A.
![](https://img./dksih/QBM/editorImg/2023/8/25/9c9ac260-6d90-4c97-a518-9a919a53633b.png?resizew=120)
![](https://img./dksih/QBM/editorImg/2023/8/25/f01a08d7-0ca9-4597-ae25-c826462c4060.png?resizew=44)
![](https://img./dksih/QBM/editorImg/2023/8/25/6659b5eb-c95e-4c20-b1eb-287216d9d14f.png?resizew=87)
![](https://img./dksih/QBM/editorImg/2023/8/25/5662ff13-4850-4b5e-a0ec-72f233224c89.png?resizew=96)
How do you feel?
1.Sometimes(有时候) I feel happy.2.Sometimes I feel sad.
3.Sometimes I feel cold.
4.Sometimes I feel tired.
![](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)