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Lingling:
Mum: Great!
Lingling: Look, here is a photo of them. They came for the music competition.
Mum:
Lingling: They came last Monday.
Mum: Did this girl win the gold cup?
Lingling:
Mum:
Lingling: Thank you, Mum. I’ll practise more.
| A．No, she didn’t. |
| B．What did they do? |
| C．When did they come? |
| D．Yes, she did. |
| E．I’m reading a newspaper. |
| F．You can play the piano well, too, Lingling. |
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
