By ______ we mean there is no logical connection between meanings and sounds

单项选择题The climate of Britain may be generalized as ______.

单项选择题The American Civil War broke out in ______.

单项选择题Linguistics use ______ to refer to the abstract linguistic system shared by the members of a speech community.

单项选择题The colony Virginia was named after ______.

单项选择题Who was the leader of Federalists in the early history of United States