问题
选择题
The process of growing up is complex for every person, ________ there are many influential factors in a person's growth as well as the development of his personality.
A．but
B．so
C．for
D．therefore
答案
答案：C
C 句意：每个人的成长过程都是复杂的，因为影响一个人成长和个性发展的因素有很多。for“因为”，符合题意。