NO.PZ2023071902000017
问题如下：
QuestionFour countries are part of a customs union. One country suggests
transitioning to a common market structure. What additional level of
economic integration between the countries is most likely to occur if
this change takes place? They would:
选项：
A.Allow the free flow of factors of production.
Establish the same economic system and coordinate economic policies.
解释：
Solution
Correct. A common market structure encompasses all aspects of the customs union and goes further by permitting the free movement of factors of production among member countries.
Incorrect. This level of economic integration is characteristic of an economic union, not a common market structure.
Incorrect. A customs union already includes common trade barriers against non-members.
• explain motivations for and advantages of trading blocs, common markets, and economic unions
A正确。共同市场结构包括关税同盟的所有方面，并进一步允许生产要素在成员国之间自由流动。
B不正确。这种程度的经济一体化是经济联盟的特征，而不是共同的市场结构。
C不正确。关税同盟已经包含了针对非成员国的共同贸易壁垒。
我记得这题常考的选项是labor来着?
