46. Which of the following could be the best title for this passage?(A) Changing human rights.(B) Our changing language.(C) The invention of computer.(D) The history of human language.

47. In the passage, the author used “senior citizens” & “physicallychallenged” to _____.(A) illustrate changes in attitude resulted in changes in language(B) request people not to ignore older and disabled people(C) indicate the necessity of inventing new language(D) show positive feelings about older people