第18题: [单项选择]Moreover, the examiners had decided in advance to fail half the candidates, ____________ is something you may hardly believe. A. that B. what C. it D. which 参考答案:D 答案解析:此外,主试人员事先已经决定要淘汰一半应考人,这可能是你很难相信的事。本题考点为非限定定语从句的用法,关系代词which在句中指代其前面的整个句子。