Language, culture, and personality may be considered ________ of each other in thought, but they are inseparable in fact.
句意：语言、文化和个性在思想上可以被认为是相互独立的，但事实上它们是不可分割的。independently独立地（常与“of”搭配）。indistinctly朦胧地。separately分别地；分离地。irrelevantly不 相关地。因此，本题的正确答案为D。