热点31 高铁的作用及铁路的发展-备战2021年高考英语考前时事热点话题阅读+题型专练

备战2021年高考英语考前时事热点话题阅读 热点31 高铁的作用及铁路的发展 一、完形填空 1 Sitting back in my seat, I can’t quite believe that I’m about to travel along the railway that many foreign experts 1 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 2 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 Qinghai-Tibet Railway is a record of all of our efforts to 3 the most difficult engineering challenges. How to protect the 4 ecosystem was among the top 5 . 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 6 their leisure. Thirty-three passages have been built under the railway to allow the animals to move safely and freely in their natural 7 . Wild animals such as these Tibetan antelopes have now been using these passages for years. They seem totally 8 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 Colmud and Lhasa. We even moved 140,000 square metres of wetland to a new area in order to protect its 9 ecosystem. The journey has been flying by, and 10 I know it, we have reached Tanggula Station. 11 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 weather and high levels of UV radiation presented perhaps the greatest challenge for railway workers. To make sure we stayed healthy, several oxygen-making stations were 12 . We were also able to enjoy regular breaks in lower