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Xiaoyong’s weekday | Jack’s weekday | ||
7:40 | walks to school | 8:30 | goes to school by bus |
8:30 | starts school | 9:00 | starts school |
10:00 | does morning exercises | 10:00 | plays with friends in the playground |
15:00 | has Music | 15:00 | has PE |
17:00 | goes home | 15:30 | goes home |
1．How does Jack go to school?
2．Do they start school at the same (相同的) time?
3．What does Xiaoyong do at ten o’clock in the morning?
4．What time does Jack go home?
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
