I teach economics at UNLV (University of Nevada,Las Vegas)three times per week. Last Monday,at the beginning of the class,I cheerfully asked my students how their weekend had been.One young man said that his weekend h...I teach economics at UNLV (University of Nevada,Las Vegas)three times per week. Last Monday,at the beginning of the class,I cheerfully asked my students how their weekend had been.One young man said that his weekend had not been so good.He had his wisdom teeth removed.The young man then proceeded to ask me why I always seemed to be so cheerful.展开更多
文摘I teach economics at UNLV (University of Nevada,Las Vegas)three times per week. Last Monday,at the beginning of the class,I cheerfully asked my students how their weekend had been.One young man said that his weekend had not been so good.He had his wisdom teeth removed.The young man then proceeded to ask me why I always seemed to be so cheerful.
