1.
![](http://static.xuejinqu.com/qimg/602/602095651ebb6299fc0dc6554532add5.png)
A.Wash your feet. | B.Touch your feet. |
![](http://static.xuejinqu.com/qimg/63e/63eba507dbb061488456b666b3d59df8.png)
A.Clean your eyes. | B.Clean your ears. |
![](http://static.xuejinqu.com/qimg/3e8/3e8193febdc660abeebeb9e5ee1efa53.png)
A.Wash your face. | B.Clean your nose. |
![](http://static.xuejinqu.com/qimg/d11/d1110c43ff10ac449436d97d745f8404.png)
A.Wash your hair. | B.Wash your hands. |
![](http://static.xuejinqu.com/qimg/d57/d5710f4cc137ebc99ae6bf62d4bbb21e.png)
A.Wash your hair. | B.Touch your hair. |
![](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)