1801

https://ke.qq.com/webcourse/index.html?cid=540370&term_id=100637952&lite=1&from=800021724#taid=11308114&vid=5285890800124261421

https://ke.qq.com/webcourse/index.html?cid=540370&term_id=100637952&lite=1&from=800021724#taid=12657486&vid=5285890800248341726

1802

https://ke.qq.com/webcourse/index.html?cid=540370&term_id=100637952&lite=1&from=800021724#taid=11667086&vid=5285890800164036891

https://ke.qq.com/webcourse/index.html?cid=540370&term_id=100637952&lite=1&from=800021724#taid=12557221&vid=5285890800239530622

1803

https://ke.qq.com/webcourse/index.html?cid=540370&term_id=100637952&lite=1&from=800021724#taid=11197622&vid=5285890800106781632

https://ke.qq.com/webcourse/index.html?cid=540370&term_id=100637952&lite=1&from=800021724#taid=12111753&vid=5285890800204206213