In every cultivated language, there are two great classes of words which, taken together, comprise the whole vocabulary. First, there are those words (1) which we become acquainted in daily conversation, which we (2) , that is to say, from the (3) of our own family and from our familiar associates, and (4) we should know and use even if we could not read or write. They (5) the common things of life, and are the stock in trade of all who (6) the language. (7) words may be called "popular", since they belong to the people at large and are not the exclusive (8) of a limited class. On the other hand, our language (9) a multitude of words which are comparatively (10) used in ordinary conversation. Their meanings are known to every (11) person, but there is little (12) to use them at home or in the marketplace. Our (13) acquaintance with them comes not from our
A. border
B. link
C. degree
D. extent
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