Now, Mount Everest is actually an interesting comparison of a new approach 【小题1】how we deal with garbage produced in the course of space exploration, as it’s often given the dubious hono r(耻辱) of being the world’s highest garbage dump. Decades after the first conquest of the world’s highest peak, tons of rubbish left behind by climbers 【小题2】 (start) to raise concern, and you may have read in the news that there’s expectation 【小题3】Nepal will crack down on mountaineers with stricter enforcement of penalties and legal obligations. The goal, of course, is to persuade climbers to clean up after themselves, so maybe local not-for-profits will pay climbers who bring down extra waste, or expeditions might organize voluntary cleanup trips. And yet still many climbers feel that independent groups 【小题4】police themselves. There’s no simple or easy answer, and even well-intentioned efforts at conservation often run into problems. But that doesn’t mean we shouldn’t do 【小题5】is in our power to protect the environments that we depend on, and like Everest, the remote location and inadequate infrastructure (基础设施)of the orbital environment make waste disposal a challenging problem. But we simply cannot reach new heights and create an even higher garbage dump, 【小题6】out of this world.

The reality of space is that 【小题7】a component on a satellite breaks down, there really are limited opportunities for repairs, and only at great cost. But what if we were smarter about 【小题8】we designed satellites? What if all satellites, regardless of what country they were built in, had to be standardized in some way for recycling, servicing or active deorbiting (脱离轨道)? What if there actually were international laws that enforced end-of-life disposal of satellites instead of moving them out of the way as a temporary solution? Or maybe satellite manufacturers need 【小题9】(charge) a deposit to even launch a satellite into orbit, and that deposit would not be returned 【小题10】the satellite was disposed of properly. Or maybe a satellite needs to have technology on board to help accelerate deorbit.

China will establish a new batch of national parks, including Huanghekou, Qianjiangyuan-Baishanzu and Kalamayli, in a steady and 【小题1】 (order) manner, Guan Zhiou, head of the National Forestry and Grassland Administration, said on Saturday.

Speaking at the second National Park Forum held in Xining, capital of Qinghai province, Guan said China has adopted the strictest measures 【小题2】 (strengthen) the protection of the authenticity and integrity of the ecosystem, and promote the continuous improvement of ecological functions.

China’s national parks are specific land or sea areas 【小题3】 main purpose is to preserve the 【小题4】 (national) representative natural ecosystems of the country and realize the scientific protection and reasonable use of natural resources.

In 2021, China established the first batch of national parks, with 【小题5】 protected land area of 230,000 square km. These parks, including the Sanjiangyuan National Park, the Giant Panda National Park, the Northeast China Tiger and Leopard National Park and so on, are home to nearly 30 percent of the key terrestrial (陆生的) wildlife species 【小题6】 (find) in the country.

“The Sanjiangyuan park realized the full protection of the source of the Yangtze, Yellow and Lancang 【小题7】 (river) and the Tibetan antelope population has recovered to over 70,000. In the Giant Panda National Park, more than 70 percent of wild pandas are 【小题8】 good protection,” the official added.

“Efforts 【小题9】 (make) to promote high-level protection and facilitate the promulgation (颁布) of the National Park Law,” Guan said, 【小题10】 (add) that China will also increase the application of new technologies, build a world-class scientific research monitoring platform, and strengthen national park management capabilities.

It took years 【小题1】(complete) the Qinghai-Tibet Railway. The construction workers 【小题2】(overcome) the most difficult engineering challenges，one of which was how to protect the delicate ecosystem.To allow the wild animals to move safely and freely in their 【小题3】(nature) habitat，they built thirty-three passages under the railway. To prevent damage to wetlands and grasslands，675 bridges with a total length of about 160 kilometres 【小题4】(build) between Golmud and Lhasa. They even moved 140，000 square metres of wetland to 【小题5】 new area in order to protect its distinct ecosystem. 【小题6】(locate) at over 5，000 metres above sea level，Tanggula Station 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 【小题7】 (great) challenge for railway workers. To make sure they stayed healthy，several oxygen-making stations were constructed. To protect Cuona Lake 【小题8】 construction waste，the railway workers used thousands 【小题9】 thousands of sandbags to build a twenty-kilometre wall along the lake. In a word，the railway workers built our “impossible” railway with the care that the environment deserves. It 【小题10】(true) is an extraordinary “Sky Railway”.