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１９９８年的夏天令人终身难以忘怀。长江、嫩江、松花江洪水肆虐，南北告急。军民严防死守，奋勇抗击洪涝灾害，谱写了无数可歌可泣的英雄诗篇。洪水给我们带来了深重的灾难，经济损失达数千亿人民币。人们不禁要问，在我国都有哪些自然灾害？它们的危害程度如何？怎样防...
The summer of 1998 makes life unforgettable. The Yangtze River, Nen River, Songhua River flood raging, North-South emergency. Military and civilian strictly guard against sticking to courageously combat the floods, write countless epic Heroes Psalms. Floods have brought us deep disaster, economic losses of hundreds of billions of yuan. People can not help but ask, what are the natural disasters in our country? How harmful are they? How to prevent ...