1. From the point of view of international economics, the basic unit or subject of economic activity is the A ． B．Individuals B．Enterprises C．Groups D． D．State

From the point of view of international economics, the basic unit of economic activity or the subject of behavior is A ． B．Individuals B．Enterprises C．Groups D． C．Groups D．

Answer: traditional international economics, such as comparative advantage, factor endowment theory at that time, the main body is D; now international economics is very chaotic, especially after the 21st century, the emergence of the theory of heterogeneous enterprises, the main body of the study of the tendency to shift to the enterprise