A grand bridge over the Yangtze River serving cars and trains began operations on Wednesday in Nantong, Jiangsu province, and is expected to     1     (great) promote the integration (整合) and the economy of one of China’s most developed regions-the Yangtze River Delta.

It took six years and four months    2     (build) the bridge between Nantong and Zhangjiagang. Many new technologies     3    (use) then, including cables (电缆) with the highest tensile (拉力的) strength in the world and     4     advanced anti-collision system.

“The anti-collision system can warn the river traffic authority within 3 kilometers if a ship appears likely to strike the bridge.” an engineer said. Each of the bridge’s 432 cables can hold up to 1, 000 metric tons, roughly the     5     (weigh) of more than 600 cars.

As the second dual-use bridge in Jiangsu,     6     (follow) the Nanjing Yangtze River Bridge, the newly opened structure will help to ease traffic jam,     7     currently occurs on two neighboring Yangtze River bridges in Nantong and Wuxi cities. Travel time between Nantong and Wuxi by highway will be cut in half to 40 minutes.

The upper half of the bridge, a highway of six lanes,     8     (have) a speed limit of 100 kilometers per hour. The     9     (low) half of the bridge has four lanes for trains. With what is designed to be 200 km/h, the new railway lane will cut travel time between Nantong and Shanghai from 3. 5 hours     10     just over an hour.

On Monday, a park in Arouca, Portugal opened a record-setting new bridge. Though it's quite high, it's the     1     (long) of the bridge that has set a record. The 516-meter-long bridge     2     (run) between two mountains in Arouca Geopark in Portugal.

It's a suspension bridge,     3     means that it hangs between its two ends without any supports underneath. The builders say the bridge was inspired by suspension bridges     4    (build) by the ancient Inca people in South America. The 516 Arouca, made mainly of metal was started in May, 2018. It cost $2.8 million, and took over two years     5     (complete).

Arouca Geopark is well-known for its beautiful natural scenery and the many outdoor     6     （activity） that can be done there. But because of the coronavirus pandemic, the number of tourists in the area has been low. Though the bridge was finished last July, it wasn't     7     （official） opened until Monday.

City leaders think the bridge could attract people for a lot of different reasons. Some might come for the scenery. Others might come to see     8     the bridge was built. The website for the bridge describes the walk     9     "the most exciting 516 meters of your life". If you walk quickly, it's possible to cross the bridge in     10     （little） than 10 minutes. But many people will want to enjoy the safe, but scary experience of walking across.