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 cultural growth in- creased.
   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】______ an 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. There- fore 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 are 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 become 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 is necessary for proper language development. Some linguists believe that this is even more basic to human language 【C19】______ than any innate capacities. These theorists 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.
【C20】
选项 A、As a result
B、After all
C、In other words
D、Above all
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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