1.
![](http://static.xuejinqu.com/qimg/8e8/8e85fdbcdc72f8825cc45eb8830792ec.png)
2.
![](http://static.xuejinqu.com/qimg/bd7/bd77519befb53ad645ea56dd9d395159.png)
3.
![](http://static.xuejinqu.com/qimg/452/4521f76513627374b829a21af54a110b.png)
4.
![](http://static.xuejinqu.com/qimg/2be/2be50760c6958ced6393b8bac80db987.png)
5.
![](http://static.xuejinqu.com/qimg/ef3/ef355d20b5b5907d27d4bfdb2313d65c.png)
A.twelve boys B.climb the tree C.ride a horse D.ride a bike E.eat fruit
![](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)