B成績出色時要盡量表揚-let A do that.

來源: 於 2011-07-03 17:09:01 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

公平對待A & B - impossible.  What you perceive fair is not necessarily how they perceive it.  So don't even waist your time and energy on that.