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Jim’s Family Rules (家规)
Jim is a good student at school. All of his teachers like him very much. But he is not a good boy at home. He doesn’t clean his room. He puts his books here and there. He likes eating junk food (垃圾食品). He always watches TV till very late. He goes to bed very late and reads books in bed. So his mother makes some family rules for him.
Family Rules
·Don’t read books in bed.
·Don’t watch TV too late.
·Don’t put books here and there.
·Don’t eat junk food.
·Go to bed before 9:00 p. m.
1．Jim is a good student at school.2．Jim cleans his room at home every day.
3．Jim never watches TV late at night.
4．Jim’s mother makes some rules for him.
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
