Can you find out the flaw in their research papers?

参考答案: D

参考解析: 本句话的意思是：“你能指出他们论文中的缺陷吗?” defect：缺陷、不足，例如：Indecision is his chief defect．优柔寡断是他的主要缺点。argument:①争执、争吵、辫论，例如：We had an argument about politics．我们就政治展开了争论。②理由、论据、论点，例如：I accepted his argument that taxation should be increased．我接受了他提出的应该增税的论点。 failure：失败，例如：He was doomed to failure．他注定要失败。feature:①特征、特色，例如：This is a key feature of our society．这是我们社会的一个主要特点。②面貌、相貌，例如：He could recall her features very distinctly．他能够清晰地回想起她的容貌。③（报纸等的）特写、特别报导、专栏，例如：The local newspaper ran a feature on child labor．地方报纸登载一篇有关童工的特写；④（电影的）正片、故事片，例如：The feature begins at half past ten．电影正片七点半开始。