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B:Yes. I’ve just come back from the zoo. A: Have you seen your favorite tigers?
B:Yes.
A:Why not?
B:Because they had to stay in cages(笼子) and they were dirty.
A:
B:Even worse, a few children threw something at them.
A:That’s too bad.
B: Of course. I also told them it was our duty to protect animals.
A:
| A．I’m sorry to hear that. |
| B．Did you stop them? |
| C．But they didn’t look well. |
| D．When did you go to the zoo? |
| E．Didn’t you go to the zoo? |
| F．How do you like tigers? |
| G．You did quite right. |
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
