题目内容：

阅读下面材料，在空白处填入适当的内容（一个单词）或括号内单词的正确形式。

Hong Kong–Zhuhai–Macau Bridge is one of the most challenging constructions of its kind as well as the world’s 1.（long) sea-crossing bridge. Its life span 2.(set) at 120 years. It3. (reported) can stand magnitude-8 earthquake, scale-16 typhoon as well as the collision with  4.300,000-ton ship. The bridge is the national key project featured with strategic significance, large involvement, highly difficult level of construction, long construction time, high 5. (require) on technical design and environmental protection, many participant parties, complex management and coordination. Due to the long distances6.the cities, the project is actually a series of bridges and tunnels,7.(connect) by artificial islands. British newspaper “The Guardian” named the mega-structure one of 8.  (it) “seven wonders of the modern world.”

It will be the first new land transport link between the east and west coasts of the Pearl River. The bridge will benefit the economic development of the whole of the Delta and create a regional transport network,9.(improve) upon 10.is considered to be a weak land transport network currently in place.