【题目】People from all walks of life are eager for success, ______lack of confidence, however, is a great barrier.
A. where B. which
C. to which D. beyond which
在线课程【答案】C
【解析】
考查定语从句。句意：各行各业的人都渴望成功，然而，缺乏自信是一个巨大的障碍。此处success是先行词，指物；a great barrier to---，对---是一个大的障碍；所以此处用介词to+which引导非限制性定语从句，故选C。