搜索
B: It's a library card.
A:
B: Yes. I want to borrow a book about China.
A:
B: Yes. We don't talk in it.
A: Oh,
B: It means “Don't turn right”. Oh, this way please. Look at the sign.
A: What's the meaning?
B:
A: OK.
| A．Don't walk on the grass. |
| B．Are there any rules in your library? |
| C．what does the sign mean? |
| D．And we can't run in it. |
| E．Are you going to the library? |
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
