are.
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Zoom | ||||||
Sarah | ||||||
Mike | ||||||
Wu Yifan |
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
