小练笔。    
       黄河在近两千年间决口一千五百多次，改道二十三次，被称为“多灾多难的祸河”。可如今黄河又发生了变化：黄河中下游地区竟然“断流”了。 这是一件好事吗？请你谈谈看法。
                                                                                                                                                             
                                                                                                                                                             
                                                                                                                                                              

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