纪录片《世界历史》,http://www.bilibili.com/video/av3633876/
http://v.youku.com/v_show/id_XNzA0ODYyMTY=.html?f=5517394&spm=0.0.0.0.YM...
crash course S1(42集) http://open.163.com/movie/2015/12/V/5/MBB0DHT94_MBB0E5OV5.html
https://www.youtube.com/channel/UC9NsQppc4EKreie8jFfGCvw/videos?sort=dd&...
https://www.youtube.com/channel/UC7tDCRjcmHJgMSFeVH_BQrQ/videos?view=0&s...
https://www.youtube.com/channel/UC88lvyJe7aHZmcvzvubDFRg/videos
世界文化常识 Ω听 https://www.ximalaya.com/lishi/19990886/ ,
olttsjls, olttsjwh,
纪录片《俯瞰美国》,
纪录片《金色道钉》,华工与太平洋铁路