The highest form of economic integration is called the economic union which is characterized by integration of the domestic policies of its members in respect of economy, finance, etc. in addition to absence of trade barriers, practice of common external policy and free production factor mobility. The members of an economic union are required not only to harmonize their taxation, government expenditures, industry policies, etc., but also use the same currency.
【正确答案】：一体化程度最高的是经济联盟。其成员不仅清除贸易壁垒，实行统一的对外经贸政策，实现生产要素自由流动，而且统一协调各国在经济、金融等领域的国内政策。经济联盟的成员不仅要在税收、政府开支、产业政策等方面保持一致，而且还要使用同一的货币。
【题目解析】：该题目素材选自L3。该题目中除了考察多个商务英语术语之外，难点在于个别表达的理解。is characterized by“以......为特点” 。in addition to由于下文的紧密联系翻译为“不仅”而不是“除......之外”，这样更为言简意赅，关系明确。absence和practice两个词在翻译的时候按照中文表达需要在句子中的成分上做了转换，由名词转为动词。
