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Qiqi: Hello. This is Qiqi speaking.
Feifei: I can't go to your birthday party.
Qiqi: What a pity!
Feifei: I have a cold.
Qiqi：
Feifei: No.
Qiqi: Oh dear! Please stay at home and have a rest.
| A．What's the matter? |
| B．Take care. |
| C．May I speak to Qiqi? |
| D．I'm sorry to hear that. |
| E．He has a cold too. |
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
