【正确答案】:
THROUGHOUT HISTORY, HUMAN SOCIETY HAS DEVELOPED AND PROGRESSED IN THE PROCESS OF CONSTANTLY FINDING AND SOLVING PROBLEMS AND LEARNING FROM EXPERIENCE. 
【题目解析】:本题考查并列结构的用法。原文中“发现问题、解决问题和总结经验”是三个并列的动宾短语,所以要统一用现在分词形式。
THROUGHOUT HISTORY, HUMAN SOCIETY HAS DEVELOPED AND PROGRESSED IN THE PROCESS OF CONSTANTLY FINDING AND SOLVING PROBLEMS AND LEARNING FROM EXPERIENCE.