70. In what ways does the author mention in helping solve the hunger problem in America?
举一反三
- What can solve America’s problem of trade imbalance according to economists
- What does the author say is the problem with women?
- 1. What effective ways of learning a new language does the TED video mention？
- What does the author mention as a cause of changes in the role of child in the United States
- According to the author, what problem does he find in life?