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

In the 1950s, the Egyptian government wanted to build a new dam across the Nile     3     (control) floods, produce electricity and supply water to more farmers, but the proposal led to     4     (protest).

After listening to the experts’ opinion, the government turned to the United Nations for help. Then a committee     5     (establish) to limit damage to the Egyptian buildings and prevent the loss of cultural relics.     6     (final), a document was signed, and the work     7     (begin) in 1960.

    8     the project ended in 1980, it was considered a great success. Not only had the countries found a path     9     the future that did not run over the relics of the past, but they had also learnt that it was possible for countries to work together to build a better tomorrow. The spirit of the Aswan Dam project is still alive today.   If a problem seems too difficult for a single nation, the     10     (globe) community can sometimes provide a solution.

Do you know Dunhuang? Dunhuang is home to the Mogao Grottoes,     1     UNESCO World Heritage Site, elements of which are     2     display in an ongoing exhibition at the National Base for International Cultural Trade in Beijing. Painted sculptures and other splendid items of cultural heritage have been reproduced, while the caves     3     are now closed have been reproduced in digital form.

The exhibition area,     4     (cover) some 1,600 square meters, features the results of research on nearly 50 sets of cultural relics from the Dunhuang Academy.     5     the real grotto in Dunhuang is no longer open to the public, the digitally     6     (restore) grotto can be preserved forever in the digital space.

Opening in July, the exhibition will last for three years. It is the first time that the Dunhuang Academy     7     (hold) such a long exhibition in Beijing. By the end of 2021, the “digital Dunhuang project” had completed the digital    8     (collect)of 268 grottoes. Such projects have provided a means of preserving China’s splendid cultural heritage for future generations, while making it more     9     (wide) available both at home and abroad. It is hoped that the “digital Dunhuang” will not only allow more audiences to experience the artistic charm of Dunhuang,     10     also promote exchanges between cultures along the Belt and Road under new historical conditions.