为什么把“晋.陕.蒙”称为“黑三角”jjjjjjjjjjjjjjjjjjjjjjjjjjjjj

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为什么把“晋.陕.蒙”称为“黑三角”jjjjjjjjjjjjjjjjjjjjjjjjjjjjj
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为什么把“晋.陕.蒙”称为“黑三角”jjjjjjjjjjjjjjjjjjjjjjjjjjjjj
为什么把“晋.陕.蒙”称为“黑三角”
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为什么把“晋.陕.蒙”称为“黑三角”jjjjjjjjjjjjjjjjjjjjjjjjjjjjj
黄河晋陕峡谷为何成为污染黑三角 中广网北京5月13日消息 中央电视台系列节目《黄河体检报告》的前三期调查了黄河的上游和中游,一路所看到的景象有喜有忧.发现的惊喜是,经过各地治理,黄河多年来的污染顽症终于得到了一定改善.记者继续沿河而下,来到了内蒙、山西、陕西三省的交界处.在被称之为 “晋陕峡谷”的黄河段,本来平缓的黄河两岸悬崖峭立,水石相激.在当地,老百姓将此段黄河 称之为“黑三角”.

污染严重

没听说过