参考答案：D

解析：[听力原文]The decentralization, diversity, academic freedom and shared governance that have evolved over the past two centuries have made America’s system of higher education one of the most accessible and democratic in the world. Today educators from around the globe are turning to U.S. institutions of higher learning for inspiration.

[分析]： 因果关系的判断。 根据原文可知“the decentralization, diversity, academic freedom and shared governance”使得美国高等教育体系成为世界上最易接近、最民主的教育体系。由此可见，只有选项d的内容符合这一逻辑关系。[解题关键] 近义词替换。此题能够正确找到原文相关处的关键是理解题干中a great success与原文the most accessible and democratic意思相近。