金の話

http://www.luke54.org/view/1060/7243.html?r=2

https://www.youtube.com/watch?v=4qsvvokeFM4

https://www.youtube.com/watch?v=yMimAX8KTkw

 https://ja.wikipedia.org/wiki/%E3%82%A6%E3%82%A9%E3%83%BC%E3%83%AB%E8%A1%97%E5%A4%A7%E6%9A%B4%E8%90%BD_(1929%E5%B9%B4)


 http://jamesz.pixnet.net/blog/post/16942263-%E7%82%BA%E4%BD%95%E8%A6%81%E5%A2%9E%E5%8A%A0%E8%B2%A8%E5%B9%A3%E4%BE%9B%E7%B5%A6%3F

 https://flipedu.parenting.com.tw/article/3418