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This is our school library. It opens at 8:30 in the morning and closes at 5:30 in the afternoon.
There are many books in the library. We often come here to borrow or return books after class. When we borrow books, we must obey(遵守) the library rules. We can borrow only one book at a time and keep it for two weeks.
There is a reading room in the library. We can read magazines and newspapers there. But we can’t take any of them out.
1．When does their school library open? ( )| A．At eight o’clock. | B．At five o’clock. | C．At half past eight. |
| A．At four o’clock. | B．At six o’clock. | C．At half past five o’clock. |
| A．must obey the library rules | B．mustn’t obey the library rules | C．needn’t obey the library rules |
| A．two weeks | B．three weeks | C．one week |
| A．No, there isn’t. | B．I don’t know. | C．Yes, there is. |
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
