![](http://static.xuejinqu.com/qimg/a2a/a2a4d29bfe1db4002d166805a9be375c.png)
Sam:_____________________________?
Jim: It was so happy.
Sam:We took a long trip last summer holiday.
Jim: Wow! ________________________?
Sam: We went to Beijing.
Jim: ____________________________?
Sam: I went there by train. We read books on the train.
Jim: What did you do on your holiday?
Sam: We visited __________, __________ and bought many clothes.
Jim: What else?
Sam: We rowed a boat and took many beautiful pictures in Beihai Park. We ategood food, too.
Jim: It’s so wonderful!
Sam: _____________________?
Jim: Of course, we had a good time in Beijing.
![](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)