相互了解，是发展国与国之间关系的前提。唯有相互了解，才能增进信任，加强合作。

A.Mutual understanding is the basis for state-to-state relations. Only with mutual understan
B.Mutual understanding is the basis for state-to-state relations. Without it, it would be im
C.Mutual understanding is the basis for state-to-state relations, without it, it would be im
D.Mutual understanding is the basis for state-to-state relations, only with mutual understan