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[[QOrDeR]]你找不到你的钢笔了，你可以说：____( )
| A．I can’t find my book. |
| B．I can’t find my pen. |
| C．Is this my book? |
| A．Where’s my pen? |
| B．It’s on the desk. |
| C．What’s this? |
| A．Sorry, I can’t. |
| B．Sorry, I don’t know. |
| C．Excuse me. |
| A．Thank you. |
| B．It’s on the desk. |
| C．I’m sorry. |
| A．Shall we have lunch? |
| B．Let’s have lunch. |
| C．Time to have lunch. |
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
