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（1）---Can we go and play with the animals?
---___________________.
（ ）Yes, I can.
（ ）Yes, you can.
（2）---Is that the post office?
---_________.The post office is next to the bank.
（ ）No, it isn't.
（ ）No, I can't.
（3）---_____________?
---It's 83 yuan.
（ ）Can I help you?
（ ）How much is it?
（4）---_____________?
---They're ducks.
（ ）What is this?
（ ）What are these?
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
