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Wet Paint
Mr Black was walking in the park and he was very tired.He looked around and saw a chair in the distance.So he walked towards the chair.There was a small board on the chair.But he couldn't see it clearly.So he went to sit on it and looked at the board carefully.It said, “Wet Paint.”
( )（1）Mr Black was in the zoo.
( )（2）There was a chair in the park.
( )（3）Mr Black sat on the chair.
( )（4）Mr Black saw the board clearly at first.
( )（5）The small board said, “Sit Here.”
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
