题目解析:
implies,推理题。before,信号词判断可能是逆向推理(可以自行百度排中律了解这种逆向推理的本质)。按题干中名词及1904到原文1段定位 Beginning in 1904,American commercial filmmaking became increasingly oriented toward storytelling. 1904开始以叙事为导向,那么之前没有以叙事为导向。less likely to 与 increasingly oriented 相反 narrative films= storytelling。托福考试是证据型考试,推理题要遵循客观证据。如果原文找不到解题线索的,一般是犯了主观臆断的错误。所以 B。