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A: You look pale. 1．
B: I don’t feel well. I’ve got toothache. 2．
A: How long have you felt like this?
B: 3．
A: OK. Open your mouth and let me have a check. ... 4．Take this medicine after meals three times a day. You’ll be all right in a few days.
B: 5．
| A．Thanks. |
| B．For about two days. |
| C．You must be tired. |
| D．Well, it’s nothing serious. |
| E．That’s right. |
| F．What’s the matter? |
| G．It hurts. |
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
