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阅读下列材料,回答问题:材料一:京沪高速铁路是中国《中长期铁路网规划》中投资规模最大、技术含量最高的一项工程。京沪高铁于2008年1月18日在北京举行动工仪式,并确定全线建设总工期约5年。京沪高铁土建工程的6个标段、40个工程点将陆续开工。材料二:现有的京沪铁路长度仅为全国铁路营运线的2%,但它连接着京津冀与长三角两大经济圈,承担着全国10.2%的铁路客运量和7.2%的货物周转量,其运输密度是全
Read the following materials to answer the questions: Material 1: The Beijing-Shanghai high-speed railway is China’s “Medium- and Long-term Railway Network Plan” with the largest investment and highest technical content. The Beijing-Shanghai High Speed Rail held a groundbreaking ceremony in Beijing on January 18, 2008, and determined that the total construction period for the entire line will be about five years. The six bidding sections and 40 engineering points of the Beijing-Shanghai high-speed rail civil engineering project will start one after another. Material 2: The length of the existing Beijing-Shanghai railway is only 2% of the national railway operation line, but it connects the two economic circles of Beijing-Tianjin-Hebei and the Yangtze River Delta, and bears 10.2% of the country’s railway passenger traffic and 7.2% of the cargo turnover. Quantity, its transport density is full