2【牛津版】英语三年级下4~6课同步视频

 Unit4

https://v.qq.com/txp/iframe/player.html?vid=m0374ybu0d6&auto=0&width=500px&height=375px

 Unit5

https://v.qq.com/txp/iframe/player.html?vid=a0374ctznfr&auto=0&width=500px&height=375px

 Unit6

https://v.qq.com/txp/iframe/player.html?vid=b037461byq6&auto=0&width=500px&height=375px