Question

Do you know the Air Quality Index（空气质量指标） or AQI report in the newspaper? The AQI helps us understand what the air quality around us means to our health. The AQI uses colours, numbers and words to tell us about the air. What do these colours and numbers mean? Let’s have a look.

AQI Colours	AQI Numbers	Health Word（s）
Green	0—50	Good
Yellow	51—100	Moderate（适中）
Orange	101—150	Unhealthy for sensitive（敏感的） groups
Red	151—200	Unhealthy
Purple	201—300	Very unhealthy

When the AQI colour is green, just enjoy the clean air!Yellow shows the air quality is fine for most people. Orange tells us people with lung disease（肺病） should spend less time outdoors. When the AQI colour is red, people with lung disease and active kids and adults shouldn’t spend too much time outdoors. Everybody else should try to spend less time outside. Purple shows everybody should try not to go outside.

1.The AQI doesn’t use to show the air quality.

A. pictures B. colours C. numbers D. words

2.If the AQI colour is , the air quality is good for most people.

A. orange B. red C. purple D. yellow

3.If the weather report says today’s AQI is 250, we should .

A. enjoy the clean air B. try not to go outside

C. spend more time outside D. stay inside some of the time

Answer 1