The UN should﹍﹍the establishment of Iraqi government after the war, I think.

A．take part in

B．play a leading role in

C．play a role among

D．play a important part for

特大型建设项目的区域和宏观经济影响分析的原则有（）。

A.系统性原则

B.综合性原则

C.定量分析原则

D.客观性原则

E.真实性原则