美国财政部拍卖四个月期国债，得标利率4.2%（4月30日报4.190%），投标倍数3.02（前次为3.08）。

Group 1 - The U.S. Treasury auctioned a four-month Treasury bill with a winning yield of 4.2%, compared to 4.190% reported on April 30 [1] - The bid-to-cover ratio was 3.02, slightly down from the previous auction's ratio of 3.08 [1]