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A. What is it?
B. Can I read the book?
C. And I learn a lot about animals.
D. Fish don't close their eyes when they sleep.
E. Is it interesting?
Lucy: Zara, I have got a fantastic present.
Zara:
Lucy: It's a book about animals.
Zara:
Lucy: Yes, it is.
Zara: Really?
Lucy: Yes. It says we can know the age of a horse from its teeth.
Zara: That sounds interesting.
Lucy: Yes, of course. Let's read it together.
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
