单项选择题
A.expensive... solution B.effective ... panacea C.ignored... salve D.relevant ... prerequisite E.calamitous... fillip
A.readdress... mercurial B.posit ... duplicitous C.maintain... rational D.absorb... Jovian E.hold... purist
A.idiosyncratic B.humanistic C.irrelevant D.personal E.pragmatic