We have 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 conditions 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 | Notes:**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. | 小题2:If your city is symbolized by either red or purple, the pollution in your city is____.A.Moderate or high. | B.Moderate or slight. | C.Medium or high. | D.Medium or slight. | 小题3:Which of the following statements is TURE?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’. | 小题4:When more citizens are beginning to have labored breathing soon after they are in the open air, it suggests that____.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 |
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