介绍得很好，但当我看完视频然后做测验时，我觉得材料并没有准确突出测验所需要的内容。####[['NULL', 'course general', 'positive'], ['视频', 'presentation relatability', 'positive'], ['材料', 'material relatability', 'negative'], ['测验', 'assignments relatability', 'negative']]