[[QOrDeR]]
![](http://static.xuejinqu.com/qimg/7b7/7b7850bc4a61899969af4a2a05752273.png)
A.It is a fish. | B.It is a hen. |
![](http://static.xuejinqu.com/qimg/345/345bf0f0555a9836bc7637ac1c16f2f4.png)
A.This is my s sheep. | B.It is a cow. |
![](http://static.xuejinqu.com/qimg/cab/caba6de0d06b46d73fbc34b0fe12e607.png)
A.Whose dictionary is it? | B.Whose activity book is it? |
![](http://static.xuejinqu.com/qimg/6fb/6fbed0b9cfef7dd4aa73f233a2d7217c.png)
A.What a big park! | B.What a big zoo! |
![](http://static.xuejinqu.com/qimg/924/9248736b0c3ca742c9ef22a309c0a17d.png)
A.He is dancing. | B.He is singing. |
![](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)