St．Louis has replaced Camden, New Jersey ________ the most dangerous US city, according to a study based on FBI crime data which was released Monday．
A.forB.toC.asD.with在线课程C
考查介词的用法。句意“根据一项周一发布的基于FBI犯罪数据的研究，圣路易斯已经取代卡姆登和新泽西，成为美国最危险的城市。”A“为了”；B“到......”；C“作为”；D“和，带有”。故选C。