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Dalong: Very well, thanks. And how are you?
Daming: Fine, thanks.
Dalong: I was in Guilin with my mother.
Daming:
Dalong: No, it wasn't. It was cloudy.
Daming: What did you do there?
Dalong: I visited my uncle.
Daming: I was at home.
| A．Was it sunny in Guilin? |
| B．What about you? |
| C．How are you, Dalong? |
| D．Where were you on holiday? |
| E．We went to the zoo. |
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
