题目如下：
Most employees in the computer industry move from company to
company, changing jobs several times in their careers. However,
Summit Computers is known throughout the industry for retaining its
employees. Summit credit its success in retaining employees to its
informal, nonhierarchical work environment.
Which of the following, if true, most strongly supports Summit's
explanation of its success in retaining employees?
A) Some people employed in the computer industry change jobs if
they become bored with their current projects
B) A hierarchical work environment hinders the cooperative exchange
of ideas that computer industry employees consider necessary for
their work
C) Many of Summit's senior employees had previously worked at only
one other computer company
D) In a nonhierarchical work environment, people avoid behavior
that might threaten group harmony and thus avoid discussing with
their colleagues any dissatisfaction they might have with their
jobs
E) The cost of living near Summit is relatively low compared to
areas in which some other computer companies are located
书中答案是B，我选的是D
我自己认为B是否命题架桥，并不能直接证明 nonhierarchical 的环境有助
于“留人”
听听大家见解...... | 
