Eating too much fatty food, exercising too little and s...
問題詳情:
Eating too much fatty food, exercising too little and smoking can raise your
future risk of heart disease. But there is another factor that can cause your heart
problems more immediately: the air you breathe.
Previous studies have linked high exposure (暴露)to environmental pollution to an increased risk of heart problem, but two analyses now show that poor air quality can lead to heart attack or stroke (中風)within as little as a few hours after exposure.
In one review of the research, scientists found that people exposed to high levels of
pollutants (汙染物)were up to 5% more likely to suffer a heart attack within days of exposure than those with lower exposure. A
separate study of stroke patients showed that even air that the U. S. Environmental
Protection Agency (EPA) considers to be of “moderate” (良好)quality and relatively safe for our health can raise the risk of stroke as much as 34% within 12 to 14 hours of exposure.
The authors of both studies stress that these risks are relatively small for healthy people and certainly modest compared with other risk factors such as smoking and
high blood pressure. However, it is important to be aware of these dangers because
everyone is exposed to air pollution regardless of lifestyle choices. So stricter regulation by the EPA of pollutants may not only improve environmental air quality but
could also become necessary to protect public health.
text mainly discusses the relationship between .
A. heart problems and exercising B. heart problems and fatty food
C. heart problems and smoking D. heart problems and air quality
underlined word “modest” in Paragraph 3 most probably means .
A. extremely high B. relatively low
C. extremely low D. relatively high
11. What can we learn from the text?
A. Eating fatty food has immediate effects on your heart.
B. Moderate air quality is more harmful than smoking,
C. The EPA conducted many studies on air quality.
D. Stricter regulations on pollutants should be made.
12.. The author’s purpose of writing the text is most likely to .
A. persuade B. inform C. describe D. entertain
【回答】
DBDB
知識點:健康保健類閱讀
題型:閱讀理解
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