Lily:
Xiaoxue: Who did you go to Hainan with?
Lily:
Xiaoxue: How did you go to Hainan?
Lily:
Xiaoxue: What did you do there?
Lily:
Xiaoxue: Did you have a good time?
Lily:
Xiaoxue: Great!
A.I went there with my parents. |
B.We swam in the sea. |
C.Yes, I did. |
D.I went to Hainan. |
E.We went there by plane. |
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