【正确答案】工具和技术本身作为根本性创新的源泉多年来在很大程度上被历史学家和科学思想家们忽视了。

【答案解析】[精解] Over the years，tools and technology themselves as a source of fundamental innovation have largely been ignored by historians and philosophers of science．
句子分析：
一、句子可以拆分为三段：Over the years，tools and technology themselves as a source of fundamental innovation/have largely been ignored/by historians and philosophers of science．
二、句子主干结构是一个简单的被动语态句：tools and technology．．．have largely been ignored by．．．主语部分有一个themselves 反身代词。
as a source of fundamental innovation 介词短语作定语。
三、词的处理：
Over the years 多年来；
philosophers of science 科学思想家们；