When the project ended in 1980,     1     (被视为一个巨大的成功).     2     (这些国家不仅找到了一条未来发展之路) that did not run over the relics of the past, but they had also learnt that    3     (国家合作是可能的) to build a better tomorrow.

The spirit of the Aswan Dam project is still alive today. Perhaps the best example is shown by UNESCO,     4     (该组织实施了一项计划) that prevents world cultural heritage sites around the world from disappearing. If a problem seems too difficult for a single nation, the global community can sometimes provide a solution.