【推荐1】China may be home to both the longest and highest bridges in the world,    1     neither is as pioneering as the Nanjing Yangtze River Bridge.    2     (build) during the 1970’s, the double-decked bridge     3     (consider) groundbreaking when it was completed in 1968.

But more importantly to some, it was also the first modern bridge to be designed and built by China without help from foreign     4     (architect). “The bridge was so important that it’s undoubtedly a symbol of the city,” said Lu Andong, a professor at Nanjing University’s School of Architecture and Urban Planning. “It is being repaired     5     transportation and safety purposes, but I would expect the chance     6     (transform) the bridge’s tower and the attached park into places of memory.”

With a length of over 5,000 feet, the bridge     7     (carry) both cars and trains.     8     (It) upper deck is a four-lane highway with sidewalks, while the railway tracks are now part of the Beijing-Shanghai train route.

“Everybody loves the bridge,” said Wang Shiqing, a longtime Nanjing resident     9     has collected over 1,00 pieces of Nanjing Yangtze River Bridge souvenirs.” It’s a source of pride,    10     (especial) for local Nanjing people,” he says.

As winter comes, hands and feet can easily get cold especially among women. Thick gloves can be one of the best     1     (option) yet some makes wearing them is not convenient, especially when people want to do something with     2     (they) hands.

However, this was not a problem for ancient Chinese people,     3     had a more exquisite (精美的) tool to keep their hands warm: hand warmers.

There is no accurate     4     (write) record regarding the origin of this tool, but there are some tales about its invention.

One folk story concerns an emperor of the Sui Dynasty who visited Jiangsu in the winter. Due     5     the bitter cold, the local official asked manufacturers     6     (design) a small warmer for the emperor that could be held in one's hands. Thus the hand warmer was created.

By the Song Dynasty, the tool was in widespread use. Techniques for producing the tool were     7     (wide) employed in the Ming Dynasty and the Qing Dynasty. Many poems and books from this period recorded people     8     (use) hand warmers. A Dream of Red Mansions, the classic novel by Cao Xueqin in the Qing Dynasty, also featured a maid sending a hand warmer to the heroine Lin Daiyu in one chapter.

Zhang Mingqi, a veteran manufacturer of hand warmers, was considered     9     first-class craftsman in the Qing Dynasty. The tools that he produced     10     (bear) his surname, called Zhang-style hand warmers.

In 1863 the first underground passenger railway in the world opened in London. It ran for just under seven kilometers and allowed people to avoid terrible     1     (crowd) on the roads above as they travelled to and     2    work. It took three years to complete and was built using an interesting method. This included digging up the road,     3     (lay) the track and then building strong roof over    4     top. When all those had been done, the road surface was replaced.

Steam engines     5     (use) to pull the carriages and it must have been     6     (fair) unpleasant for the passengers, with all the smoke and noise. However, the railway quickly turned out to be a great success and within six months, more than 25,000 people were using it every day.

Later, engineers     7     (manage) to build railways in a system of deep tunnel (隧道)，    8     became known as the tube. This development was only possible with the    9    (introduce) of electric-powered engines and lifts. The central London Railway was one of the most     10     (success) of these newlines, and was opened in 1900. It had white-painted tunnels and bright red carriages, and proved extremely popular with the public.