15.Barbara _____ in doing it again though she had failed more than a dozen times. A. consisted B. resisted C. assisted D. persistedB.arbara 芭芭拉barbarian 土人barren 贫瘠的embarrass 尴尬的ass 驴子、屁股、傻瓜crass 愚蠢的、蠢笨的assassin 暗杀者critique 批判、评价、评论assist 帮助assistant 助手consist (of) 组成persist (in) 坚持perpetual 永恒的persistent 固执的、永恒的、持续的adamant 固执的obstinate 固执的resist 拒绝Resistance 电阻insist 坚持