【题目】Over the years, people have learned from ants that teamwork and perseverance are indeed two key ______ to success.
A. certificates B. ingredients
C. approaches D. instructions
在线课程【答案】B
【解析】试题分析：考查名词辨析。A.证书，执照；B.组成部分，因素；C.方法；途径；接近；D.程序，说明书。句意为这些年来，人们已经从蚂蚁身上学习到团队合作和坚持不懈是成功的两个重要因素。故选B