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Hello, my name is Bob. I’m a cute boy. I like English very much. I often go swimming and read books on Saturday. On Sunday, sometimes I watch TV and play basketball, and go to the supermarket with my mother. I can help her to take some heavy things, and mother is very happy for this. But every night, I always do my homework. I have no time to do anything else. I never play games. So I’m a good student.
| Always | Often | Sometimes | Never | |
| do my homework | √ | |||
| go swimming | √ | |||
| read books | ||||
| watch TV | ||||
| play computer games | ||||
| go to the supermarke | ||||
| play basketball |
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
