单选题 It"s possible that while you are at work, you may dream about a month of Sundays, but your boss wishes for a week of Tuesday. That"s because he probably knows that productivity is one of the main factors bolstering a company"s growth. And a recent poll shows that workers are most productive on Tuesdays! Accountemps, an employment agency, conducted a national survey of office managers, which shows that by the middle of the week, they see a dramatic productivity decrease. While Monday is considered second in "productivity value," only nine percent of office managers think Wednesday is the peak productivity day. Five percent believe it is Thursday. And Friday, well, you can just imagine! However, forty-eight percent of the managers polled said that Tuesday is, by far, the most productive day of the week.
A close analysis of workweek rhythms would turn up some obvious reasons for those survey results. First of all, Monday is overloaded with meetings, designed to "get things moving," and everybody knows meetings aren"t very productive. Wednesday is "hump day" (驼峰日) —get over it as painlessly as possible, a worker thinks, and the week is more than halfway over. On Thursday, people are running out of steam; and Friday, everybody"s thinking about the weekend. There are reasons why the other days aren"t productive, but what makes Tuesday special? Tuesdays, employees hit peak performance because they are very focused on day-to-day activities. Also, it"s usually the first day of the week when they"re focused on their own task. They"re not in meetings that take them away from their primary responsibilities. Actually, Tuesdays can be quite hectic. Workers are arriving at work fairly frantic. And so, in 10 hours, they"re doing 20-hour work. That"s productive, but it"s also tough.
This does not mean that nothing happens on the last three days of the workweek. Things do not get so lax that people are sitting with their feet on desks, sipping coffee and talking on the phone all day, but there"s a definite lack of focus. The pace softens and the rhythm slows down. And this is not healthy: it produces fatigue and lowers productivity. To prevent this midweek slowdown, some management consultants suggest that employers avoid jamming so many meetings into Mondays. Work deadlines can be rescheduled to stretch out the workflow. Variations in productivity are only natural, but both workers and bosses win when the peaks and valleys are less dramatic than they are now.

单选题 According to the poll, which of the following days is most productive?

单选题 The peak productivity day of the week is marked by ______.

单选题 The word "lax" in the last paragraph means ______.

单选题 With respect to the changes in productivity, the text suggests that ______.

单选题 The author has explained all of the following EXCEPT ______.