【正确答案】正确答案：To see the role linguistics plays in social and economic development, we could specifically consider the integration of linguistic research with other fields of social life, such as computational linguistics, psycholinguistics, applied linguistics, anthropological linguistics. As to the applied linguistics, it is undeniable that linguistic research has greatly influenced the language teaching and learning. For example, various linguistic schools have shed insight into the methodology of language teaching, especially foreign language teaching. Those different models of language teaching are all aimed at a more successful and effective language teaching. As is known, for a human being in the society, communication is very important. In the social communication, linguistic research also made some important interpretations and explanations. Such as Grice's Cooperative Principle, Brown& Levinson's face and politeness theory, etc, those theories have good inspirations as to how to create a successful communication, and how to avoid and deal with miscommunication In a word, although without linguistic research society and economics could still develop in their own way, yet linguistics with its effort to explain what is the nature of the activities concerning language, and how these activities works, has undoubtedly made it easier for the social and economic development.