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 isnecessary 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 lang uage 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
1.答案B
【解析】此处意为：当人类刚刚开始进化，他们如同新生儿一样不会运用语言这种工具。
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。
2.答案A
【解析】根据语法分析，答案应用来修饰语言的。valuable珍贵的;appropriate合适的，适当的;convenient方便的，便利的;favorite最喜欢的。语言并不是人类选择的结果，而是人类在进化过程中慢慢发展起来的，对人类来说，应当是珍贵的。
3.答案A
【解析】此处意思是：语言的发展增加了人类未来的成就和文化进步的可能性。attainments成就;feasibility可行性;entertainments娱乐;evolution进化。
