1.
![](https://img./dksih/QBM/2019/8/8/2264254720770048/2267382724870145/STEM/611dc7bbaae145748eea8965e9884cd5.png?resizew=111)
A.It is a pie. | B.It is a cake. |
![](https://img./dksih/QBM/2019/8/8/2264254720770048/2267382724870145/STEM/d06816c7e8a94742ae3f929415d6d2af.png?resizew=108)
A.It is a sweet. | B.It is a hot dog. |
![](https://img./dksih/QBM/2019/8/8/2264254720770048/2267382724870145/STEM/57ec8f8d59c14861839634300864c3c2.png?resizew=59)
A.Would you like an ice cream? | B.Would you like a hot dog? |
![](https://img./dksih/QBM/2019/8/8/2264254720770048/2267382724870145/STEM/2a0bbc8a2cfc46ba96e8f824ddd99e97.png?resizew=100)
A.It is a sweet. | B.It is an egg. |
![](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)