单项选择题
A.petrified: forest B.alloyed: metal C.ragged: clothing D.speckled: egg E.spavined: insect
A.vent: respiratory B.circumscribe: visible C.brook: unique D.penetrate: permeable E. muster: tenacious
A.a bibulous B.an incipient C.a subtle D.a tasteless E. a querulous