The first African-American president of the United States received a(n) ____ welcome in the African

countries, where he was received as a returning son. [ ]

A. romantic

B. bureaucratic

C. enthusiastic

D. optimistic

下列哪项不属于城市公共交通换乘枢纽

A．各类城市公共交通线路的换乘枢纽

B．各类城市公共交通线路与城市大型公共设施人流的换乘枢纽

C．各类城市公共通线路与城市对外客运交通的换乘枢纽

D．各类城市公共交通线路与转换公共交通的其他交通工具的换乘枢纽