1.星期六早上______________________ 2.洗车______________________
3.做早饭______________________ 4.扫地______________________
5.做晚饭______________________ 6.洗盘子______________________
7.擦桌子______________________ 8.吃水果______________________
9.帮助他______________________ 10.在厨房里______________________
11.在客厅______________________ 12.在他的卧室____________________
13.他现在正在干什么?____________________________________________
14.蒂姆和汤姆正在干什么?____________________________________________
15.你正在干什么?____________________________________________
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