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1．开学的第一天你负责接待新同学，你见到新同学应该说：_________ ( )
| A．Hello! |
| B．How are you? |
| C．Welcome to our school. |
| A．This is our school. |
| B．This is our library. |
| C．This is our meeting room. |
| A．Don’t be late! |
| B．I’m sorry. |
| C．Good morning! |
| A．I am singing. |
| B．I can dance. |
| C．I will borrow some books from 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
