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There are some rules in our school. We must wear school uniforms in the school every day. We must wear sneakers in PE classes. Boys can' t have long hair. We shouldn't be late for school.
We shouldn't talk in the school library. If we have any questions in class, we should put up our hands first. We should stand up when we answer teachers' questions. We mustn't fight against others. We should always obey the rules(遵守规则).
1．We should always obey the school rules. （2．We must wear school uniforms at home. （
3．Boys can have long hair. （
4．We should be late for school. （
5．We mustn't fight against others. （
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
