阅读理解Eatingtoomuchfattyfood,exercising

阅读理解 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 (中风）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 (污染物）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 health1.The text mainly discusses the relationship between A.heart problems and air qualityB.heart problems and exercisingC.heart problems and smokingD.heart problems and fatty food2.The underlined word “modest” in Paragraph 3 most probably means A.relatively highB.extremely lowC.relatively lowD.extremely high3.What can we learn from the text?A.Eating fatty food has immediate effects on your heartB.The EPA conducted many studies on air qualityC.Moderate air quality is more harmful than smoking,D.Stricter regulations on pollutants should be made

ACD解析试题分析：本文主要讲述的是空气污染导致人们的健康受到很大的威胁，文章中提出了具体的建议。
1.A 主旨大意题。根据本文的主题段第一段的内容But there is another factor that can cause your heart problems more immediately: the air you breathe.说明本文主要讲述的是空气污染导致人们的健康受到威胁，故A正确。
2.C 推理题。根据本句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.说明这里的“moderate”与下句的relatively safe形成呼应的关系，故C项正确。
3.D 细节题。根据文章最后一句So stricter regulation by the EPA of pollutants may not only improve environmental air quality but could also become necessary to protect public health.可知要求我们制定严格的规章制度来保证空气质量，故D正确。
考点：考查健康类短文阅读
点评：本文主要讲述的是空气污染导致人们的健康受到很大的威胁，文章中提出了具体的建议。测试考生在阅读基础上的逻辑推理能力，要求考生根据文章所述事件的逻辑关系，对未说明的趋势或结局作出合理的推断；或根据作者所阐述的观点理论，对文章未涉及的现象、事例给以解释。考生首先要仔细阅读短文，完整了解信息，准确把握作者观点。

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