单项选择题 No other artist rewards the viewer with more sheer pleasure than Mir6; he is one of those blessed artists who combine profundity and ______.

单项选择题 Aimed at curbing European attempts to seize territory in the Americas, the Monroe Doctrine was a warning to ______ foreign powers.

单项选择题 Some Central Intelligence Agency officers have ______ their previous statements denying any involvement on their part with the Contra aid network and are now revising their earlier testimony.