ItwasafreezingcoldeveninginnorthernVirginiamanyyearsago...
問題詳情：ItwasafreezingcoldeveninginnorthernVirginiamanyyearsago.Anoldmanwaswaitingfora 41 acrosstheriver.Atlastheheardsomehooves42alongthefrozenpath.Anxiously,hewatchedasseveralhorsemencamea...