Engineering classes at the university are tough, and struggling students sometimes go to extremes in order to pass. Grading exams one semester, I got to this question: “What is the relationship between kinetic and potential energy?” One student, obviously stumped, decided to get clever and wrote, “As far as I know, they're just friends, but there could be something else going on there.”
大學(xué)的工程課程難度很大,成績(jī)差的學(xué)生為了要得個(gè)合格有時(shí)要走極端。有一個(gè)學(xué)期我在批考試卷的時(shí)候,批到一道題“動(dòng)能和勢(shì)能之間有什么關(guān)系?”一個(gè)顯然發(fā)懵的學(xué)生答道:“就我所知,它們只是朋友。不過(guò),或許它們之間還有點(diǎn)什么事兒?!?