This is common sense for college students, no matter what is your major, you should know that. Agree? (students nodding) Good, I am glad you all agree.

• 叙述去年某个学生问的问题后)这是常识；不管你主修什麽都该会.；大家同意吗?(大家惶恐的纷纷点头后；他说)既然大家都同意就好