Questions 17 ～ 20 are based on the following talk about the global economy from 1973 to 1990s. You now have 20 seconds to rend Questions 17 ～ 20. Which of the following is NOT mentioned as the characteristic of the global economy in 1990s A: Transnational corporations were placed wherever worth it. B: Large sum of money was invested in tourism. C: Manufacturing plants went to countries with large (:heap labor forces. D: Large regional trading blocs were emerging.