1.
![](http://static.xuejinqu.com/qimg/0e1/0e1b85e9dbc7da6c617ab2ac33c41171.png)
A.This is the hand. | B.This is the head. |
![](http://static.xuejinqu.com/qimg/71d/71dbe22b2130598bb15e2c409dc270fc.png)
A.Let's make a puppet. | B.Let's go to school. |
![](http://static.xuejinqu.com/qimg/320/320c62a27cf49ccfd3832a49e551b6ae.png)
A.Clap your hands. | B.Stamp your foot. |
![](http://static.xuejinqu.com/qimg/d2d/d2d63409496c9e5a588c6140a537aa47.png)
A.Open your eyes. | B.Close your eyes. |
![](http://static.xuejinqu.com/qimg/ab4/ab4e15f5d4beadf7deed1914eb1dfc56.png)
A.Look at my mouth. | B.Look at my nose. |
![](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)