一栋建筑物的主要设计内容有：建筑平面设计、建筑立面设计、建筑剖面设计以及建筑物的结构设计和基础设计。（）

听句子，缩写原文。（）

A．He finished the negotiation in three days.

B．He was on a business trip ten days ago.

C．His toughness cost him three more days.

D．His business trip lasted thirteen days.