Online teaching had provided important support for ensuring the basic education and teaching order during the COVID-19 period.With the improvement of online teaching design ability and the development of network technology,online learning has become a“new normal”.Howeve...MORE Online teaching had provided important support for ensuring the basic education and teaching order during the COVID-19 period.With the improvement of online teaching design ability and the development of network technology,online learning has become a“new normal”.Howe...