To______his great ambition of becoming well-known all over Denmark, Andersen, though very young, left home for Copenhagen to make his fortune.

A．hold up to

B．let up to

C．hang up to

D．live up to

一公民在地铁无意发现该市某单位公款旅游清单，花费之大，为之震惊，于是将其公开于 网上，顿时一石激起千层浪，经过有关部门的介入，问题最终水落石出，这是公民通过________行使自己的监督权。 [ ]

A．民主评议会

B．信访举报制度

C．舆论监督制度

D．社情民意反映制度