非同步
https://www.youtube.com/watch?v=GDfSzD-XmYc&t=37s
https://wordwall.net/resource/22206610/%e5%81%a5%e9%ab%94ch6-2-%e7%be%8e%e5%9c%8b%e9%a3%b2%e9%a3%9f%e7%89%b9%e8%89%b2
上傳作業