单项选择题 There are few precious constants in the story of the yen-for a start, it is among the monies of the world, being not much more than a century old.（）

单项选择题 The works of Baudrillard are filled with seemingly（）but truly vacuous references to relativity, quantum mechanics, and chaos theory, which the more（）physicist will disregard.

单项选择题 The experience of dealing with a clamorous band of younger siblings, earning their affection while holding them to their tasks, can prove remarkably（）in later years when one deals with（）colleagues jealous of their prerogatives.