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It is Sunday afternoon. Liu Tao and his friend David are taking a walk in the park. There are many public signs in the park. They mean different things. Liu Tao knows a lot of things about them. Suddenly, they see a short man walking on the grass. Liu Tao points to the sign on the grass and says to him, “Sir, look at the sign! You can't walk on the grass.” The man smiles and says, “You are right, young man. But I'm the park keeper. I'm looking after the grass. I'm picking up the garbage on it.
1．It is Sunday afternoon.2．The boys can see many public signs in the park.
3．The man is very angry when Liu Tao says to him.
4．The park keeper just wants take a walk on the grass.
5．“Garbage” in Chinese means “ ________” ( )
A．草地  | B．垃圾 | C．标志 |
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
