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Mary:
Mrs Smith: About where we are going on our vacation.
Mr Smith: Your mother and I have decided to go somewhere in China.
Rose: I want to go somewhere warm.
Mary: I like to go to the sea, then we can swim.
Mr Smith: I think that’s a great idea.
Mrs Smith:
Rose: Why do you want to go there, mom?
Mrs Smith: You know that it’s warm on Hainan Island. I heard it’s a beautiful place.
Mary:
Mr Smith: About two weeks.
Rose: Do you know where we can stay there?
Mrs Smith:
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
