In every cultivated language there are two great classes of words. They, taken together,【C

1】______the whole vocabulary. First, there are those words【C2】______which we become familiar in ordinary conversation, which, we learn,【C3】______is to say, from the members of our own family and from our friends, and which we should know and use【C4】______we could not road or write. They .【C5】______the common things of life, and are the stock in trade of【C6】______who speak the language. Such words may be called "popular", since they belong to the people【C7】______and are not the【C8】______of a limited class only.

On the other hand, our language includes a large number of words which are【C9】______seldom used in ordinary conversation. Their meanings are known to every【C10】______person, but there is little【C11】______to use them at home. Our first【C12】______with them comes not from our mother's lips or from the talk of our classmates,【C13】______from books that we read, lectures that we hear, or the more formal conversation of【C14】______educated speakers who are discussing some particular topic in an elevated【C15】______. Such words are called "learned", and the difference between them and "popular" words is【C16】______great importance to a right understanding of language. We may【C17】______a girl as "lively" or as "vivacious. "In the first【C18】______, we are using a native English word【C19】______from the familiar noun "life". In the【C20】______, we are using a Latin derivative which has exactly the same meaning.

【C1】

A．bring up

B．make up

C．take up

D．put up