They discovered a large collection of old pots _______ Qin Dynasty, which are still _______ today.

A．dates from; very valuable

B．dating back to; of great value

C．dated back to; of much value

D．dating from; very value

随着微博、微信等的广泛使用，公民的意见表达和利益诉求日益快速、便捷和多样化。面对“微时代”政治生态发生的巨大变迁，中 * * 党作为执政党必须

①改进党的作风，坚持依法行政

②引导社会舆论，履行国家管理职能

③改善执政方式，提升执政能力和水平

④关注民生民意，更好地实现党的宗旨

A．①③

B．①④

C．②④

D．③④