1. cat 2. dog 3. duck 4. bird 5. pig 6. chick 7. hen 8. fox
a.
![](https://img./dksih/QBM/2019/9/24/2297815364608000/2357779379429376/STEM/85265689bb1e4302a88b906dd9c8c0f1.png?resizew=31)
![](https://img./dksih/QBM/2019/9/24/2297815364608000/2357779379429376/STEM/0719d2f2da0340c98062bb401e2814a3.png?resizew=66)
![](https://img./dksih/QBM/2019/9/24/2297815364608000/2357779379429376/STEM/afbfec6ae12b4c47adf021eec7779b17.png?resizew=46)
![](https://img./dksih/QBM/2019/9/24/2297815364608000/2357779379429376/STEM/7d00794475ae4d098c25a1fbb68c1ba1.png?resizew=35)
![](https://img./dksih/QBM/2019/9/24/2297815364608000/2357779379429376/STEM/48529abcbdb340c1886b02b6e38cafe0.png?resizew=50)
![](https://img./dksih/QBM/2019/9/24/2297815364608000/2357779379429376/STEM/902e126399d34911acb316c5da9e4ded.png?resizew=67)
![](https://img./dksih/QBM/2019/9/24/2297815364608000/2357779379429376/STEM/4dee0695812545f7b5eeed817aab3083.png?resizew=54)
![](https://img./dksih/QBM/2019/9/24/2297815364608000/2357779379429376/STEM/4cc4e217181440a4a02ee4034c471c0e.png?resizew=40)
![](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)