1.-Where’s the ball?
- It’s in the hat.
![](http://static.xuejinqu.com/qimg/fb8/fb89938092ec033cbd2dfb1f78659870.png)
(√) ()
2.–Where’s the bag?
– It’s on the desk.
![](http://static.xuejinqu.com/qimg/0ec/0ec97d752e9f787213cb3d448cc59191.png)
(√) ()
3.–Where’s the pencil?
- It’s under the book.
![](http://static.xuejinqu.com/qimg/1df/1dfd4d909008a5a4234301d5fa901ce2.png)
() (√)
4.–Where’s the cat?
– It’s in the bag.
![](http://static.xuejinqu.com/qimg/f4b/f4b866ec716e8d5847cbf5b371a0e019.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)