【课本原文】
The Sky Railway
Sitting back in my seat, I can’t quite believe that I’m about to travel along the railway that many foreign experts claimed was “impossible”. The train has been racing along steadily since it left Xining. All this time, the song “Sky Railway” has been playing inside my head. The words “railways like massive dragons are winding among the mountains” seem particularly vivid as I travel across the “roof of the world”.
I was one of the people who came from all parts of China to work on this railway. Taking years to complete, the QinghaiTibet Railway is a record of all of our efforts to overcome the most difficult engineering challenges. How to protect the delicate ecosystem was among the top concerns.
The first landmark to catch my eye is the splendid Qingshuihe Bridge, the world’s longest bridge built over permafrost. Look! A group of Tibetan antelopes is moving under the bridge, with some stopping to eat grass at their leisure. Thirtythree passages have been built under the railway to allow the animals to move safely and freely in their natural habitat. Wild animals such as these Tibetan antelopes have now been using these passages for years. They seem totally unaware that we are speeding past at over 100 kilometres an hour.
To prevent damage to wetlands and grasslands,675 bridges with a total length of about 160 kilometres were built between Golmud and Lhasa. We even moved 140,000 square metres of wetland to a new area in order to protect its distinct ecosystem.
The journey has been flying by, and before I know it, we have reached Tanggula Station. Located at over 5,000 metres above sea level, this is the highest railway station in the world. In locations such as this, the thin air, changeable weathe and high levels of UV radiation presented perhaps the greatest challenge for railway workers. To make sure we stayed healthy, several oxygenmaking stations were constructed. We were also able to enjoy regular breaks in lower areas.
As we pass Cuona Lake, I feel a sense of pride and achievement. Using thousands and thousands of sandbags, we built a twentykilometre wall along the lake to protect it from construction waste. Cuona Lake is so close to the railway that I want to reach out and touch its pale blue mirrorlike surface. Water birds playing in the lake, and cattle and sheep wandering the grasslands bring the scenery to life.
The QinghaiTibet Plateau has been attracting people’s admiration for centuries. Now, thanks to our efforts, passengers from all over the country have been enjoying these magical landscapes. I am proud that we built our “impossible” railway, and did so with the care that the environment deserves. It truly is an extraordinary “Sky Railway”.
18. The text mainly tells us
.
A.the QinghaiTibet Railway is the impossible railway |
B.workers met many difficulties in the process of the QinghaiTibet Railway |
C.the building of the QinghaiTibet Railway and the challenges it met |
D.the QinghaiTibet Railway is the one we should be proud of |
19. Why was the “Sky Railway” considered to be impossible?
A.It was built in a place with too much radiation. | B.It was extremely difficult to build this railway. |
C.Too many bridges had to be built along the railway. | D.It was not easy to protect the workers. |
20. What did the railway workers consider most?
A.How to protect the ecosystem along the railway. | B.Their own safety while building the railway. |
C.The great number of bridges along the railway. | D.Grasslands and wetlands along the railway. |
21. What’s the purpose of building Qingshuihe Bridge?
A.To prevent trains from falling into the river. | B.To protect wetlands and grasslands. |
C.To allow the animals to move safely and freely. | D.To protect permafrost and grasslands. |
22. What can we know about Tanggula Station from this text?
A.It is the biggest station of the whole railway. | B.All the railway workers take their breaks here. |
C.Travellers usually breathe in some oxygen here. | D.There exists high levels of UV radiation. |
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