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An overwhelming proportion of the most productive employees at SaleCo’s regional offices work not eight hours a day, five days a week, as do other SaleCo employees, but rather ten hours a day, four days a week, with Friday off. Noting this phenomenon, SaleCo’s president plans to increase overall productivity by keeping the offices closed on Fridays and having all employees work the same schedule—ten hours a day, four days a week.

Which of the following, if true, provides the most reason to doubt that the president’s plan, if implemented, will achieve its stated purpose?

以下是引用xurui0457在2006-9-12 16:01:00的发言：

Q21:

Which of the following, if true, provides the most reason to doubt that the president’s plan, if implemented, will achieve its stated purpose?

Typically, a SaleCo employee’s least productive hours in the workplace are the early afternoon hours.
None of the employees who work four days a week had volunteered to work that schedule, but all were assigned to it by their supervisors.
Working ten hours a day has allowed the most productive employees to work two hours alone each day in their respective offices relatively undisturbed by fellow employees.
Employees at SaleCo are compensated not on the basis of how many hours a week they work but on the basis of how productive they are during the hours they are at work.
Those SaleCo employees who have a four-day workweek do not take any of their office work to do at home on Fridays.

Answer: C

C选项说那些每天工作10个小时的人,他们效流高是因为每天的有2个小时不被打扰而使他们能安心工作.

要是象文章说的所有人每天都工作10个小时的话,那些效流高的员工就不一定会有2个高效工作的小时,就有可能效流下降

对d有一些疑问，我觉得d也是能引起doubt的，只不过doubt的程度不如c，不知道nn们怎么看？因为d说职工们的薪水只与productive有关，与工作时间无关，所以改变工作时间不能对职工有吸引力，因此也不能增加productive。