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A driver: Hello, sir. I want to go to the Moon Hotel. Do you know it?
An old man: Yes, let me get on, I’ll show you the way.
(They drive about ten miles, and come to a small house.)
An old man: Stop here!
A driver: But this isn’t a hotel.
An old man: No, this is my house. And now I’ll show you the way to the Moon Hotel. Go back nine miles. Then you can see the Moon Hotel on the left.
1．Where does the driver want to go?
2．Where does the old man take him?
3．Why doesn’t the old man stop the driver when they pass the hotel?
4．How many miles does the driver go to the Moon Hotel altogether?
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
