About The language of negotiation, you not only have to grap the lanuage of refusing and accepting, but also know how to make a proposal.

中国大学MOOC: About The language of negotiation, you not only have to grap the lanuage of refusing and accepting, but also know how to make a proposal.

在执行递归过程时，通常使用的数据结构是______。 A: 堆栈(stac B: 队列(queu C: 图(grap D: 树(tre