An action that is lavishly rewarded as soon as it is performed is well on its way to becoming a habit.

单项选择题General George Washington and his hungry, raggedtroops crossed the Delaware River from Pennsylvania, surprised the garrison of German mercenaries in Trenton, and captured the city.

单项选择题By 1916 Canada had played a respectable role on the world stage, a role that would soon help undoits colonial status.