单选题 In every cultivated language there are two great classes of words which, taken together, comprises the whole vocabulary. First, there are those words 1 which we become acquainted in daily conversation, which we learn, that is to say, from the 2 of our own family and from our familiar associates, and which we should know and use 3 we could not read or write. They concern the common things of life, and are the stock in trade of all who 4 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, ore" language comprises a multitude of words which are comparatively 5 used in ordinary conversation. Their meanings are known to every educated person, but there is little 6 to use them at home or in the market place. Our first acquaintance with them comes not from our mother" s 7 or from the talk of our school mates, 8 from books that we read, lectures that we attend, or the more formal conversation of highly educated speakers who are discussing some particular 9 in style appropriately elevated above the habitual extent of everyday life. Such words are called "learned", and the 10 between them and the "popular" words is of great importance to a right understanding of linguistic process.