单项选择题Britain's longest rivers are ______.
单项选择题______ is the branch of linguistics that deals with the origin and historical development of a linguistic form.
单项选择题______ is a philosophic and literary movement that flourished in New England, as a reaction against rationalism and Calvinism.
单项选择题A Tale of Two Cities was written by ______.
单项选择题A linguistic ______ refers to a word or expression that is prohibited by the polite society from general use.