<p><span style="font-weight: 600; color: rgb(26, 26, 26); font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "WenQuanYi Micro Hei", sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">保持课堂活力,让课程内容被学生接受。</span></p>