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 |
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 |
A.Qinhuangdao. | B.Tianjin. |
C.Qingdao | D.Shenyang. . |
A.Moderate or high. | B.Moderate or slight. |
C.Medium or high. | D.Medium or slight. |
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’. |
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 |
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A.he told the truth that he wanted a smaller one |
B.he knew how to make his mother happy from her answer |
C.elder brother should of course have the bigger one |
D.his mother loved him more than she loved the younger brother |
A.it’s wrong to ask children to choose apples when they are not old enough |
B.it’s important to make children aware that no matter what they want, they must pay work |
C.it’s wrong to ask children not to always think of themselves |
D.it’s always necessary to have a competition when we give children apple |
A.organizing it in the order of time |
B.making a comparison between two men |
C.providing some scientific information |
D.describing it in the order of space |
A.we should always try to win competitions which can bring us a lot |
B.in order to get what we want, we should play hard |
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D.giving children apples will lead them to become criminals |
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A.they give them wood and other products | B.they give them shade |
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A.the frogs were easy money |
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C.they wanted to please the visitors |
D.the frogs made too much noise |
A.the crops didn’t do well |
B.there were too many insects |
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A. enjoy the beautiful scenery of the whole town |
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C. inspire her to find out another way to solve her problem |
D. help her forget some unpleasant things earlier that day |
A. Do something delicious for lunch. |
B. Taste her awful lunch. |
C. Dismiss the mad cook. |
D. Speak to the school about lunch. |
A. the cook agreed to serve the soup to the writer’s mother. |
B. the author’s mother was angry with the cook. |
C. her father persuaded her mother successfully. |
D. the method the author thought of was effective. |
A. It was delicious. | B. It wasn’t so bad as the author said. |
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A.Two | B.Three | C.Four | D.One |
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