单项选择题

In every cultivated language there are two great classes of words which, taken together, comprises the whole vocabulary. First, there are those words (76) which we become acquainted in daily conversation, which we learn, that is to say, from the (77) of our own family and from our familiar associates, and which we should know and use (78) we could not read or write. They concern the common things of life, and are the stock in trade of all who (79) the language. Such words may be called "popular", since they belong to the people at large and are not the exclusive possession of a limited class.
On the other hand, our language comprises a multitude of words which are comparatively (80) used in ordinary conversation. Their meanings are known to every educated person, but there is little (81) to use them at home or in the market place. Our first acquaintance with them comes not from our mother’s (82) or from the talk of our school mates, (83) from books that we read, lectures that we attend, or the more formal conversation of highly educated speakers who are discussing some particular (84) in style appropriately elevated above the habitual extent of everyday life. Such words are called "learned", and the (85) between them and the "popular" words is of great importance to a right understanding of linguistic process.

84().

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