搜索
B:
A: Look!
B: How many books do you have?
A: Nineteen. And I have twenty stickers.
B: Great!
A: No, I don't.
B: Wow!
A: They can do many things. Let me show you!
B: Haha! They are cool.
| A．Do you have any dolls? |
| B．What can they do? |
| C．I have some books on the desk. |
| D．How nice! |
| E．Thirteen animal stickers and seven flower ones. |
| F．But I have two robots. |
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
