in fact i gave up this module some days ago. i just met a girl from EE year3 accidentally when i was hopelessly walking in the street. she encouraged me and helped me to regain my confidence. after hearing her words, i said to myself "i am not stupid". and now i truely understand the author　莫波桑：“偶然的一件小事，它可以成全一个人，也可以败坏一个人。”