单选题 The agreements that were reached at the Bretton Woods conference in 1944 established a system______.

A、 of essentially fixed exchange rates under which each country agreed to intervene in the foreign exchange market when necessary to maintain the agreed-upon value of its currency
B、 of floating exchange rates determined by the supply and demand of one nation"s currency relative to the currency of other nations
C、 that prohibited governments from intervening in the foreign exchange markets
D、 in which the values of currencies were fixed in terms of a specific number of ounces of gold, which in turn determined their values in international trading

【正确答案】 A

【答案解析】[解析] 在1944年的布雷顿森林会议上达成协议，建立了布雷顿森林体系，布雷顿森林体系是以美元和黄金为基础的金汇兑本位制。其实质是建立一种以美元为中心的国际货币体系，基本内容包括美元与黄金挂钩、其他国家的货币与美元挂钩以及实行固定汇率制度。A项大意为每个国家同意必要时保持商定的货币价值在货币市场上进行干预的固定货币制度，B项大意为一国货币供应量相对于其他国家对该国的货币需求量决定的浮动货币制度，C项大意为禁止政府干预外汇市场，D项大意为货币的价值固定在特定盎司数量的黄金上，从而在国际贸易中决定货币的价值。