2. 外语
  3. From childhood to old age, we all use language as a means of broadening our knowledge of ourselves and the world about us. When

From childhood to old age, we all use language as a means of broadening our knowledge of ourselves and the world about us. When

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问题       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【C1】______  they were like newborn children, unable to use this 【C2】______  tool. Yet once language developed, the possibilities for human kinds’ future 【C3】______  and culture growth increased.
     Many linguists believe that evolution is 【C4】______  for our ability to produce and use language. They 【C5】______  that our highly evolved brain provides us 【C6】______  innate language ability not found in lower 【C7】______  . Proponents of this innateness theory say that our 【C8】______  for language is inborn, but that language itself develops gradually, 【C9】______  a function of the growth of the brain during childhood. Therefore there are critical 【C10】______  times for language development.
      Current 【C11】______  of innateness theory are mixed, however, evidence supporting the existence of some innate abilities is undeniable. 【C12】______  more and more schools arc discovering that foreign languages are best taught in 【C13】______  grades. Young children often can learn several languages by being 【C14】______  to them, while adults have a much harder time learning another language once the 【C15】______  of their first language have been firmly fixed.
     【C16】______  some aspects of language are undeniably innate, language does not develop automatically in a vacuum.  Children who have been 【C17】______  from other human beings do not possess language. This demonstrates that 【C18】______  with other human beings unnecessary for proper language developments.  Some linguists believe that this is even more basic to human language 【C19】______  than any innate capacities. These theories view language as imitative, learned behavior. 【C20】______  , 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.
【C9】
选项 A、unlike
B、like
C、just as
D、as
答案D
解析 介词词义题。句意为：语言本身作为儿童时期大脑发育的一项功能，是逐步发展的。结合句意，填入的介词应含有“当作，作为”之意，故D 符合文意。
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