单项选择题
A.dilatory;futile B.methodical ; difficult C.efficient ; dangerous D.malingering; antithetical E.repugnant ;obtuse
A.satisfiedly; admits B.convivially;assumes C.fitfully; allows D.contentedly; rejects E.sporadically;entails
A.obstinate ; infuriate B.obedient ; refute C.refractory ; provoke D.intractable ; remonstrate E.bizarre ; palliate