建设一个和谐繁荣的社会一直以来都是人类的理想和追求。但事实上，人类文明通常都充满冲突和敌对。所以，全球化和一体化进程中的各种争端和中国社会转型中的诸多矛盾都是需要建设一个和谐社会。这种和谐社会的想法不仅仅是一个中国式的概念，而重要的是，它是一个世界范围的理想。它是一个中国的追求，更是一个世界的共同愿望。

A. A question followed by a list of possible answers to the question.
B. A generalization followed by specific instances as its illustration.
C. An argument followed by a refutation.
D. A formulation followed by evidence in support of it.

A. To get a survival advantage over other plants.
B. To trick animals into visiting them.
C. To enhance their chances of survival.
D. To produce more descendants.