[填空题]
From the child to old age, we all use language as a means of
{{U}} (36) {{/U}}our knowledge of ourselves and the world around us.
When humans first {{U}} (37) {{/U}}, they were like newborn children,
unable to use this valuable tool. Yet once language developed, the {{U}} (38)
{{/U}} for human’s kind’s future attainment and cultural growth
increased.
Many linguists believe that evolution is
{{U}} (39) {{/U}} for our ability to produce and use language. They
{{U}} (40) {{/U}} that our high evolved brain provides us with an innate
language ability not found in lower organism. Proponents of this innateness
theory say that our potential for language is {{U}} (41) {{/U}}, but that
language itself develops {{U}} (42) {{/U}}, as a function of the growth
of the brain during childhood. Therefore there are critical biological times for
language development.
Current reviews of innateness theory are
mixed, however, evidence supporti