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We often read the Air Quality Index(空气质量指标)or AQI reported in the newspaper. The AQI helps us understand what the air quality around us means to our health. The AQI uses colors, numbers and words to tell us about the air. Let’s see what these colors and numbers mean.

AQI colors

AQI Numbers

Health word(s)

What to do

Green

0-50

Good

Just enjoy the clean air!

Yellow

51-100

Moderate

(适中)

Air quality is fine for most people.

Orange

101-150

Unhealthy for sensitive(敏感的) groups

Active children and adults and people with lung(肺) disease should spend less time outdoors

Red

151-200

Unhealthy

People with lung disease and active kids and adults shouldn’t spend too long time outdoors. Everybody else should try to spend less time outside.

Purple

201-300

Very unhealthy

People with lung disease and active kids and adults should not spend any time outdoors. Everybody should try not to go outside.

1.If the weather report says today’s AQI is 39, we can ________.

A. enjoy the clean air       B. spend less time outside

C. try not to go outside       D. stay inside most time

2.If the Air Quality Index is ______, the air quality is good for most people.

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

3.The _______ AQI numbers are, the _______ air quality is.

A. bigger; better    B. bigger; nicer     C. smaller; better     D. smaller; worse

4.We use ________ to tell about the quality of the air .

① color   ②words   ③weather   ④numbers

A. ①②③④    B. ①②③     C. ①②④        D. ②③④

5.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 the best for people.

C. People with lung disease are very sensitive to the air.

D. The AQI can’t help people know the air quality.

七年级英语阅读理解极难题

少年,再来一题如何?
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