美国财政部拍卖四周期国债，得标利率4.240%（4月24日报4.220%），投标倍数2.74（前次为2.90）。拍卖八周期国债，得标利率4.220%（4月24日报4.225%），投标倍数3.28（前次为3.01）。

Group 1 - The U.S. Treasury conducted auctions for both four-week and eight-week Treasury bills, with the four-week bill yielding a bid rate of 4.240%, an increase from the previous rate of 4.220% reported on April 24 [1] - The bid-to-cover ratio for the four-week bill was 2.74, down from the previous ratio of 2.90, indicating a decrease in demand [1] - The eight-week bill had a bid rate of 4.220%, slightly lower than the previous rate of 4.225% reported on April 24 [1] Group 2 - The bid-to-cover ratio for the eight-week bill was 3.28, an increase from the previous ratio of 3.01, suggesting stronger demand compared to the last auction [1]