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1．在公园里 _______________________ 2. 在草地上_______________________
3．禁止吸烟 ___________________ 4. 不许乱扔垃圾_______________________
5．不许停放车辆 ___________________ 6. 许多_______________________
7．在墙上 ____________________________ 8. 散步_______________________
9．公共标记 ___________________________ 10. 吵闹_______________________
11. at Jinling Zoo _________________________ 12. take a walk_______________________
13.keep off ____________________________ 14. keep quiet_______________________
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
