Question

Have you ever paid attention (注意)to 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 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 for sensitive(敏感的) groups	Active children and adults and people with lung (肺) disease (疾病) 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 else 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 (糟糕)

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

① colours ② words ③ weather ④ numbers

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.

Answer

1.A

2.D

3.C

4.C

5.C

【解析】

试题分析：这篇短文主要介绍了空气质量指标帮助我们了解我们周围的空气质量对我们的健康的影响。空气质量通过颜色，数据，语言来告诉我们空气的情况。

1.A细节理解题。根据数值是0-50的建议Just enjoy the clean air 故选A。

2.D细节理解题。根据短文Air quality is fine for most people所在的表格可知是黄色，故选D

3.C推理判断题。通过观察表格的数据和对应的健康情况，可知数据越小空气质量越好，数据越大，空气质量越差，故选C.

4.C归纳理解题。根据表格的介绍可知通过AQI colours，AQI numbers，Health words可知空气质量。故选C。

5.

考点：科普类短文阅读。