27. (A) inappropriate (B) indescribable (C) indignant (D) indefinite

37. According to the passage, which of the following is NOT true? (A) Some endangered languages vanish in an instant, while others are lost gradually. (B) The dominance of English threatens the survival of indigenous languages. (C) Nearly one language is out of use in around half a month. (D) Eastern tribes introduced forty native languages to Oklahoma.