单选题
Scholars and students have always been travelers. The official case for “academic mobility” is now often stated in impressive terms as a fundamental necessity for economic and social progress in the world, and debated in the _____ of Europe, but it is certainly nothing new.无
【正确答案】
B
【答案解析】句意：“学术流动” 如今作为全世界经济与社会进步的一个基本需要，已成为有影响力的术语，它也成为欧洲各国讨论的核心问题，不过这并不新鲜。本题考查固定搭配，in the corridors of 表示“……的核心”，故选B。