49.According to the text, Jeffers is probably _______. (A) a computer programmer (B) a test subject (C) a human brain expert (D) a medical doctor

55. According to Paragraph 4, what’s Jovce’s opinion about life in 1900? (A) There were fewer problems for the family (B) Life was simpler but worse than it is now (C) There were things she liked and disliked (D) The family had more time to stay together