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  3. Underground Coal Fires Coal burning deep underground in China, India and Indonesia is threatening the environment and human

Underground Coal Fires Coal burning deep underground in China, India and Indonesia is threatening the environment and human

admin2014-09-13  4
问题                         Underground Coal Fires
    Coal burning deep underground in China, India and Indonesia is threatening the environment and human life, scientists have warned. These large-scale【C1】______blazes(火焰)cause the ground temperature to heat up and kill surrounding vegetation, produce greenhouse gases and can【C2】______ ignite(点燃)forest fires, a group of scientists told the annual meeting of the American Association for the Advancement of Science in Denver. The resulting【C3】______of poisonous elements like mercury can also pollute local water sources and soils, they warned.
    "Coal fires are a global disaster, " said Associate Professor Glenn Stracher of East Georgia College in Swainsboro, USA. But【C4】______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 caused to【C5】______and under the right combinations of sunlight and oxygen, can trigger spontaneous(自发的)catching fire and burning. This can occur underground, in coal stockpiles, abandoned mines or even as coal is transported.【C6】______fires in China consume up to 200 million tons of coal per year, delegates were told. In【C7】______, the U. S. economy consumes about one billion tons of coal annually, said Stracher, 【C8】______analysis of the likely impact of coal fires has been accepted for publication in the International Journal of Coal Ecology.【C9】______underway, coal fires can burn for decades, even centuries. In the process, they release large【C10】______of greenhouse gases, poisonous fumes and black particles into the atmosphere.
    The members of the panel discussed the【C11】______these fires may be having on global and regional climate change, and agreed that the underground nature of the fires makes them difficult to【C12】______.
    Ultimately, the remote sensing and other techniques should allow scientists to【C13】______how much carbon dioxide these fires are emitting(释放). One suggested【C14】______of containing the fires was presented by Gary Colaizzi, of the engineering firm Goodson, which has developed a heat-resistant grout (灌浆), which is designed to be pumped into the coal fire to【C15】______the oxygen supply.
【C12】
选项 A、develop
B、relieve
C、supply
D、detect
答案D
解析 这句话表明，在地下燃烧的特质使这些火焰很难被探测到。develop开发，发展；relieve解除，缓解；supply提供，供应；detect侦察，发现，探测。
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