Concerned about the dangerous global imbalances represented by america ' s ballooning current - account deficit , rodrigo de rato , head of the international monetary fund ( imf ) , has also pressed for more flexibility on the yuan 对美国严重的经常账户赤字导致的全球收支不平衡的关注,使国际货币基金会总裁罗德里戈?拉托也要求人民币更有弹性。