单项选择题
A.expensive… solution B.effective … panacea C.ignored… salve D.relevant … prerequisite E.calamitous … fillip
A.insoluble … solved B.nettlesome … faced C.winsome … ignored D.troublesome … categorized E. fulsome… persuaded
A.adversaries … laudatory B.counterparts … corrective C.protagonists … conciliatory D.functionaries … proper E.contemporaries … edified