必上的必上背诵一堂历史课丨这一刻， 小学生自发背诵起“我是历史%E3%80%90WhatsApp%20+86%2015855158769%E3%80%91birth%20ball%20exercises中国人，我爱我的课丨刻%E3%80%90WhatsApp%20+86%2015855158769%E3%80%91birth%20ball%20exercises祖国......”。