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Daming: I visited the famous West Lake.
Jack: Oh, it was great！
Daming: Yes, I did.
Jack: Did you take lots of pictures?
Daming:
Jack: What about your brother Xiaoyong?
Daming: No, he wasn't. He was at home.
Jack:
Daming: Yes, he did. He is a good boy.
| A．Yes, I did. |
| B．Was he on holiday too? |
| C．What did you do last week? |
| D．Did he help do the housework? |
| E．Did you go 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
