听一段对话,回答第1~3小题。
A. Classrooms. B. Art rooms. C. A library.
A. 12. B. 21. C. 24.
A. Yes, there are. B. No, there aren’t. C. Yes, there is.
听一段对话,回答第4~6小题。
A. The classroom. B. The art room. C. The library.
A. 18. B. 40. C. 48.
A. Yes, there are. B. No, there isn’t. C. Yes, there is.
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