( ) (1)The bird is singing.
![](http://static.xuejinqu.com/qimg/f06/f06a6d1590fcf211dbcae7a3cad80a4b.png)
( ) (2)Spring comes, and the birds come.
![](http://static.xuejinqu.com/qimg/788/78884862610b757768dfe1e01ea52d43.png)
( )(3)They’re flying kites.
![](http://static.xuejinqu.com/qimg/21e/21e6c5d02965a5c3789660200d31b42a.png)
( ) (4)We are going on spring outings.
![](http://static.xuejinqu.com/qimg/b2e/b2e0e9a3ada70dc8cf2d5d87e20d352b.png)
( ) (5)The bird is flying in the sky.
![](http://static.xuejinqu.com/qimg/c99/c9953f918e75d37dfd041ebe552df9fc.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)