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（1）A. Yes, this is.
B. No, it isn’t.
C. Yes, she is.
（2）A. It’s time to get up.
B. Just a minute.
C. It’s seven o’clock.
（3）A. It’s on the second floor.
B. Here’s the art room.
C. No. It’s the washroom.
（4）A. I like blue.
B. It’s red.
C. They are green.
（5）A. She is Amy.
B. It’s a T-shirt.
C. It’s Amy’s.
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
