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Bill: I lost my bag.
Mike:
Bill: I lost it in the playground(在操场上).
Mike: What colour is it?
Bill:
Mike: What was in it?
Bill:
Mike: Oh, Look! I found a bag in the playground just now(刚才).
Bill: Yes, it is. Thank you very much.
Mike: You are welcome.
| A．It’s black. |
| B．What’s the matter with you? |
| C．My new books and pens. |
| D．Where did you lose it? |
| E．Is this your bag? |
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
