SAT寫作高分范例之青藏鐵路

　　Qinghai-Ti bet railway

　　The QinghaiXi zang railway, Qingzang railway, or QinghaiTi bet railway, is a high-elevation railway that connects Xining, Qinghai Province, to Lhasa, Ti bet Autonomous Region, in Peoples Republic of China.

　　The total length of Qingzang railway is 1956 km . Construction of the 815 km section between Xining and Golmud was completed by 1984. The 1142 km section between Golmud and Lhasa was inaugurated on 1 July 2006 by president Hu Jintao: the first two passenger trains were Qing 1 from Golmud to Lhasa, and Zang 2 from Lhasa.This railway is the first to connect the Ti bet Autonomous Region to any other province, which, due to its elevation and terrain, is the last province-level entity in mainland China to have a conventional railway. Testing of the line and equipment started on 1 May 2006. Passenger trains run from Beijing, Chengdu, Chongqing, Guangzhou, Shanghai, Xining and Lanzhou.

　　The line includes the Tanggula Pass, which, at 5,072 m above sea level, is the worlds highest rail track. The 1,338 m Fenghuoshan tunnel is the highest rail tunnel in the world at 4,905 m above sea level. The 4,010-m Guanjiao tunnel is the longest tunnel from Xining to Golmod and the 3,345-m Yangbajing tunnel is the longest tunnel from Golmod to Lhasa. More than 960 km, or over 80% of the Golmud-Lhasa section, is at an elevation of more than 4,000 m. There are 675 bridges, totalling 159.88 km, and about 550 km of the railway is laid on permafrost.

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