1.It’s
![](https://img./dksih/QBM/2019/2/12/2138990390345728/2164755342819328/STEM/8049d3387c4f407d989bbb10698ff706.png?resizew=191)
It’s time to go to
![](https://img./dksih/QBM/2019/2/12/2138990390345728/2164755342819328/STEM/1834063e59cd45eabdf9ab9f3f71bc38.png?resizew=108)
2.What time is it ?
![](https://img./dksih/QBM/2019/2/12/2138990390345728/2164755342819328/STEM/de67b137bbb44dfbbef4f37ad29d083b.png?resizew=101)
3.It’s
![](https://img./dksih/QBM/2019/2/12/2138990390345728/2164755342819328/STEM/4a3d741317e04473afac23f68930dbc6.png?resizew=81)
It’s time for
![](https://img./dksih/QBM/2019/2/12/2138990390345728/2164755342819328/STEM/6f9627298c6340aba900d7244a9dde5f.png?resizew=105)
4.Is this a TV room?
![](https://img./dksih/QBM/2019/2/12/2138990390345728/2164755342819328/STEM/0648648f522442beab68f0ad10424759.png?resizew=110)
5.What time is it?
![](https://img./dksih/QBM/2019/2/12/2138990390345728/2164755342819328/STEM/513da50fd16941d5a8aa5aea96657153.png?resizew=97)
![](http://static.xuejinqu.com/images/y-prise.png)
同类型试题
![](http://static.xuejinqu.com/images/medal.png)
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
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)
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
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)