单选题 3.  In those days, executives expected to spend most of their lives in the same firm and, unless they were dismissed for ______, to retire at the age of 65.
【正确答案】 C
【答案解析】 那时，经理们都希望在同一家公司度过大半生，并且希望在65岁时退休，除非因为不能胜任而遭到解雇。