英语语法分析

D. Abandoned unilateralism (The correct answer is a).

放弃单边主义(正确答案是A)。

I believe that unilateralism is too expensive and open dialogue is too slow.

我认为单边主义代价太高，公开对话效率太低。

Bush's naive idealism and unilateralism encouraged Obama's realism and multilateralism.

老布什天真的理想主义和单边主义激发了奥巴马的务实主义和多边主义。