Eatingtoomuchfattyfood,workingouttoolittleandsmokingcan...

問題詳情：

Eating too much fatty food, working out 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 (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 health.

text mainly discusses the relationship between ______.

t problems and air quality                       t problems and exercising

t problems and smoking                          t problems and fatty food

underlined word “modest” in Paragraph 3 most probably means ______.

tively high           emely low           tively low            emely high

can we learn from the text?

ng fatty food has immediate effects on your heart.

EPA conducted many studies on air quality.

rate air quality is more harmful than smoking.

cter regulations on pollutants should be made.

author’s purpose of writing the text is most likely to _______.

rm                     uade                   ribe                    rtain

【回答】

1.A; 2.C; 3.D; 4.A 解析：1.細節理解題.根據第一段"But there is another factor that can cause your heart problems more immediately:the air you breathe."可知文章主要討論了心臟問題和空氣質量之間的關係.故選A. 2.詞義辨析題.根據最後一段"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."可知"modest"意為"相對較低".故選C. 3.推理判斷題.根據最後一段"So stricter regulation by the EPA of pollutats may not only improve environmental air quality but could also become necessary to protect public health."可知應該嚴格控制污染問題.故選D. 4.推理判斷題.根據第一段"Eating too much fatty food,exercising too little and smoking can raise your future risk of heart there is another factor that can cause your heart problems more immediately:the air you breathe."可知作者寫這篇文章主要是為了告訴人們心臟問題和空氣質量之間的關係.故選A.

知識點：科普環保類閲讀

題型：閲讀理解