BEIJING, April 13 (Xinhua)-- The Golmud-Lhasa section of the Qinghai-Tibet railway will start unmanned test runs from May 1 in preparation for its trial operation on July 1.

    Sources from China's Ministry of Railways said here Thursday that the country will complete the construction of a number of key railway projects with an investment of 34 billion yuan (about 4 billion U.S dollars) in the second quarter this year, including the opening of the Qinghai-Tibet railway.

    Built on the "Roof of the World " and zigzagging across 5,000-meter-high mountain ranges and a 550-km-long frozen belt, the Qinghai-Tibet railway is the first railway in Tibet, aiming at building a closer tie between the plateau with other parts of China.

    According to the ministry, besides the Qinghai-Tibet railway, construction of other major railways will also be accelerated during the second quarter, including the Beijing-Tianjin inter-city track project.

    The ministry also urges that the electrified renovation of the Beijing-Shanghai railway should be completed before July 1.

    Ministry statistics show that the country has completed the construction of railway projects with an investment of 24 billion yuan (about 3 billion U.S. dollars) in the first quarter this year, 2.8 times more than that of the same period of last year. Enditem