The first week of my summer vacation was exciting. I was1.(自由的,空闲的)! I spent much time on my phone without doing my2.(家庭作业). Mom was angry and told me I could only use it3.(在……之间) 7:00 pm. and 9:00 pm.
I felt lost and kept asking4.(我自己) what fun I could have during the day. Mom offered me a challenge. If I could follow the same ant for5.(十) minutes, I'd get a prize.
I thought for a while and agreed. I6.(选择) the biggest ant in the yard and followed it. I saw it create a bridge to cross a7.(深的) hole. I dropped some bread and soon it began8.(吃). It even brought friends to carry some home. I never thought watching ants could be so much fun.
After that, I found other interesting things to do. I built a house for birds, planted9. (树) in the yard and borrowed books from the library. 10.(虽然) I didn't use my phone often, I had a fantastic summer.
![](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)