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时间 人物 | 7: 00 | 8: 30 | 21: 30 | 6: 00 | 8: 00 |
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Father | √ | ||||
Mother | √ | ||||
Uncle | √ | ||||
Aunt | √ | ||||
Sister and brother | √ |
1．Leo's mother is a sales assistant in a department store.
2．Leo's father is a worker in a factory.
3．Leo's uncle goes to work at half past eight every morning.
4．Leo's aunt goes to work at half past nine in the evening. She is a nurse.
5．Leo's brother and sister are students. They go to school at eight.
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
