单选题 The ______ of climbing to the top of the corporate ladder is best defined in the new book published by Scott Thompson, one of the most successful businessmen in history.

A、 challenge
B、 dimension
C、 introduction
D、 compassion

【正确答案】 A

【答案解析】本题需选择适当的名词。横线后的介词短语of climbing to the top of the corporate ladder(晋升到公司的最高职位)可提供一些线索，晋升过程不可能很轻松，因此选择词义为“挑战”的(A)challenge。