There comes a time when the old must give way to the new. 【小题1】 (keep) the right balance between progress and the protection of cultural sites can be 【小题2】 big challenge.

In the 1950s, the Egyptian government wanted to build a new dam across the Nile 【小题3】 (benefit) more farmers, 【小题4】 led to protests. The government turned 【小题5】 the United Nations for help. Then a committee 【小题6】 (establish) to limit damage to the Egyptian buildings. 【小题7】 (final) a document was signed, and the work began in 1960.

When the project ended in 1980, it was considered a great 【小题8】 (succeed). The spirit of the Aswan Dam project 【小题9】 (be) still alive today. If a problem seems too difficult for a single nation, the 【小题10】 (globe) community can sometimes provide a solution.