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People often speak of fire as though it were a living creature--It grows, dances, needs oxygen, feeds on whatever it can find, a
People often speak of fire as though it were a living creature--It grows, dances, needs oxygen, feeds on whatever it can find, a
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2011-05-26
30
问题
People often speak of fire as though it were a living creature--It grows, dances, needs oxygen, feeds on whatever it can find, and then dies. And when a forest fire rages out of control, threatening human lives and homes, it must be fought like a "wild animal." The fight is often desperate, since firefighters’ best efforts may be dwarfed by the fury of a large fire. But the fire’s own traits can be used against it.
The heated air above a fire rises in a pillar of smoke and burnt gases, pulling fresh air in from the sides to replace it. Firefighters use this fact when they "fight fire with fire." They start a fire well in front of the one which they are fighting. Instead of traveling on in front of the huge fire, the smaller fire is pulled back toward it by the updrafts of the larger blaze. As it travels back to meet the large fire, the smaller backfire burns away the fuel that the forest fire needs to survive.
Even when a backfire has been well set, however, the fire may still win the struggle. The wind which the firefighters used to help them may now become their enemy. When the backfire meets the main fire, before both die for lack of fuel, there is tremendous flame, great heat and wild winds. A strong gust may blow the fire into the treetops beyond the area, giving the fire new fuel and a new life.
In the last paragraph, the writer again refers to the fire as a living creature by saying that it ______.
选项
A、can be blown around by the wind
B、dwarfs man’s best efforts
C、heats the air above it
D、may still win the struggle
答案
D
解析
在第一段,作者提到火如同有生命的造物,人类与火的战斗就如同与有生命的野兽作战。最后一段,作为文章的结尾,作者又提到与野兽般的大火之战,人类不一定就是胜者。火可能是赢家,似乎火是有生命的。选项D是正确的。
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