Mr. White lives in a tall building. He lives on the sixteenth floor. Every day, he takes a lift up and down. One Saturday afternoon, he went shopping with his little son and bought many
things. They drove back and carried all the things up to the lift. Suddenly they saw a piece of
paper . It said,“Dear sirs, there’s something wrong with the lift. Please use the stairs now.”
The son took a bag and ran upstairs quickly. But Mr. White walked and walked. At last they stood in front of their door feeling very tired. Mr. White began to look for the keys, but he could not find them. Suddenly he shouted in a loud voice, “Oh, no! I’ve left my keys in the car.”
( )1. Mr. White lives in a tall building.
( )2. They went shopping on Sunday afternoon.
( )3. Mr. White got home by the lift.
( )4. Mr. White’s keys were in the car.
( )5. Mr. White was a careful man.
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