【正确答案】正确答案：Three points of the Prague School theory are of special importance. First, it was stressed that the synchronic study of language is fully justified as it can draw on complete and controllable material for investigation. Second, there was an emphasis on the systemic character of language. Third, language was looked on as functional in another sense. Based on these ideas, the Prague School practiced a special style of synchronic linguistics, and made great contribution to phonology and the distinction between phonetics and phonology. Its most important contribution is that it sees language in terms of function.