20.答案B

　　【解析】spend (in) doing sth.是固定搭配。

　　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 __5__ we could not read or write.

　　They __6__ the common things of life, and are the stock in trade of all who __7__ the language.

　　Such words may be called“popular”, since they belong to the people __8__ and are not the exclusive __9__ of a limited class.

　　On the other hand, our language __10__ a multitude of words which are comparatively __11__ used in ordinary conversation.

　　Their meanings are known to every educated person, but there is little __12__ to use them at home or in the market-place.

　　Our __13__ acquaintance with them comes not from our mother's __14__ or from the talk of our school-mates, __15__ from books that we read, lectures that we __16__ ,

　　or the more __17__ conversation of highly educated speakers who are discussing some particular __18__ in a style appropriately elevated above the habitual __19__ of everyday life.

　　Such words are called“learned”, and the __20__ between them and the“popular”words is of great importance to a right understanding of linguistic process.

　　1.A.at B.with C.by D.through

　　2.A.study B.imitate C.stimulate D.learn

　　3.A.mates B.relatives C.members D.fellows

　　4.A.which B.that C.those D.ones

　　5.A.even B.despite C.even if D.in spite of

　　6.A.mind B.concern C.care D.involve

　　7.A.hire B.apply C.adopt D.use

　　8.A.in public B.at most C.at large D.at best

　　9.A.right B.privilege C.share D.possession

　　10.A.consists B.comprises C.constitutes D.composes

　　11.A.seldom B.much C.never D.often

　　12.A.prospect B.way C.reason D.necessity

　　13.A.primary B.first C.principal D.prior

　　14.A.tips B.mouth C.lips D.tongue

　　15.A.besides B.and C.or D.but

　　16.A.hear of B.attend C.hear from D.listen

　　17.A.former B.formula C.formal D.formative

　　18.A.theme B.topic C.idea D.point

　　19.A.border B.link C.degree D.extent

　　20.A.diversion B.distinction C.diversity D.similarity

　　1.答案B

　　【解析】本句中由with which引導的定語從句，修飾先行詞those words。短語become acquainted with sb./sth.意為“認識某人，了解某事。”