In order to put an end to poverty, the World Bank has switched its ______to providing technical assistance and long-term loans to developing countries.

A．concern

B．process

C．struggle

D．focus

表现为与语言、声音、呼吸关系最为密切的是（）。

A.元气

B.肺气

C.宗气

D.中气

E.心气