In every cultivatedlanguages there are two great classes of words which taken together,comprisethe whole vocabulary.First,there are those words_________(51)which we

become acquainted indaily conversation,which we learn,that is to say,from the_________(52)of ourown family and from our familiar associates,and which we should know

and use_________(53)wecould not read or write.They__________(54)the common things of life,and are thestock in trade of all who use the language.Such words may be

called"popular",sincethey belong to the people___________ (55)and are not the exclusive_______(56)ofa limited class. On the other hand,our language ___________(57)a

multitude of wordswhich are comparatively_________(58)used in ordinary conversation.Theirmeanings are known to every educated person,but there is little_________(59)

to use them at homeor in the market-place. Our________ (60) acquaintance with them comes not fromour mother's________(61)or from the talk of our

schoolmates,________(62)frombooks that we read,lectures that we_________(63),or the more formalconversation of highly educated speakers who are discussing some

particular topic ina style appropriately elevated above the habitual ________(64)of everydaylife.Such words are called "learned" ,and the________(65)between themand the

"popular"words is of great importance to a right understanding of linguistic process.

_________(54)

A.concern

B.mind

C.care

D.involve