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  3. Every summer in Australia there is the danger of bush fires. Long periods of hot dry weather cause the grass and trees to become

Every summer in Australia there is the danger of bush fires. Long periods of hot dry weather cause the grass and trees to become

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问题     Every summer in Australia there is the danger of bush fires. Long periods of hot dry weather cause the grass and trees to become highly inflammable. In addition to the dryness and high temperature, another important factor is the great amount of oil in the leaves of such trees as eucalyptus, gum and ti trees.
    Fires start very easily, often spontaneously(自动地，自发地), but usually because of a carelessly thrown cigarette or match. If there is a high wind, the ample supply of air fans the flames into an inferno. The radiant heat vaporizes the oil in the leaves; and the fire travels very quickly, sometimes overtakes fleeing cars and burns passengers to death.
    Great fires often occur around Christmas, in areas near big cities, causing great loss of life and property.
Which of the following is NOT mentioned as a factor that contributes to great fire danger?
选项 A、Sultry weather.
B、Cigarettes thrown out of car windows.
C、Pine forests.
D、Windstorm.
答案C
解析 本题属细节题。文章第一段第二句中的“hot dry weather”与A项相对应，第二段第二句中的“there is a high wind”与D项相对应，第二段第一句中的“throw cigarette”与 B项相对应。
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