題目：
After making a presentation in class, you want to evaluate it. Which of the following do you think would be better for you?
1. Watch the recoding by yourself.
2. Invite other attenders to discuss and give opinions.
觀點：
1.觀念（concept）：和別人討論給你除了自己以外，來自別人的意見和建議
2.效率（efficiency）：自己看錄像能看到更多細節(jié)，所以能更高效反饋問題？——反駁！討論才更高效
范文
Making presentations in schools is a good way to improve one’s speaking skills and leadership. Analysing one’s presentation record by oneself and discussing with other participants are both common measurements for obtaining feedbacks of one’s presentation. However, compared with the former, the latter measurement is arguably more optimal.
First, in comparison with analyzing one’s presentation record alone, without doubt, discussing with other participants about the presentation can provide the speaker more helpful opinions on the presentation. Specifically, a good presentation should have certain effects on audiences. However, one who chooses to watch one’s presentation record alone, can only consider issues from one’s own view. In contrast, by discussing with other participants, not only can it provide the speaker opinions and suggestions from audiences’ perspectives, but it also can help the speaker to find out more problems that are not that apparent.