单选题 The relatively theory is basically made up of two parts: the restricted and the general relativity theory.

【正确答案】 A
【答案解析】画线词的对应词为：fundamentally。二者共同的基本意思是：基本上、聪根本上。辨义：B．usually通常；C．frequently经常；D．approximately大约、近似地。