Now you have 10 minutes to prepare a 2-3 minutes impromptu speech entitled “How to Prevent________”(one of the diseasses you mentioned in the part of activities 横线部分是在上一个小节即activities 中你所提到的疾病的一种) Step 1: click the "10 minute timer" link: 10-minute timer .mp4 step 2:Start to write down the outline, key points, etc. of your speech on a piece of paper. After the 10 minute countdown ( 先点开 “10 分钟计时器 ” 链接,接着请在一张纸上开始写下你演讲的思路,大纲,要点等 。 ) Step 3 :Practice delivering this speech, and record the first drill into a video (record according to the real situation, even if there are errors, ignore the them), then upload the video as an attachment to the answer area. The teacher will grade based on the video as the result of the second class participation . ( 练习发表演讲,并将第一遍的演练录制成视频(就按真实情况录制,即便有错误也忽略错误),然后将视频以附件的形式上传至答题区。教师将根据视频评分, 作为第二次课堂参与的成绩 。 )