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A、Reducing air pollution could save 1.4 m people here. B、Its PM levels are often 10 times higher than China. C、It is among the w
A、Reducing air pollution could save 1.4 m people here. B、Its PM levels are often 10 times higher than China. C、It is among the w
admin
2023-01-30
28
问题
Air pollution is the biggest environmental health risk in the world, says the World Health Organization. Part of the problem is particulate matter, very small particles floating in the air. Particulate matter, also known as PM, may get trapped in the lungs. Scientists have long known about the harmful effects of breathing PM. The particulates are linked to an increased risk of breathing problems, heart attacks, strokes and lung cancer.
A U.S. based team has been studying the issue. Its members are environmental engineers and public health researchers. The team recently prepared a model to show how much people would be helped if air pollution from PM is cut to the WHO’s suggested limits. Joshua Apte is an assistant professor of environmental engineering at the University of Texas, Austin. He led the study. "About 75 percent of the total number of deaths that could be avoided from cleaner air could come from improving air in some of the most polluted parts of the world, like India and China." He adds that improving air quality could bring as many health benefits as when we take steps to deal with major diseases like AIDS.
The study estimates that reducing air pollution around the world could save 1.4 million people in places like India and China. But that is not an easy goal. The report says that even to reduce mortality rates in half, India and China would need to cut pollution levels by almost 70 percent from their 2010 levels. In places like New Delhi, PM levels are sometimes 10 times higher than the amount set in the WHO’s air quality guidelines. India and China are home to some of the world’s most polluted cities. Thirteen of the world’s 20 most polluted cities are in India. The capital, New Delhi, is at the top of the list. The study also shows that even if the pollution levels stay the same, death rates would jump by over 20 percent in India and China.
Joshua Apte explains that the main reason for this increase is population changes in these countries over time. He notes that as the population gets older over time, the number of people at risk of heart attack or stroke goes up. But it may be difficult for India and China to improve air quality since both countries still use coal for electricity. Many roads are becoming filled with vehicles owned by the growing middle class. China has done some work in cleaning the air. But experts believe that air pollution could worsen in India. They worry that India wants to increase the number of coal-powered plants to fuel the country’s economy. They expressed regret that Indian officials have taken little action to limit air pollution.
22.What do we learn about particulate matter?
23.For what did the research team prepare a model?
24.What do we learn about New Delhi, according to the study?
25.What mainly causes death rate to increase in China and India over time?
选项
A、Reducing air pollution could save 1.4 m people here.
B、Its PM levels are often 10 times higher than China.
C、It is among the world’s most polluted places.
D、Its death rates will jump by over 20 percent.
答案
C
解析
根据选项出现的Here、China、places等关键词,推测问题可能问某个地方的相关信息?录音提到世界上污染最重的20个城市,印度占了13个。同时也提到印度首都新德里在该列表中排名第一,故C项正确。该研究估计,减少空气污染将会拯救印度和中国等地区的140万的人口,并非单指新德里,故A项错误。录音提到新德里的PM含量有时候比世界卫生组织空气质量参考设定的量高10倍,并没有与中国对比,故B项也错误。如果中印两国的污染程度保持不变,死亡率将会上升,这是假设情况,D也不能选。
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大学英语六级
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