第11题: [单项选择]She had to exercise all her tact to prevent ______ between the two opinionated guests. A. conflicts B. contentions C. contests D. clashes 参考答案:D 答案解析:名词辨析题。conflict用于指敌对组织的公开的战争或对立势力间的内部斗争;contention仅仅限于口头争论,表现为激烈的辩论;contest意思是“竞争,争夺”,可以指友好的竞争也可指带有敌意