单选题 25.  An accurate job description helps management and employees by ______ a worker's exact responsibilities, which makes evaluating an employee's performance a much simpler task.
【正确答案】 B
【答案解析】 选项A错误，insist意思是“坚持，坚定”，不适合用来描述“分清”职责。选项B正确，clarify意思是“澄清，阐明”。选项C错误，procrastinate意思是“耽搁，延迟”。选项D错误，encourage意思是“鼓励，激励”。