原文： 为了推动中美关系的发展，中国需要进一步了解美国，美国也需要进一步了解中国。 译文： A.To promote China-US relations, China needs to know the US better and vice versa. B.To promote the development of China-US relations, China needs to know the US better and the US also needs to know China better.

A.To
B.To