Do you know the Air Quality Index(空气质量指标)? Do you pay attention to(关注) the AQI report in the newspaper? The AQI helps us understand what the quality of the air around us means to our health. The AQI uses colours, numbers and words to tell us about the air. Let’s see what these colours and numbers mean.
AQI colours | AQI numbers | Health words | What to do |
Green | 0---50 | Good | Just enjoy the clean air! |
Yellow | 51---100 | Moderate(适中的) | Air quality is fine for most people. |
Orange | 101---150 | Unhealthy(不健康的) for sensitive (敏感的) groups | Active children, adults and people with lung disease(肺病) should spend less time outdoors. |
Red | 151---200 | Unhealthy | Active children, adults and people with lung disease shouldn’t spend too much time outdoors. Everybody else should try to spend less time outside. |
Purple | 201---300 | Very unhealthy | Active children, adults and people with lung disease shouldn’t spend any time outdoors. Everybody else should try not to go outside. |
Maroon | 300--- | Very healthy, poisonous(有毒的) | Everybody should not go outside. Stay indoors all the time. |
1.If the weather report says today’s AQI number is 39, we can________.
A. enjoy the clean air
B. spend less time outside
C. try not to go outside
D. stay inside all the time
2.If the AQI colour is purple, people with lung disease________.
A. should spend less time outdoors
B. shouldn’t spend too much time outdoors
C. should not spend any time outdoors
D. should try not to go outside
3.To tell about the quality of the air, which are mentioned(提及到)?
① words ② numbers ③ weather ④ colours
A. ①②③④ B. ①②③ C. ②③④ D.①②④
4.Which of the following is True ?
A. If the AQI number is 140, the AQI colour will be red.
B. If the AQI colour is purple, the air is best for people.
C. People with lung disease are very sensitive to the air.
D. The AQI can’t help people to know the air quality.