系统解析:推断题。选项A实际上是文章第一段的前两句话。选项B是文章第三段的内容。选项C是文章第三段的主题句,即老板在衡量职员时,不仅要考虑他的工作表现,还要考虑他在工作上所花费的时间。选项 D 来自文章第二段“Apparently, many people believe that the more time a person spends at work, the more she or he accomplishes. However, the connection between time and productivity is not always positive.”,however后面所说的是事实一一时间与生产率之间的关系并不总是成正比的。因此答案是D项。