(1)
![](http://static.xuejinqu.com/qimg/a1a/a1a216e54a6fe18fcc208dfd0833ca97.png)
It's time for__________
______________________.
(2)
![](http://static.xuejinqu.com/qimg/5b5/5b57b3217afe5b1d07237630278bcbc2.png)
Let's ________________
______________________.
(3)
![](http://static.xuejinqu.com/qimg/ba9/ba9b498b3f586b21d6b9cbbd66f5f1cf.png)
It's________o'clock.
(4)
![](http://static.xuejinqu.com/qimg/f02/f02c043ad08ec311512c1d5bfa8e3aa4.png)
It's time to________.
(5)
![](http://static.xuejinqu.com/qimg/5a4/5a439147eb0fae875831610a4e829cb9.png)
Let's____________.
![](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)