We were aware that, _____, the situation will get worse.

A．if not dealing with carefully

B．if dealt not carefully with

C．if not carefully dealt with

D．if not carefully dealing with

休克是一个由多种病因引起、但最终共同以有效循环血容量减少、组织灌注不足，细胞代谢紊乱和功能受损为主要病理生理改变的综合征。()