单项选择题
A. emphasize the differences between economic growth and scarcity B. ignore the human creative and productive power C. see ecology from an economic perspective D. use different approaches to economy and ecology
A. Extensive communications. B. Language development. C. Close cooperation. D. Direct interactions.
A. the development of medical technology B. the radical change of our lifestyle C. the decreasing birth rate of human society D. the independence of the female gender