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A woman took her daughter to a hospital. She wanted the doctor to pull out (拔出) a tooth for her daughter. After finishing it, the doctor asked the woman to pay (付款) him forty yuan. “What? Forty yuan? Why? I should pay you only eight yuan for one tooth!” The woman wasn’t happy.“That was right.” said the doctor. “But when I pull out the tooth for your daughter, the girl cried so loudly that my other four patients (病人) ran away. So you should pay me thirty-two yuan for it. ”
1．The girl has a bad tooth.2．The doctor pulled out four teeth for the girl.
3．The patient should pay eight yuan for one tooth.
4．The girl laughed so loudly that other four patients came in.
5．The doctor asked the girl’s mother to pay forty yuan.
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
