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[audioFiles]2013q2/audio_ezfm_074_20131[/audioFiles] C

游客2024-10-18  33
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答案                           Causes of Forest Fires
    Forest fires are one of the greatest natural destroyers of our forests. / It has been found that about 90% of forest fires are due to human factors. / The most common cause for the forest fires is the carelessness of people. / Smokers may start a forest fire by carelessly dropping lighted matches and cigarettes in a forest. / Tourists sometimes throw the lighted items in the bushes around or on the ground which cause fire. / There are also some natural causes of forest fires. / Forest fires can occur due to lightning which burns the trees. / Earthquake is also responsible for the forest fires, / while other reason for fire is volcanoes and drought. / High temperature and low humidity provides favorable conditions to the fire / and hence it can start in forests. / Since forest fires destroy valuable trees and even kill people, / we need to learn the causes and to know how to prevent them.
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