(_____) 1. A. Yes, I do. B. Yes, I am. C. Yes, I have.
(_____) 2. A. It’s a computer. B. Bread and milk. C. It’s 9:30.
(_____) 3.A. She is in the art room. B. She is a student. C. She is fine.
(_____) 4. A. It’s twelve. B. I’m twelve. C. They are twelve.
(_____) 5. A. It’s nine o’clock. B. It’s time for class. C. No, it isn’t.
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