https://online2.tingclass.net/lesson/shi0529/0009/9907/506.mp3
https://image.tingclass.net/statics/js/2012
講解文本：
know-it-all 自稱無所不知的，自以為什么都懂的人
Nobody likes to talk to a know-it-all.
沒有人喜歡和自以為無所不知的人談話。
People think that I am a know-it-all. Do you think so?
很多人說我不懂裝懂，你也這樣覺得嗎?
瘋狂練習(xí)吧!
