China’s government has 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(指數(shù)).

   **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.

1.According to Graph 1, which of the following cities has the worst air pollution?

    A. Qinhuangdao.          B. Tianjin.       

    C. Qingdao                D. Shenyang.              .

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.   

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’.

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

 

【答案】

 

1.D

2.C

3.D

4.A

【解析】略

 

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