The ancient Chinese built two great engineering wonders: the Great Wall and the Grand Canal. Though the Great Wall’s effect in military     1     (defend) has worn off over time, the Grand Canal remains an important channel of cultural communication.

The Grand Canal,     2     is made up of three parts (Suitang Grand Canal, Beijing Hangzhou Grand Canal and Zhedong Grand Canal), is a     3     (run) epic (史诗) of transformation. The man-made waterway runs more than 2,000 kilometres from north to south across the large eastern flatland of China. It is about 16 times     4     size of the Suez Canal in Egypt and 33 times     5     (long) than the Panama Canal, the world’s second- and third-largest man-made waterways. “It sees the striking and early development of water engineering,” the UNESCO website says     6     (official).

In ancient times, the Grand Canal served     7     the key waterway for grain transport and every kind of economic and cultural exchange. It also improved the time-consuming journeys of workers     8     materials for the building of the Forbidden City in Beijing, the imperial city of the Yuan (1271-1368), Ming and Qing (1644-1911) dynasties.

Years ago, it     9     (inspire) the name of Chenchen, one of the three mascots (吉祥物) of the Hangzhou Asian Games. Chenchen, from the Gongchen Bridge, which goes across the Hangzhou part of the Grand Canal, is coloured blue     10     (suggest) science and technology.