1. I like watermelons.
2. I have seven rulers.
3. —Who’s that woman?
—She’s my mother.
4. —Do you like bananas, Chen Jie?
—Sorry, I don’t like them.
![](http://static.xuejinqu.com/qimg/331/33182bfd31a21cfea217e28e2a8550df.png)
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![](http://static.xuejinqu.com/qimg/c31/c311b6d9d9b57709542d60fa6048b3b2.png)
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![](http://static.xuejinqu.com/qimg/c32/c3230a9d210c37670316b747324a3847.png)
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![](http://static.xuejinqu.com/qimg/a08/a0899068dd7b320a761af092c7895f95.png)
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![](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)