Scientists exploring the ocean floor in Antarctica(南极洲) have found a larger group of fish nests(鱼巢)    1     ever before. The discovery came as a surprise, and it will help scientists develop a more complete idea of the ocean food web in the area.

In the south Weddell Sea, not far from Antarctica’s Filchner Ice Shelf, scientists were    2    (amaze) to discover a group of about 60 million icefish nests on the ocean floor. Before this, the    3    (large) group of icefish nests that had ever been found includes less than 60 nests. Lilian Boehringer, a research student, was the first    4    (discover) the nests. “They were everywhere,” she told The New York Times.

The researchers used a special device called OFOBS to make two more four-hour “lives”,    5     (try) to discover the limits of the nesting area. The nests scientists found were in the shape of    6    circle. Each nest held about 1,700 eggs. Usually, Weddell seals(海豹)    7     (spot) in the waters above the nesting site. Trackers    8    (fix) on some Weddell seals show that they dive all the way to the sea floor.

The team placed a camera on the sea floor before leaving,     9     will take a picture of the nests in the area    10    (two) a day for the next two years. They hope the pictures from this camera will help them learn more about the lives of the icefish.

On October 23, 2018, President Xi Jinping announced the opening of the Hong Kong-Zhuhai-Macao Bridge (HZMB) in Zhuhai, Guangdong province.

The HZMB,     1     (locate) at the waters of the Lingding Sea, is a huge sea-crossing project, linking Hong Kong, Macao and the Chinese mainland city of Zhuhai. As the world’s     2     (long) sea-based project, the 55-kilometre bridge is the result of five years of research and another nine years of building. It has been described as one of the seven     3     (wonder) of the modern world”.

The project     4     (make) up of several parts. It is designed with     5     service life of 120 years. It can withstand very strong winds. The bridge’s engineers had to consider many environmental factors     6     (protect) the     7     (surround) environment while building the bridge. Chinese white dolphins, an endangered species that lives in the area,     8     (be) a particular concern.

The HZMB will make     9     much more convenient to travel between the three areas it connects. It will bring people in Hong Kong, Macao and Guangdong within a “one-hour living circle”,     10     is expected to attract more visitors. It will be a transport link as well as a social; economic, cultural, and tourism connection among the three areas.