International trade practice is a discipline which mainly studies the specific process of international trade of () and the related activities and business action norms.
A. goods
B. technology
C. service
D. the above three
According to the United Nations Convention on Contracts for the international sale of goods, the criterion for determining the "internationality" of goods transactions means().
A. the buyer and the seller have different places of business in different countries
B. the buyer and the seller have different nationalities
C. the act of concluding a contract is completed in different countries
D. the goods must be transported from one country to another