At the turn of the twentieth century roads dominated land transport.

When was the United States Constitution written?

【单选题】As a large commodity producer, it has been blessed by a __________ in the prices of its exports thanks to booming global demand.

With its perfect l__________, magnificent buildings and enchanting landscape, the Summer Palace is the most splendid classical garden in China.

Many holes can diffuse across the depletion region and enter the n-side. This results in the “injection of excess minority carriers”, i.e., holes into the n-region.

China’s HSR accounts for 1/5 of the world’s total high-speed railway networks.

The succession of railway tunneling projects immensely benefited the circulation of technology and commerce in Europe.

The high-speed Eurostar passed through the Channel Tunnel, connecting the three capital cities of London, Paris and Brussels.

The Baoji-Chengdu railway is the first electrified railway in China.

The Qing government decided to construct the Tangxu railway to protect from foreign powers.