1£®(½Ì²ÄP₅₁) The Great Wall of China is the longest man­made structure ever built(build)£®

2£®(½Ì²ÄP₅₃)Mao Zedong wrote a poem in which he dreamed of “walls of stone to hold back clouds and rain till a smooth lake rises in the narrow gorges”£®

3£®(½Ì²ÄP₅₃)The Three Gorges Dam, which is the biggest construction project in China since the building of the Great Wall and the Grand Canal, has been built to control flooding and provide hydro­electric power for the central region of China.

4£®(½Ì²ÄP₅₃)Sun Yat­sen£¬who was the leader of the 1911 Revolution, first suggested the idea of a dam across the Yangtze River in 1919.

5£®(½Ì²ÄP₅₃)More than a million people who lived in the region have moved from their homes.