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（_____） 1. A. She can skate. B. He can skate. C. He likes skating.
（_____） 2. A. Yes, there is. B. No, they aren’t. C. No, there isn’t.
（_____） 3. A. Yes, I do. B. No, she doesn’t. C. Yes, she does.
（_____） 4. A. Yes, there are. B. No, there aren’t. C. There are three.
（_____） 5. A. It’s on the table. B. No, it isn’t. C. They’re on the table.
（_____） 6. A. I like watching films. B. He likes drawing. C. He likes animal friends.
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
