语法与词汇 To that world assembly of sovereign states, the United Nations, we renew our pledge of support: to prevent it from becoming merely a forum for invective.无
【正确答案】Incentive means rude and unpleasant remarks used to express blame and anger. 
【答案解析】句意： 对于那个主权国家的世界性会议组织——联合国， 为了防止它沦为仅仅用来谩骂攻讦的论坛， 我们现在重申对它的支持承诺。 incentive指“谩骂， 辱骂”。