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Lily:
Mum: Did you have a nice trip?
Lily:
Mum: What did you do yesterday?
Lily:
Mum: Did you buy any gifts?
Lily:
Mum: Oh, a green sweater!
Lily:
Mum: Thank you, Lily.
| A．I went shopping with my friend. |
| B．Yes, I bought many gifts. |
| C．Yes! A great trip! |
| D．I know green is your favourite colour. |
| E．I missed you too, Mum. |
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
