Eating too much fatty food, exercising too little and s...
问题详情:
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 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
知识点:健康保健类阅读
题型:阅读理解
-
在恒温、体积为2L的密闭容器中进行反应:2A(g)⇌3B(g)+C(g),若反应物在前20sA物质由3mol降...
问题详情:在恒温、体积为2L的密闭容器中进行反应:2A(g)⇌3B(g)+C(g),若反应物在前20sA物质由3mol降为1.8mol,则前20s的平均反应速度为()A.v(B)=0.03mol/(L•s)B.v(B)=0.045mol/(L•s)C.v(C)=0.03mol/(L•s)D.v(C)=0.06mol/(L•s)【回答】考点:化学反应速率和化学计量数的关系.专题:化学反应速率专...
-
下列加点词注音全对的一项是( )A.浣女(huàn) 谄媚(xiàn) 邂逅(xiè)B.惘然(wǎn...
问题详情:下列加点词注音全对的一项是( )A.浣女(huàn) 谄媚(xiàn) 邂逅(xiè)B.惘然(wǎnɡ) 纶巾(ɡuān) 铜钿(tián)C.湓浦(pǔ) 贾人(ɡǔ) 嘲哳(zāo)D.迸发(bènɡ) 谪居(zhé) 锦瑟(sì)【回答】【*】B【解析】试题分析:A.Chǎn,C.zhāo,D.s...
-
在探究“光对鼠妇生活的影响”实验中属于变量的是( )A.温度 B.湿度 ...
问题详情:在探究“光对鼠妇生活的影响”实验中属于变量的是( )A.温度 B.湿度 C.光照 D.土壤【回答】C知识点:生物圈是最大的生态系统题型:选择题...
-
________hislessons,hefailedintheexam.A.Notreviewing B.H...
问题详情:________hislessons,hefailedintheexam.A.Notreviewing B.Havingnotreviewed C.Notreviewed D.Nothavingreviewed【回答】D知识点:非谓语动词题型:选择题...
相关文章
- Low-CostGiftsforMother'sDay GiftNo.I Offertobeyourmot...
- Low-CostGiftsforMother'sDay GiftNo.I Offertobeyourmot...
- Doyoufindgettingupinthemorningsodifficultthatit's...
- Doyoufindgettingupinthemorningsodifficultthatit's...
- Mostofchildrenenjoy TV,butit'snotgood toomuch.A....
- Doyoufindgettingupinthemorningsodifficultthatit's...
- Two students totheopeningceremonylastFri...
- Low-CostGiftsforMother'sDay GiftNo.I Offertobeyourmot...
- Low-CostGiftsforMother'sDay GiftNo.I Offertobeyourmot...
- Low-CostGiftsforMother'sDay GiftNo.I Offertobeyourmot...