搜索
Feeling sick is very bad for people. When children are sick, they can’t go to school and have to stay at home. Parents can’t go to work because they have to take their kids to the hospital and stay with them. After children are healthy again, they have more lessons to learn. Children always feel bad. When adults are ill, they can’t go to work. They often see the doctor or stay in bed. And also, it’s easy for people to get angry and sad when they are sick. If you don’t want to feel bad, you should keep fit every day.
Children | Adults(成人) | |
Feeling sick | can’t go to | can’t go to See the |
Feeling | after health, always feel bad | get |
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
