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（1）A. No, we don’t.
B. No, they aren’t.
C. No, it isn’t.
（2）A. Yes, I can.
B. No, we can’t.
C. Yes, they can.
（3）A. At six thirty.
B. By bus.
C. Yes, I do.
（4）A. Yes, I do.
B. No, we don’t.
C. I like living in a big city.
（5）A. We can take the bus.
B. We can put the rubbish in the bin.
C. We can throw the bottles in the river
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
