题目

读下图，并结合学习过的知识，回答下列问题。 （1）描述左图中岛的地形特征。（3分） （2）根据左图中信息概括聚落的分布特点并简述其主要原因。（7分） （3）若修建连接甲、乙两城的铁路，试评价当地自然条件对铁路的影响。（5分）                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            答案： (1).地形地势特征：西南为山地，东北为平原（2分）； 地势西南高，东北低（1分）； (2).分布特点：西南地区多沿海分布，中部和东北地区多沿河流分布（4分）    主要原因：地形平坦，水源充足，交通便利（每点1分  3分） (3).有利：地形平坦（1分）    不利：沿途多沼泽；跨越多条河流； 多火山地震，地质基础不稳固（不利影响任答2点，每点2分，共4分）

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