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（1）A. I wenr to bed at 8:50.
B. She goes to bed at 8:50.
C.She went to bed at 9:10.
（2）A. He wants a computer.
B. He buys a computer.
C. He likes the computer.
（3）A. No, thank you.
B. Thank you.
C. You're welcome.
（4）A. Yes, they are the same.
B. No, they are different.
C. They are the same.
（5）A. It's mine.
B. They’re different.
C. Yes,they're.
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
