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[[QOrDeR]]Where are you from?
| A．I’m from China. |
| B．I’m a Chinese teacher. |
| C．I’m not a Chinese. |
| A．I’m nine. |
| B．I’m fine. |
| C．I’m a pupil. |
| A．It’s in the book. |
| B．They’re in the book. |
| C．They are Japanese stamps. |
| A．Yes, there are. |
| B．No, there isn’t. |
| C．There are five. |
| A．I’m sorry. |
| B．No, thanks. |
| C．No, you can’t. |
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
