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 |
