1. I have a ________ .
![](http://static.xuejinqu.com/qimg/e15/e154d13a6b06845f8fcaaa45938265ef.png)
2 . Do you have a ______ ______ ?
![](http://static.xuejinqu.com/qimg/700/7009709a5d08cda11ee1be38e8e505fb.png)
3. I need a new______ . Where can I buy one ?
![](http://static.xuejinqu.com/qimg/152/1523631add18d683f9aa68bca310bd90.png)
4. --- What are you going to buy ?
![](http://static.xuejinqu.com/qimg/615/615e35c4d18d048f06dfffe26eb95f81.png)
--- I’m going to buy a ______ ______ .
![](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)