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I am a student living in England. I know the traffic lights are the same in every country. Red means stop and wait. Yellow means slow down and stop. Green means go. But some traffic rules are different in different countries. In our country, people drive on the left side. Before you cross a street, you must look right first and then look left. When you go by bus in England, you have to be careful, too. Always remember the traffic moves on the left. We should remember the traffic rules.
1．Traffic rules are the same in every country.2．Some traffic lights are different in different countries.
3．In England, the traffic moves on the right.
4．In England, before you cross a street. you must look right first.
5．We shouldn't remember the traffic rules.
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
