One of the characteristics that have made Mark Twain a major literary figure in the 19th century America is his use of ______.

单项选择题linguists give priority to the spoken language not the written language because ______.

单项选择题A linguist regards the changes in language and language use as ______.

单项选择题Emerson based his religion on an intuitive belief in an ultimate unity, which he called ______.

单项选择题Which of the following sounds is a voiceless bilabial stop

单项选择题According to the law, children in Britain between the ages of should receive efficient fulltime education.