_____ that the government can lead them out of the financial crisis, people are optimistic about the

future of the country.[ ]

A. Convincing

B. Convinced  

C. To convince      

D. Having convinced

阑尾易于发生坏死的解剖因素是（）

A.阑尾腔狭细

B.阑尾为盲端器官

C.阑尾动脉是无侧支终末血管

D.阑尾腔内细菌含量大

E.阑尾扭曲