Age is not the learner factor that has been an issue in second language acquisition research.()

判断题Acreole is a mixed language which has become the mother tongue of a speech community.()

判断题The term geographical dialect is used for less drastic difference which is restricted to variation in pronunciation.()

判断题Acronyms and abbreviations are formed by putting together the initial letters of some or all words in a phrase or title.()

判断题Sounds are said to be in contrastive distribution if they appear in the same environment.()

判断题Words and phrases like now, yesterday, next week, in three day, etc. are called discourse deixis.()