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Mum: Yanyan, where are you?
Gao Yan:
Mum: It’s time to pack the clothes. Can you help me, please?
Gao Yan:
Mum:
Gao Yan: And whose shorts are these?
Mum:
Gao Yan: Is this yours, Mum?
Mum:
| A．Yes, it is. |
| B．It’s your father’s. |
| C．OK, Mum. |
| D．They’re your brother’s. |
| E．I’m in the living room, 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
