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剑桥——
欧元区预期将在2010年迎来的经济复苏，可能会伴随有新的紧张状况。事实上，在极端情况下，某些国家甚至会发现自己正在考虑这样一个问题：是否应从这种单一货币体系中一走了之？
尽管欧元简化了贸易，但它却给货币政策带来了巨大的问题。甚至早在欧元问世之前，（包括本人在内的）一部分经济学家就曾提出过这样的质疑：对于这种各成员国状况有着千差万别的群体而言，单一货币是否值得追求。单一货币意味着单一货币政策与单一利率，即便当欧洲经济与货币联盟各成员国之间的经济状况有着巨大差别（尤其是当遭遇经济周期）之时，政策仍将一视同仁。
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