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（_____） 1. A. It’s a nice study. B. Yes, she is. C. Yes, it is.
（_____） 2. A. Yes, they are. B. No, it isn’t. C. Yes, they aren’t.
（_____） 3. A. They are blue. B. Yes, they are. C. They are under the bed.
（_____） 4. A. It’s black. B. A sofa and a TV. C. It’s on the table.
（_____） 5. A. It’s orange. B. They are white. C. It’s in the kitchen.
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
