A.
![](http://static.xuejinqu.com/qimg/4e1/4e128c77fd898cbf8b3f78d8b1799b26.png)
![](http://static.xuejinqu.com/qimg/6f7/6f7aa25a1bcc49043d7ffcdccd8227b9.png)
![](http://static.xuejinqu.com/qimg/966/9662b83955b98f2633b1c99ec5807ac4.png)
![](http://static.xuejinqu.com/qimg/5d9/5d990dcab4f6a875d1ea4591892fb60e.png)
![](http://static.xuejinqu.com/qimg/fc8/fc8a66a2c3dd34fb284c2b827a58cba6.png)
![](http://static.xuejinqu.com/qimg/b3e/b3e2bfa27c34f33fc391a4491056e640.png)
1.Peter is a postman. (________)
2.My father is a driver. (________)
3.My mother is a teacher. (________)
4.Jack is a farmer. (________)
5.My uncle is a doctor. (________)
6.My aunt is a nurse. (________)
![](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)