A new study led by researchers at the Yale School of Public Health and published in the journal Lancet Planetary Health, finds that China’s countrywide ban     1     traffic mobility from February 10 to March 14 greatly limited automobile emissions and sharply reduced the     2     (country) often severe air pollution.

The improved air quality, in turn, prevented thousands of pollution-related     3     (death), an     4     (estimate)12,125, more than lives lost from the epidemic(流行 病), the study finds.

“This is a very surprising result. The epidemic continues to be a terrible thing for China and the rest of the world, but the decrease in emissions that accompanied     5     has actually presented some positive health results,” said Kai Chen, assistant professor at the Yale School of Public Health and the study’s first author. “The question is, how can we have one without the       6     ?”

Although the findings cannot be directly applied to other countries due   to   different severity of and responses to COVID-19, as well as     7     (differ) air pollution levels and population characteristics, reduced air pollution levels     8     (detect) in other Asian and European countries and the U.S.    9     their own lockdowns (封城), Chen said. He notes that this reduction in pollution has     10     (like) brought about similar health benefits.

Today, Mount Qomolangma's peak is not a lonely place any more. Over 3,500 people have     1    (successful) climbed the mountain over the past years. Meanwhile，climbers have complained about     2    (wait) for hours in the bottlenecks.

In fact，the dangerous     3    (crowd) aren't the only problem. All those climbers need to bring a lot of equipment, much of     4     ends up on the mountain. It is becoming the world's     5    (tall) rubbish dump.

But the good news is that some mountaineers have started to clean up the garbage     6    (leave) on Qomolangma. Mountaineers Paul and Eberhard are part of Eco Everest Expedition, which has been cleaning up rubbish since 2008.So far they     7    (collect) over 13 tons of garbage.

Some of that rubbish is even being used for     8     higher purpose.As part of the Mount Everest 8848 Art Project，a group of 15 artists from Nepal collected 1.5 tons of garbage. They've changed the cans and oxygen tanks     9     74 pieces of art that have already been exhibited in Nepal's capital. Part of the profit from sales     10    (be) available for the Everest Peakers Association which has helped collect rubbish off the mountain.

When     1     (ask) by a TV reporter to talk about air and water quality in his hometown, Qi Mu noted, “The air is great now, and we can take more walks and enjoy being outdoors again.” He felt quite pleased because the villagers were living     2     (harmonious) with nature once more. However, he could not forget about an earlier time     3     his village had been struggling with a serious air quality problem.

In the 1990s, garbage from nearby city was usually brought to the village. “How can we make use of this?” The villagers wondered. Soon they found that garbage could be used     4     (feed) pigs. “Over the next few years,     5     (dozen) of pig farms were set up,” Qi recalled. But then nobody in the village wanted to open their windows. “The smell from the garbage and pig waste was making us sick,” Qi said. The numbers of mosquitoes and flies were also     6     (horrify). “Under such circumstances, no single women wanted to marry anyone in our village and move here,” Qi     7     (sigh).

The villagers could no longer tolerate the situation. So     8     initiative was launched and “clean-up” campaign was added to the government agenda, including restricting large vehicles     9     passing through the village. Garbage from the city was no longer disposed of in the village and more trees were planted. “We can all breathe more freely now that the natural beauty of our village     10     (restore) since then,” said Qi.