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Dad: It’s 7 o'clock, John. It’s time to get up!
John: Err… I don’t feel well.
Dad:
John: Ahchoo! I have a headache and I want to sleep.
Dad:
(In hospital)
Doctor: Hi, boy! What’s the matter?
John:
Doctor: Open your mouth and say “Ah…”
Dad: Is it serious (严重的)?
Doctor:
| A．Let’s go to see the doctor. |
| B．I feel ill. |
| C．He will be better soon. |
| D．What’s wrong? |
| E．He has a cold. |
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
