巴黎公社的实践为我们的社会主义建设留下的宝贵经验主要有

①无产阶级革命原则 ②无产阶级专政原则 ③人民公仆原则 ④工农 联盟原则 [ ]

A．①②③④  

B．①②④

C．①③④  

D．①②③

He failed to carry out some of the provisions of the contract, and now he has to ______ the consequences.

A．answer for

B．run into

C．abide by

D．step into