1.—How heavy are you? —I’m 45 kilograms.
![](http://static.xuejinqu.com/qimg/92f/92f06ba235548bdda15e46cf79078f3b.png)
2.I cleaned my room last Sunday.
![](http://static.xuejinqu.com/qimg/65a/65a740e28c72f6c311580c67c39fe7d5.png)
3.Let’s go to the bookstore.
![](http://static.xuejinqu.com/qimg/528/5284e74d273497ba520b114990f0cd2b.png)
4.I had a bad cold and slept on the bed.
![](http://static.xuejinqu.com/qimg/52c/52c6a1b50de9c9bdaa3cff7ed79277e8.png)
5.People went to work by bus three years ago.
![](http://static.xuejinqu.com/qimg/145/14557e31721e54d42a11cda434589184.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)