From childhood to old age, we all use language as a means of broadening our knowledge of ourselves and the world about us. When humans first 1 , they were like newborn children, unable to use this 2 tool. Yet once language developed, the possibilities for human kind‘s future 3 and cultural growth increased.

Many linguists believe that evolution is 4 for our ability to produce and use language. They 5 that our highly evolved brain provides us 6 an innate language ability not found in lower 7 . Proponents of this innateness theory say that our 8 for language is inborn, but that language itself develops gradually, 9 a function of the growth of the brain during childhood. Therefore there are critical 10 times for language development.

Current 11 of innateness theory are mixed, however, evidence supporting the existence of some innate abilities is undeniable. 12 , more and more schools are discovering that foreign languages are best taught in 13 grades. Young children often can learn several languages by being 14 to them, while adults have a much harder time learning another language once the 15 of their first language have become firmly fixed.

16 some aspects of language are undeniably innate, language does not develop automatically in a vacuum. Children who have been 17 from other human beings do not possess language. This demonstrates that 18 with other human beings is necessary for proper language development. Some linguists believe that this is even more basic to human language 19 than any innate capacities. These theorists view language as imitative, learned behavior. 20 , children learn language from their parents by imitating them. Parents gradually shape their child's language skills by positively reinforcing precise imitations and negatively reinforcing imprecise ones.

1.A.generated B.evolved C.born D.originated
2.A.valuable B.appropriate C.convenient D.favorite
3.A.attainments B.feasibility C.entertainments D.evolution
4.A.essential B.available C.reliable D.responsible
5.A.confirm B.inform C.claim D.convince
6.A.for B.from C.of D.with
7.A.organizations B.organisms C.humans D.children
8.A.potential B.performance C.preference D.passion
9.A.as B.just as C.like D.unlike
10.A.ideological B.biological C.social D.psychological
11.A.reviews B.reference C.reaction D.recommendation
12.A.In a word B.In a sense C.Indeed D.In other words
13.A.various B.different C.the higher D.the lower
14.A.revealed B.exposed C.engaged D.involved
15.A.regulations B.formations C.rules D.constitutions
16.A.Although B.Whether C.Since D.When
17.A.distinguished B.different C.protected D.isolated
18.A.exposition B.comparison C.contrast D.interaction
19.A.acquisition B.appreciation C.requirement D.alternative
20.A.As a result B.After all C.In other words D.Above all

evolved逐渐发展,进化符合题意。generated生殖,发展;born (bear的过去分词)不能作谓语动词;originated起源,不能用first修饰。
【解析】此处意为:许多语言学家认为进化使人们产生和具备了语言的能力。固定短语be responsible for对……负责,是……的原由。其它选项不与for搭配。
5.【答案】C【解析】根据语法分析,空格后应是一个宾语从句,而A,B,D三项后都不能接从句做直接宾语。confirm(确认)+名词;inform(通知)sb.of sth.;convince(使某人确信) sb.of sth.
6.【答案】D【解析】固定搭配provide sb.with sth.意为“向(人)提供(物)”
9.【答案】A【解析】此句句义是:语言本身作为童年时期大脑生长的一种功能,其发展是缓慢的。as (作为,当作)合乎题意。Like作为介词的意思是“像……一样”。
13.【答案】D【解析】此处意思是:越来越多的学校发现在什么年级学外语较容易,根据常识(低年级学外语较容易)以及后文的Young children often can learn several languages by being 14 to them, while adults…可以选定答案。
【解析】此处意为:通过接触多种语言,wyzfox.com好几种语言。be exposed to是固定搭配,接触到。reveal(显露)sth.to sb,不合题意,因本题中的them指languages。其余选项不与to搭配。engage in从事;be involved in参与。
18.【答案】D 【解析】此句总结前几句,意为:必须通过与他人交往,语言才能够发展。interaction相互作用;exposition暴露;comparison比较;contrast对比。
【解析】根据分析,本句中的“this”和“even more basic”分别指代上句的“interaction with other human beings”和“necessary”,wyzfox.com应上文中的language development。也就是说,language acquisition语言习得。appreciation欣赏,感激;requirement要求;alternative转移,转变,转换。
20.【答案】C【解析】本句功能是以另一种方式解释前文中的“imitative, learned behavior.(模仿性的后天行为)”。In other words换言之,换句话说;As a result结果是;After all毕竟;Above all首先。

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