总公司为了各有效对分公司的网络路由进行规划及管理，采用BGP协议，进行选路规划，体现公司的选路规则及备份链路，有效的避免了网络故障而导致的断网问题。在前缀数量很大的前...

English has become more and more important in the world, and as a result, studies of English learning and teaching have become an important field for researchers. Besides the learning progress, researchers also focus on learners’ individua...