With the 【小题1】of economy, how to balance progress 【小题2】 the protection of cultural heritage is a big challenge. Great solutions,【小题3】 ，tend to arise from the challenges. In 1950s, in order 【小题4】 control the flooding, the Egyptian government made a proposal to build a new dam across the Nile. It would cause the water levels to rise high enough to flood 【小题5】 number of ancient temples, 【小题6】 were among Egypt’s cultural heritage. So the government turned to the United Nations for help. Soon an international committee was 【小题7】 to help Egypt to find the solution. 【小题8】, they made a decision that all cultural【小题9】 should be removed. The project was considered a greatly successful example by UNESCO to prevent world heritage 【小题10】 disappearing.