This new research goes                   the belief that animal facial expressions are largely unconscious reflections of internal feelings—rather than a way to communicate.

beyond

within

against

without

考查介词词义辨析。句意：这项新研究推翻了动物的面部表情在很大程度上是内心情感的无意识反映——而不是一种交流方式的观点。 A. beyond 超出；B. within 在……里面；C. against 反对；D. without 没有。go against 反对，推翻。根据“that animal facial expressions are largely unconscious reflections of internal feelings—rather than a way to communicate”并结合前文可知，新的研究推翻了以前的观点。故选C。