【正确答案】 D

【答案解析】[解析] 根据You have to be able to sell yourself and your ideas，both publicly and behind the scenes．．．It can mean being kind and helpful，or even trying，to please your superior，and then expecting something in return可知，要想得到提升只靠努力工作是不行的，还得给老板留下一个好印象。