单项选择题
A．geyser: spring B．burrow: cavern C．peninsula: estuary D．archipelago: island E．ridge: furrow
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