74. The underlined expression“on the cutting edge”in paragraph 5 means“on the most ______ position"． (A) important (B) favourable (C) astonishing (D) advanced

70. What leads the writer to write this article? (A) Parents want to know how to educate their children. (B) He wants to share his good ideas about money matters. (C) He thinks money management the most important for children. (D) Parents care little about their children's management of money.