Question: 美元什么时候没有黄金的支持
Answer: 1971; 1971; 1971-08-15; 15 08 1971; 1971 august, 15; 15-08-1971; 08 15 1971; 1971-08-15; 15 8月 1971; 1971 08 15; 15/08/1971; 08/15/1971; 08-15-1971; 1971 8月 15