听下面一段对话,回答第1-2小题。
A. A skirt. B. A coat. C. Trousers
A. We don't know. B. No, they are old. C. Yes, they are new.
听下面一段对话,回答第3-5小题。
A. It's Saturday. B. It's Sunday. C. It's Monday.
A. Do her homework. B. Watch TV. C. Both A and B.
A. Watch TV at home. B. Go to the zoo C. Go to the park.
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