题目内容
Air quality in Beijing was rated as poor______ more than 5 million cars in the capital.
A. except for B. regardless of C. due to D. in spite of
C
【解析】
试题分析：句意：北京的空气质量被认为很差因为在首都有五百多万量汽车。except for除了； regardless of不管；due to因为；in spite of尽管。结合句意选C。
考点: 考查介词短语的用法。
Ch
ina’s government has been trying all measures to reduce pollution in the past few years. Now people can enjoy a fresh environment everywhere. The following two graphs are adopted from the column of “City Information” on the webpage of Beijing Review.
Graph 1: Olympic Cities Air Quality Report
| City | Date | API | Major Pollutant | Air Quality Degree | Quality Condition |
| Beijing | Sep. 8 | 37 | N/A | Ⅰ | Very good |
| Qinhuangdao | Sep. 8 | 52 | PM10 | Ⅱ | Good |
| Qingdao | Sep. 8 | 68 | PM10 | Ⅱ | Good |
| Shanghai | Sep. 8 | 67 | PM10 | Ⅱ | Good |
| Shenyang | Sep. 8 | 88 | PM10 | Ⅱ | Good |
| Tianjin | Sep. 8 | 54 | PM10 | Ⅱ | Good |
Graph 2: Chinese National Standard
| API Values | Levels of health concern | Colors |
| When the API is in this range: | ...air quality co nditions are: | ...as symbolized by this color: |
| 0 to 50 | Very good | Blue |
| 51 to 100 | Good | Green |
| 101 to 150 | Slight pollution | Yellow |
| 151 to 200 | Moderate pollution | Orange |
| 201 to 250 | Medium pollution | Red |
| 251 to 300 | High pollution | Purple |
| 301 to 500 | Hazardous | Brown |
**API stands for Air Pollution Index(指数).
**Particulate matter (PM10) is a major component of air pollution that threatens both our health and our environment. It consists of very small liquid and solid particles floating in the air.
**Sulfur dioxide(SO2) acts as an acid．Inhalation(吸入) results in labored breathing, coughing, or a sore throat and may cause permanent lung damage.
【小题1】According to Graph 1, which of the following cities has the worst air pollution?
| A．Qinhuangdao. | B．Tianjin. |
| C．Qingdao | D．Shenyang. . |
| A．Moderate or high. | B．Moderate or slight. |
| C．Medium or high. | D．Medium or slight. |
| A．With API value below 150 the air is free from being polluted. |
| B．The colors from purple to Yellow indicate the air quality is becoming much worse. |
| C．When there are floating solid particles and dust in the air, it is dangerous pollution. |
| D．On September 8th the color-symbol of Beijing City’s air quality is ‘Blue’. |
| A．there is a large amount of sulfur dioxide in the air |
| B．it is so cold that they may have caught a cold |
| C．they are starting to cough or have a fever |
| D．they must be infected with permanent lung disease |
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.
【小题1】The text mainly discusses the relationship between .
| A．heart problems and air quality |
| B．heart problems and exercising |
| C．heart problems and smoking |
| D．heart problems and fatty food |
| A．relatively high | B．extremely low |
| C．relatively low | D．extremely high |
| A．Eating fatty food has immediate effects on your heart. |
| B．The EPA conducted many studies on air quality. |
| C．Moderate air quality is more harmful than smoking, |
| D．Stricter regulations on pollutants should be made. |
| A．inform | B．persuade | C．describe | D．entertain |
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.
【小题1】The text mainly discusses the relationship between .
| A．heart problems and air quality |
| B．heart problems and exercising |
| C．heart problems and smoking |
| D．heart problems and fatty food |
| A．relatively high | B．extremely low |
| C．relatively low | D．extremely high |
| A．Eating fatty food has immediate effects on your heart. |
| B．The EPA conducted many studies on air quality. |
| C．Moderate air quality is more harmful than smoking, |
| D．Stricter regulations on pollutants should be made. |