为破解漫画《砸不开》反映的经济困境，政府应

①深化收入分配改革，实现城乡居民收入稳定增长   

②积极稳妥推进城镇化，着力提高城镇化质量

③统筹推进城乡基本医疗和社会保障体系建设   

④规范市场秩序，保持物价总水平不变

A．①③

B．②③

C．②④

D．③④

He is rather difficult to make friends with, but his friendship, ____, is more true than any other.

A．once gained

B．when to gain

C．after is gained

D．while gaining