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 | Air Quality | Quality |
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(指数).
**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
In the United States, 30 percent of the people have a “weight problem”. To many people the cause is obvious (明显的): they eat too much. But scientific evidence (证据) does little to support this idea. Going back to America of 1910, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less, and didn’t watch television.
Several modern studies, moreover, have shown that fatter people don’t eat more on average than thinner people. A 1979 study of 3,545 London office workers showed that fat people eat less than slim (苗条的) people.
Studies also show that slim people are more active than fat people. A study by a research group at Stanford University found the following interesting facts:
The more the man ran, the greater loss of the body fat.
The more they ran, the greater increase in food intake.
Thus, those who ran the most ate the most, yet lost the greatest amount of body fat.
1.Nowadays many Americans have the problem that ______.
A.they are too slim B.they work too hard
C.they are too fat D.they lose too much body fat
2.According to the passage, how many people in 900 Americans have a “weight problem”?
A.150. B.300. C.600. D.270.
3.The Americans in 1910 ________.
A.ate more food and had more physical activities B.ate less food but had more physical activities
C.ate less food and had less physical activities D.had more problems
—Could you please make sure ________?
—OK, I will call him up at once.
A.what does your boss need
B.when your boss would arrive here
C.your boss will leave earlier
D.if your boss will go to the meeting
Mr.Smith told his son _______the football match because of the exam.
A.not to watch B.to not watch C.not watching D.doesn't watch
The children________.
A.must take good care of B.must be taken good care
C.must take good care D.must be taken good care of
—Mum, I can’t find my shoes.
—Hurry up ! Your father ________ for us.
A.is waiting B.waited C.waits D.wait
