1     ( sit ) back in my seat, I can’t believe that I’m about to travel along the railway that many foreign experts claimed was “impossible”. The train has been racing along     2     ( steady ) since it left Xining.

I was one of the people     3     came from all parts of China to work on this railway. Taking years to complete the Qinghai - Tibet Railway is a record of all of our efforts to overcome     4     most difficult challenges. How     5     ( protect ) the ecosystem was among the top concerns . The first landmark     6     ( catch ) my eye is the Qingshuihe Bridge, the world’s longest bridge built over permafrost. To prevent damage to wetlands and grasslands, 675 bridges     7     ( build ) between Golmud and Lhasa.

Tanggula Station,     8     ( locate ) at over 5,000 metres above sea level, is the highest railway station in the world. To make sure we stayed healthy, several oxygen - making stations were constructed. Passing Cuona Lake, I feel a sense of pride and     9     ( achieve ). Along the lake we built a twenty - kilometre wall to protect the lake     10     construction waste.

I’m proud that we built our “impossible” railway. It truly is an extraordinary “Sky Railway”.

Imagine a vehicle that can pick you up outside your home, drive to the nearest railway line, and change itself into a train. It may sound like a story from “Thomas the Tank Engine,”     1     that’s exactly what Japan’s DMV Road-Rail buses have been doing since they    2     (launch) on Christmas Day 2021.

With a capacity of 23, the DMV is a diesel-powered (柴油驱动的) bus fitted with a set of retractable (可缩进的) rail wheels    3    can be put in place in about 15 seconds. Lighter than a traditional train, the DMV also consumes less fuel and is    4     (cheap) to maintain.

    5     (advertise) as “the world’s first operational dual-mode vehicle,” it is actually the latest in a long series of similar experiments    6     (improve) rural rail services. As far back as the 1930s, similar vehicles    7    the DMV were tested in England and West Germany.

Tokushima government hopes that the DMV buses    8       (become) a tourist draw in their own right. It also believes that the vehicles could also be useful for reaching isolated communities in the event of natural    9     (disaster) such as earthquakes, which can leave sections of roads or railway lines    10     (usable).

The fastest driverless train is running on the first smart high-speed railway in the world. It     1    (call)Fuxing, running on the Beijing-Zhangjiakou high-speed railway. It connects Beijing and Zhangjiakou—the two host     2    (city)of the 2022 Winter Olympics.

The new high-speed railway was built along an old historic railway, the Beijing-Zhangjiakou railway. It was known     3    the first railway designed and built by Chinese people alone. It was completed in 1909 and was designed by Zhang Tianyou, the “Father of China’s Railway”.

The train on the railway is the first of its kind that is covered by China’s Beidou Navigation Satellite System(北斗卫星导航系统). The train runs between stations all by     4    (it). It starts and stops, opens and closes doors, as well as deals with what happens     5    (sudden). What’s more, the train can be repaired by robots. All the stations along the railway have different robots to work for passengers(乘客), like     6    (carry)luggage and giving directions.

There are 10 stations along the 174-kilometer railway. The train can run     7    (quick) , and the travel time between the two cities is cut down     8    over 3 hours to 47 minutes.

Now China has     9    (excellent)high-speed railway system in the world. From 35 to 350 kilometers per hour, the both old and young railway is a witness(见证者)to the rapid     10    (develop)of China’s railway.