问题
选择题
Genius is a complicated concept , many different factors.
A．involved
B．involving
C．to involve
D．being involved
答案
答案：B
题目分析：句意：天才是一个复杂的概念，涉及很多因素。此处相当于一个非限制性定语从句which involves many different factors.将其改成短语的形式就是现在分词短语involving many different factors.