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Researchers say people traveling in traffic are three times more likely to suffer a heart attack. They say the risk of a heart a
Researchers say people traveling in traffic are three times more likely to suffer a heart attack. They say the risk of a heart a
admin
2017-02-28
22
问题
Researchers say people traveling in traffic are three times more likely to suffer a heart attack. They say the risk of a heart attack is greatest within an hour of being in traffic.
The findings are based on a German study of almost seven hundred people who suffered heart attacks. The patients described their activities during the four days before their heart attack. Researchers found that those who had been in traffic were three times more likely to have a heart attack within one hour, compared to those who had not been in traffic. Most of those in the study had been traveling by car. But some had been on bicycles and others were on buses.
Research shows that people in cars and buses are exposed to ten times the amount of pollutants as people walking on the street. That is largely because they breathe in the particles and gases released from the vehicles in front of them. Over time, these small particles speed the buildup of a sticky substance in the blood. This can cause blockages to form in the arteries around the heart and lead to a heart attack.
Other studies have also linked heart trouble to stress, similar to the kind that people face while driving in heavy traffic. But the researchers of the latest study say they do not know whether the increased heart attack risk is the result of stress or pollution. They suggest it may be a combination of stress, noise and pollution. Experts say the research shows the need for cleaner vehicles and better city planning to lower the risk of the heart attack.
What suggestion do experts give on lowering the risk of heart attacks?
选项
A、Reducing traffic as much as possible.
B、Living away from noise.
C、keeping vehicles cleaner.
D、Planting more trees in the city.
答案
C
解析
文章末段最后一句提到,专家们认为,该研究表明降低人们心脏病发作的几率需要更清洁的交通工具和更好的城市规划。C)是其中的一项建议,因此可以确定C)为本题的答案。
转载请注明原文地址:https://kaotiyun.com/show/UIaK777K
本试题收录于:
大学英语三级A级题库大学英语三级分类
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大学英语三级
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