课件链接：https://appslgxrrye5060.xet-pc.citv.cn/detail/l_67bfefe0e4b0694c5a9c802e/4?app_id=appslgxrrye5060&available=true&entry=2&entry_type=2002&scene=%E5%88%86%E4%BA%AB&share_scene=1&share_type=5&share_user_id=u_659c9bc232d8b_RxYr1HNl5w&type=2&liveType=previous%3Ftype&fromH5=true

视频链接：https://appslgxrrye5060.xet-pc.citv.cn/detail/l_67bfefe0e4b0694c5a9c802e/4?app_id=appslgxrrye5060&available=true&entry=2&entry_type=2002&scene=%E5%88%86%E4%BA%AB&share_scene=1&share_type=5&share_user_id=u_659c9bc232d8b_RxYr1HNl5w&type=2&liveType=previous%3Ftype&fromH5=true