Q. Which President, while living in the White House,regularly skinny-dipped in the Potomac River?
哪个总统住在白宫期间，定期在白宫边的波托马可河里裸泳？
A. Between 1825 and 1829 there was a "moon" on the Potomacaround 5 a.m., when John Quincy Adams stripped down and took hismorning constitutional。
答案：约翰·Q·亚当斯。(美国第6任总统，1825-1829年在任)
在他任期内的1825-1829年间，早上五点左右，他会脱掉衣服，光着屁股在波托马可河里进行他的晨泳。