1.
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![](http://static.xuejinqu.com/qimg/703/703a7433ff703902329835037465d51f.png)
![](http://static.xuejinqu.com/qimg/6d3/6d3419033cfe78d486389acc2fa4df69.png)
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9:20 7:30 9:30 3:40
1. -When do you ______________, Li Ping?
-I ______________.
2. -When do you ______________, Peter?
-I ______________ at 7:30.
3. -When do you ______________ , Chen Jie?
-I ______________ at 9:30.
4. -When do you _______________, John?
-I ______________ at 3:40.
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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)