完形填空
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【A1】______, they were like newborn children, unable to use this【A2】______ tool. Yet once language developed, the possibilities for mankind future【A3】______ and cultural growth increased.
Many linguists believe that evolution is【A4】______ for our ability to produce mid use language. They【A5】______ that our highly evolved brain provides us【A6】______ innate language ability not found in. lower 【A7】______. Proponents of this innateness theory say that our【A8】______ for language is inborn, but that language itself develops gradually, 【A9】______ a function of the growth of the brain during childhood. Therefore there are critical 【A10】______ times for language development.
Current 【A11】______ of innateness theory are mixed. However, evidence supporting the existence of some innate abilities is undeniable. 【A12】______ more and more schools are discovering that foreign languages are best taught in 【A13】______ grades. Young children often can learn several languages by being 【A14】______ to them, while adults have a much harder time learning another language once the 【A15】______ their first language have become firmly fixed.
【A16】______ some aspects of language are undeniably innate, language does not develop automatically in a vacuum. Children who have been【A17】______ from other human beings do not possess language. This demonstrates that【A18】______ with other human beings is necessary for proper language development. Some linguists believe that this is even more basic to human language【A19】______ than any innate capacities. These theorists view language as imitative, learned behavior. 【A20】______, children learn languages from their parents by imitating them. Parents gradually shape their children’s language skill by positively reinforcing precise imitations and negatively reinforcing imprecise ones.
【答案解析】该句中的“this”和“even more basic”分别指代上句的“interaction with other human beings”和“necessary”。此处所填的内容对应上文中的language development, 即language acquisition语言习得。 appreciation欣赏; 感激。 requirement要求。 alternative转移, 转变。
单选题
【A20】______
【正确答案】
C
【答案解析】该句是对前文中“imitative, learned behavior”的另一种解释, 因此应用“换言之”来引领证据。 in other word换言之。 as a result结果是。 after all毕竟。 above all首先。