The program that _______ at last meeting remains to be discussed before being put into action.

A．came up

B．came up with

C．put up with

D．turned up

某陈列馆举办“建国后农村生产关系变革”图片展。以下四幅图片所反映的生产关系变革中，哪些有利于生产力的发展？

①农民加入合作社
②人民公社食堂
③土地改革中农民在拔除
地主立的界碑
④农民领取生产承包合同