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A boy goes to the cinema. He buys a ticket(票) and goes in. But after two or three minutes(分钟), he comes out. He buys a second ticket and goes in again. After a few minutes, he comes out again and buys a third ticket. Two or three minutes after that, he comes out the third time and asks for another ticket. The ticket seller is puzzled(困惑的) and asks him, “Why did you buy all these? Did you meet friends in the cinema?” The boy says, “No, But a big man always stopped me at the door and tore(撕碎) my tickets up. ”
1．After a long time, the boy comes out again and buys a third ticket.2．The boy comes out three times to buy tickets.
3．The boy goes to the cinema to meet friends.
4．The big man tore the boy’s tickets because he doesn’t like the boy.
5．It’s the first time for the boy to go to the cinema.
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
