改进题：It is not surprising, then,that the world saw a return to a

改进题：It is not surprising, then,that the world saw a return to a floating exchange rate system. Central banks were no longer required to support their own currencies.

译文：在这种情况下，全世界又恢复了浮动交换率，这已不足为奇了，因此各国中央银行也就无需维持本币价格了。
【正确答案】：改进的译文：在这种情况下，世界各国又恢复浮动汇率就不足为奇了。各国中央银行也就无须维持本币的汇价了。
【题目解析】：p19