1 . At 8,844.43 meters high, Mount Qomolangma (珠穆朗玛峰) is the tallest mountain on Earth. While it is famous for its beautiful views, parts of the mountain are facing a problem: rubbish (垃圾). Every year, thousands of visitors throw away tons of rubbish, such as bottles and plastic bags.
According to the UN, over 140 tons of rubbish has been left on the mountain. To reduce rubbish, China is limiting (限制) the number of people who are allowed to climb up the north side of the mountain. Only 300 people will be allowed to climb it, and only during spring.
Local people cleaned the mountain last year, removing rubbish at a height of 5,200 meters. They collected about8.4 metric tons (公吨) of rubbish.
This year, the local government plans to spend 4 million yuan on a new clean-up activity. The local government is also setting up stations to sort (分类), recycle and break down rubbish collected from the mountain. A group of artists will also try to turn the rubbish into art works. They will show these works of art to remind people not to leave rubbish when climbing the mountain.
1. What problem are parts of Mount Qomolangma facing?| A．Air pollution. | B．Rubbish. |
| C．Noise. | D．Water pollution. |
| A．140. | B．5,200. |
| C．4 million. | D．300. |
| A．using up | B．making better |
| C．putting on | D．taking away |
| A．teach people to make works of art |
| B．help people to know about Qomolangma |
| C．encourage people to clean up Qomolangma |
| D．remind people not to throw rubbish on Qomolangma |
| A．A notice (通知). | B．News. |
| C．A story. | D．An advertisement (广告). |
2 . Breathing dirty air can cost someone’s lifespan (寿命) months—even years, a new study finds. Worldwide, air pollution lowers average lifespans by a year. Scientists shared their new findings in Environmental Science & Technology Letters.
Air pollution (污染) has been linked to many health problems. Most earlier studies have looked at how tiny air pollutants affected rates of illness or death. But now an environmental scientist, Joshua Apte, is going even further. He works at the University of Texas, Austin. He together with his team is looking at life expectancy, hoping to make the threat easier to understand.
PM 2.5 is what scientists call tiny particles of pollution in the air. Higher levels of PM2.5 can cause health problems and cut months, if not years, from the average lifespan. This analysis shows pollution affects life expectancy in different parts of the world.
The World Health Organization (WHO) recommends limiting PM 2.5 to 10 micrograms (微克) per cubic (立方) meter of air. Apte’s group used data to try to find how this low level would help people. But meeting the WHO standard won’t get rid of health damage from dirty air. That’s because even below 10 micrograms per cubic meter pollution still causes huge risks.
Reducing air pollution could increase life expectancy. The scientists also compared how other threats shorten life spans across the globe. These risk factors included smoking and cancer.
These results show that in poor countries, cleaning up dirty air could greatly increase lifespans. It could have as big an effect as cleaning up drinking water, or curing lung cancer. However, in wealthier countries air pollution shortens life expectancy by less than half a year. All forms of cancer, in fact, shorten the average life expectancy by more than 3.5 years. “Knowing this can really help people. or policymakers, decide where to spend their money.” says Kirk Smith.
1. Why is Joshua Apte’s team carrying out the study?| A．Know how small air pollutants are. |
| B．Study many different healthy problems. |
| C．Let people understand air pollution better. |
| D．Study the life expectancy of different people. |
| A．Its air is very clean. |
| B．It still has pollution risks. |
| C．It will get a prize from WHO. |
| D．Its people will live a healthy life. |
| A．It’s very hard to clean up dirty air in a short time. |
| B．Lung cancer is the leading killer in all kinds of cancers. |
| C．Reducing air pollution can increase all people’s lifespans much. |
| D．The study will help different countries or people take different policies. |
| A．Air Pollution is Shortening Lives Worldwide |
| B．Many Factors are Affecting People’s Health |
| C．Governments are Trying to Make Lifespan Long |
| D．The Effect of Cancer is Worse than Dirty Air |
Plastic pollution at sea is reaching
As plastic breaks down into smaller pieces, it also enters the marine food chain,
While consumers can help reduce plastic pollution by changing their behavior, governments have to step up and accept
