Stepping outside the railway station early     1    an autumn morning,visitors are met with the view of the cold air along with the water, forming a thick, soft blanket of fog (雾) over the Grand Canal,the “main street” of Venice. It’s a sight that    2     (welcome) millions of visitors from all over the world since the city became one of Europe’s economic superpowers.

Yet, the breath-taking beauty     3    inspired countless painters, writers and artists over the centuries easily damaged is at risk of being lost forever. The city’s    4     (survive) is threatened (威胁) by rising water levels. The unstoppable increase in sea level has caused flooding    5     (become) the order of the day.

After 1966, the year of the worst flooding in Venice’s history, the Italian Government started a project to save the city.     6     project needing a lot of effort was carried out to protect the lowest areas from flooding. Thirty     7     (year) later, there was an agreement     8     (support) by everyone on the     9     (success) results both of the technical achievements and international cooperation(合作).

But Venice still needs attentive care. The city remains threatened on several fronts— mass tourism, the possible damage of city development     10     a large number of boats.