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Peter is a school boy. He is only six years old. One day, his teacher asks, “Peter, what is five minus five?” “Sorry, sir, I don’t know.”
“Listen, Peter, there are five apples in your bag, but there is a hole (洞) in your bag, too. All the apples fall out, now what is left (剩) in your bag?” the teacher asks. “The hole.” Answers Peter.
1．Peter is _______ years old. ( )| A．five | B．six |
| A．Peter eats them | B．the bag has a hole |
| A．Yes, he does. | B．No, he doesn’t. |
| A．No, there isn’t. | B．Yes, there is. |
| A．Yes, he is. | B．No, he isn’t. |
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
