【正确答案】Since the Great Depression of the 1930s, governments have actively pursued the goal of economic stability at full employment. Known as internal balance, this objective has two dimensions; (D a fully employed economy, and ?no inflation—or, more realistically, a reasonable amount of inflation. Nations traditionally have considered internal balance to be of primary importance and have formulated economic policies to attain this goal. 　　Policy makers are also aware of a nation’s balance-of-payments (BOP) position. A nation is said to be an in external balance when it realizes neither BOP deficits nor BOP surpluses. In practice, policy makers usually express external balance in terms of a BOP sub account, such as the current account. In this context, external balance occurs when the current account is neither so deeply in deficit that the home nation is incapable of repaying its foreign debts in the future nor so strongly in surplus that foreign nations cannot repay their debts to it. Although nations usually consider internal balance to be the highest priority, they are sometimes forced to modify priority when confronted with large and persistent external imbalances.