Every summer in Australiathere is the danger of bush fires．Longperiods of hot dry weather cause the grass and trees to become highlyinflammable(易燃的)．Aswell as the dryness and high temperature, an important factor is the greatamount of oil in the leaves of such trees as eucalyptus(桉树类) and gum trees．Firesstart very easily, often spontaneously, but usually because of a carelesslythrown cigarette or match．Ifthere is a high wind, the ample supply of air fans the flames into an inferno．The radiant heat vaporizes(使蒸发) the oil in the leaves, and the fire travelsvery quickly, sometimes overtakes fleeing ears and burns passengers to death. Great fires often occuraround Christmas, in areas near big cities, causing great loss of life andproperty.“Inferno”in paragraph 1 means ________.
A.hellB.place of great heat and fireC.furnace for smelting ironD.fireball在线课程B