A.
![](http://static.xuejinqu.com/qimg/6b6/6b668a380021b7148b120d0dff74b437.png)
B.
![](http://static.xuejinqu.com/qimg/a99/a99053caa6da26412ee79c1a70b97637.png)
C.
![](http://static.xuejinqu.com/qimg/10d/10d8a1fc9749893798db6c20b8909558.png)
D.
![](http://static.xuejinqu.com/qimg/670/670ec34511ffaf9a04eb4f1846aa4822.png)
1.This stamp is from China. It has got a picture of the West Lake on it. (
2.This stamp is from the UK. It has got a picture of Big Ben on it. (
3.These stamps are from the US. One of them has got a famous man on it. (
4.These stamps are from Canada. They have got famous people on them. (
![](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)