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高三概要写作In 1971 China's first subway line in Beijing

时间:2019-02-02 20:36  作者:Edmond  来源:www.2abc8.com

 In 1971, China's first subway line in Beijing was formally put into operation. By December  2017, there were 171 subway lines stretching over 5,083 km in 35 cities on the Chinese mainland. Currently, China has the longest urban railway network in the world, which is predicted to surpass 6000 km by 2020.
The rapid development of China’s urban railway system reflects the country’s growingeconomic strength. The system has experienced the fastest growth over the past 15 years due to the investment of wealth accumulated from the reform and opening up in urban infrastructure construction. An urban railway system is expensive to build, with one kilometer of subway costing approximately 700 million yuan ($110 million). A city without economic strength cannot develop such an expensive system.
The progress in urban railway construction technologies has also contributed to the fast expansion of the infrastructure. Subway construction involves building underground tunnels, laying rails, manufacturing trains and the operation and management of subways. It is a systematic project which not only covers traditional infrastructure building but also modem electronics and information technology. China s railway construction technologies are the best inthe world, with Chinese subway trains now exported to developed countries including the United States.
The expansion of Chinese cities has made it necessary to develop urban railway systems. Since the start of the reform and opening up, a large number of people have migrated to cities and the number of private cars has increased dramatically, resulting in serious traffic congestion. Building subways has become an important way to solve this problem.
This year marks the 40th anniversary of the launch of China's reform and opening up, and the rapid development of China's urban railway system exemplifies the achievements made by the policy. As China furthers its opening up, it will continue to maintain steady and rapid economic growth and railway systems will be available in more and more cities.


One possible version:
The past few decades has witnessed the fast development of Chinese urban railways both in number and length, which is a reflection of China’s prosperous economy. Actually, not only the growing construction technologies but also the expansion of Chinese cities with booming population and heavy traffic, stimulates the urban railway construction. With the deepening of the reform and opening up policy, more urban railways will come into use.

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