cc飞车竞赛 | 初中作文 | 高中作文 | 话题作文 | 想象作文 | 英语作文 | cc飞车 | cc飞车竞速下载平台 | 作文专题 | 写作指导 | 应用文 | 记述文 | 日记大全 | cc飞车统计作文
写人作文 | cc飞车竞速官网 | 写物作文 | 写景作文 | cc飞车网投登录 | 科幻作文 | 节日作文 | 暑假作文 | 描写作文 | 毕业作文 | 议论文 | 说明文 | 单元作文 | 中考满分作文



more than 20 railway transportation lines totaling some 2,000 kilometers are planned for a dozen chinese cities, said officials with the ministry of construction.

railway transportation icc飞车开奖平台 ncludes urban express railways, subways, light rails, and trolley cars.

beijing, shanghai, chongqing, wuhan, and changchun are all planning to build such a network to conquer the traffic jams and serious pollution caused by the rapid increase of the urban population and the number of automobiles in china.

the network will have the advantages of cleacc飞车暴风秒杀剧情 nliness, security, punctuality, high speed, and large transport capacity, said the officials.

financial and technological factors have hampered the development of such a system over the past three decades, and there are now only about 90 km of underground lines in the country with some 600 subway trains in use.

now, however, beijing alone is planning to build a railway system composed of 13 main routes and two extensions lines totaling 408 km, and increase the railway transport proportion to 50 percent from the present 15 percent, according to local officials.

china's first urban railway line was in beijing and began test operations in october 1969, and the second, in tianjin, was open to traffic in december 1984.