问题
选择题
With our knowledge _________ practice, we can make contributions to our society.
A．to base on
B．basing on
C．based on
D．base on
答案
答案：C
考查非谓语动词作后置定语。our knowledge和base on之间是动宾关系，base sth on sth，要用过去分词based on。选C。