2015年职称英语考试题型
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Underground Coal Fires a Looming Catastrophe
Coal burning deep underground in China, India and Indonesia is threatening the environment and human life, scientists have warned, these large-scale underground blazes cause the ground temperature to heat up and kill surrounding vegetation, produce greenhouse gases and can even ignite forest first, a panel of scientists told the annual meeting of the American Association For the Advancement of Science in Denver. The resulting release of poisonous elements like arsenic and mercury can also pollute local water sources and soils, they warned.
“Coal fires are a global catastrophe,” said Associate Professor Glenn Stracher of East ia College in Swainsboro, USA, But surprisingly few people know about them.
Coal can heat up on its own, and eventually catch fire and burn, if there is a continuous oxygen supply. The heat produced is not cause to disappear and under the binations of sunlight and oxygen, can trigger spontaneous catching fire and burning. This can occur underground, in coal stockpiles, abandoned mines or even as coal is transported. Such fires in China consume up to 200 million tones of coal per year, delegates were told. parison, the . economy consumes about one billion tones of coal annually, said Stracher, whose analysis of the likely imp
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