Perhaps there is some element associated with the preservation of memory that, when carried to ______, inhibits that memory instead.

【正确答案】 C

【答案解析】解析：句意：当过度使用的时候，也许一些与记忆保存相关的要素反过来会影响记忆力。ex—cess过度地。extreme极端。excessive过多的，过分的。exceed超过，胜过。