好像是類似邏輯的題目，並不是原文喔~請注意這點.!!

GWD-6-Q21:


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?


A)Typically, a SaleCo employee’s least productive hours in the workplace are
the early afternoon hours.

B)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.

C)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.

D)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.

E)Those SaleCo employees who have a four-day workweek do not take any of their
 office work to do at home on Fridays.

Ans:C 注意C中的alone.