Directions: Decide which of the choices given below would best complete the passage if inserted in the corresponding blanks. Mark the best choice for each blank on ANSWER SHEET.
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 【A11】______, they were like new born children, 【A12】______ to use this valuable tool. Yet once language developed, the possibilities for human kind’s future 【A13】______ and cultural growth increased.
Many linguists believe that evolution is 【A14】______ for our ability to produce and use language. They 【A15】______ that our highly evolved brain provides us 【A16】______ an innate language ability not found in lower 【A17】______. Proponents of this innateness theory say that our 【A18】______ for language is inborn, but that language itself develops gradually,【A19】______ a function of the growth of the brain during childhood. 【A20】______ there are critical biological times for language development.