China’s new cross-sea bridge was 【小题1】(office) opened on 24th October after 9 years of construction. The 55-kilometre-long structure is the 【小题2】(long) over-sea bridge in the world, 【小题3】(link) the cities of Hong Kong and Macau to the Chinese mainland.
In one section, the bridge consists of 【小题4】 6.7-kilometre undersea tunnel (隧道) and two artificial islands. The tunnel is built for ships 【小题5】(cross) and planes to take off from the nearby Hong Kong International Airport. As there is height limitation in the airspace, the tunnel must 【小题6】(build) subsea instead of a bridge with tall towers.
About 400,000 tons of steel was used in the project, equal 【小题7】 eight times the amount used to build the Sydney Harbour Bridge. According to 【小题8】(it) engineers, it should be able to withstand a magnitude-8 earthquake, a super typhoon, or a collision with a 300,000-tonne ship.
With full 【小题9】(cover) of 4G network, the bridge can be seen as a unique application of wireless technology. According to Chinese media, authorities will use facial recognition system to detect yawning drivers on the bridge. 【小题10】 a driver yawns three times, an alarm will go off.