1.Teachers’ Day is in
![](http://static.xuejinqu.com/qimg/212/2121294ded516cd025228b957d124940.png)
2.China’s National Day is in
![](http://static.xuejinqu.com/qimg/2d2/2d2dbccee3b19778ba8410302a889378.png)
3.American Thanksgiving Day is in
![](http://static.xuejinqu.com/qimg/0f9/0f93e913153c4c44209aaa3be50b8850.png)
4.Christmas is in
![](http://static.xuejinqu.com/qimg/187/1874242dba838b670cb5a205c34f575f.png)
5.Mid-Autumn Day is in
![](http://static.xuejinqu.com/qimg/755/755729291b692df04fe79b38888b2914.png)
![](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)