after today's lecture, i realized why men have so many differences with women. I think it's true that men are always devoid of eye contact when they talk to others. Based on my own experiences, culture differences play an really important role in this issue. For instance, in China, if you keep looking at a girl's eyes when you are tlaking with her, it's not very polite. Moreover, I realized that in a lecture, the lecturer should have abilities to attract your audiences to listen so that the lecture can choose some good and funny examples for his/her lecture because those small examples not only can help your audiences anderstand you but also can attract your audiences keep listening.