The distinctive features of a speech variety may be all the following EXCEPT________.

单项选择题The President during the American Civil War was______.

单项选择题Which of the following is NOT a romantic poet

单项选择题________ refers to the study of the internal structure of words and the rules of word formation.

单项选择题What essentially distinguishes semantics and pragmatics is the notion of______.

单项选择题The Prime Minister in Britain is head of______.