A new study links heavy air pollution from coal burning to shorter lives in northern China. Researchers estimate that the half-billion people alive there in the 1990s will live an average of 5 years less than their southern counterparts because they breathed dirtier air.
China itself made the comparison possible: for decades, a now-discontinued government policy provided free coal for heating, but only in the colder north. Researchers found significant differences in both particulate pollution of the air and life expectancy in the two regions.
While previous studies have found that pollution affects human health, "the deeper and ultimately more important question is the impact on life expectancy," said one of the researchers, Michael Greenstone, a professor of environmental economics at Massachusetts Institute of 一Technology. "This study provides a unique setting to answer the life expectancy question because the(heating) policy dramatically changes pollution concentrations（含量），，，Greenstone said in an email. "Further, due to the low rates of migration in China in this period, we can know people's exposure over long time periods," he said.
The policy gave free coal for fuel boilers to heat homes and offices to cities north of the Huai Riv饥which divides China into north and south. It was in effect for much of the 1950-198,0 period of central planning, and, though discontinued after 1980, it has left a legacy（遗留） in the north of heavy coal burning, which releases particulate pollutants into the air that can harm human health. Researchers found no other government policies that treated China's north differently from the south.
The researchers collected data for 90 cities, from 1981 to 2000, on the annual daily average concentration of total suspended（悬浮的）particulates. In China, those are considered to be particulates that are 100 micrometers or less in diameter, sent out from sources including power stations, construction sites and vehicles. Among them, PM2.5 is of especially great health concern because it can go deep into the lungs.
The researchers estimated the impact on life expectancies using death data from 1991-2000． They found that in the north, the concentration of particulates was 184 micrograms per cubic meter一or 55 percent higher than in the south, and life expectancies were 5.5 years lower on average across all age ranges.
【小题1】The main idea of this passage is that＿·
| A．research in China finds air pollution shortened life expectancy |
| B．the government provided free coal for heating in North China |
| C．coal burning causes bad air quality across China |
| D．a new study finds different particulates in South China |
| A．power stations | B．construction sites |
| C．the free heating policy | D．gases from vehicles |
| A．coal is no longer used for heating in North China |
| B．air quality was comparatively better in South China |
| C．southerners burned coals for heating in the 1980s |
| D．people preferred to live in South China after 1980 |
| A．dirty clouds | B．particular smoke |
| C．harmful dust | D．dangerous bacteria |
【小题1】A
【小题2】C
【小题3】B
【小题4】C
解析试题分析：这篇文章讲的是中国的研究发现空气污染缩短人的寿命。北方的人的平均寿命低于南方，就是因为北方的空气污染要比南方严重。
【小题1】主旨题：从全篇文章和第一段的句子：A new study links heavy air pollution from coal burning to shorter lives in northern China.可知这篇文章讲的是中国的研究发现空气污染缩短人的寿命。选A
【小题2】细节题：从文章第四段的句子："This study provides a unique setting to answer the life expectancy question because the (heating) policy dramatically changes pollution concentrations（含量）可知根据Greenstone 所说，免费供暖政策很大程度上导致中国北方的污染含量高的问题。选C
【小题3】推理题：从文章第二段的句子：Researchers found significant differences in both particulate pollution of the air and life expectancy in the two regions.可知中国南方的空气质量相对好一些。选B
【小题4】猜词题：从倒数第二段的句子：In China, those are considered to beparticulates that are 100 micrometers or less in diameter, sent out from sources including powerstations, construction sites and vehicles.可知"particulates" 指的是“有害的灰尘”，选C
考点：考查健康类短文
导学教程高中新课标系列答案科目：高中英语 来源： 题型：阅读理解
Spring is the time to go out and enjoy the weather and scenery. Here are some events to attend in March of 2012 in Oregon!
Oregon Country Fair (OCF), 9 am to 7 pm on March 8-10
OCF first started in 1969, and it’s blossomed into an outstanding example of what a non-profit should be. OCF is an event of shopping & atmosphere, and food ranging from Indian & Afghani cuisine to Italian & France cuisine. Wonderful craft & music never stop. From the time you get there until the time you leave, everyone has a smile on their faces, and they wave and say hello. For tickets, go and visit www. Oregoncountryfair.org.
30th Annual Seaside Beach Volleyball Tournament, 8 am to 6 pm on March 12-14
The Annual Seaside Beach Volleyball Tournament is an amateur tournament that draws amateur volleyball players to the small town of seaside, as well as AVP Team players who are the best volleyball players. In the past years, it has drawn more than 700 teams playing on over 80 volleyball courts. Just go west, and you can’t miss it. It is about 20 miles south of Astoria. To learn more about it, visit the website www. Seasideor.com.
Hood to Coast Relay, 3:30 am to 6:45 pm on March 26-27
The Hood to Coast Relay is a 200-mile-long relay that consists of 15 000 runners and 4 100 volunteers. It’s the largest relay in the world, which goes from Mt. Hood to Pacific Ocean in Seaside, Oregon. People of the Oregon coast fear Hood to Coast, because local towns and streets are flooded. There are audiences cheering riders on, and many people set up stations to give riders water. If you would like to get the race route maps, visit the website www. Hoodtocoast.com.
Other event information
To learn about other events, visit the website www. aadfv. blogspot.com.
【小题1】OCF covers the following EXCEPT _____.
| A．music | B．dishes | C．dance | D．artworks |
| A．In 1982. | B．In 1986. | C．In 1988. | D．In 1992. |
| A．www. Seasideor.com. | B．www. Hoodtocoast.com. |
| C．www. aadfv.blogspot.com. | D．www. Oregoncountryfair.org. |
| A．the relay will last a long period |
| B．they have to offer food and water |
| C．the weather is bad during the relay. |
| D．too many people will go there. |
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科目：高中英语 来源： 题型：阅读理解
Computers can injure you. Most other injuries happen suddenly. For example, if you fall off a bike and break your arms, it happens very quickly. But computer injuries happen slowly.
You probably know how to ride a bike safely. Now learn to use a computer safely.
Your eyes--Too much light can injure your eyes, so never sit too close to a computer screen. Your eyes should be at least 50 centimeters (厘米) from the screen. Remember to look away from it sometimes. This gives your eyes a rest.
When you use a computer, the window should be on your left or your right. If it is behind you, the light will reflect (反射) on the screen. If the window is in front of you, the sun and the screen will both shine into your eyes.
Your hands--Hand injuries can happen because the hands are moved in the same way hundreds of times. If you use a keyboard for a long time, follow this rule: Stop sometimes and exercise your hands and fingers in different ways.
Your back--Some people sit for many hours in front of a computer. If you sit in the wrong way, you can injure your back and your neck. So you should sit with your back straight. The top part of the screen should be in front of your eyes. If you are sitting for a long time, get up every 30 minutes and exercise your arms, legs and neck.
Enjoy your computer, but use it safely.
【小题1】How many kinds of computer injuries are mentioned in this passage?
| A．One. | B．Two | C．Three. | D．Four. |
| A．you sit 60 centimeters away |
| B．you remember to look away |
| C．your eyes are too close to it |
| D．the window is on your left or right |
| A．you work near a window |
| B．you often take rests from working |
| C．you use a keyboard for a long time |
| D．the window is behind you |
| A．You should sit with your back straight while you work on a computer. |
| B．Staying in front of a computer too long may injure your eyes. |
| C．When you work on a computer, your hands almost move in the same way. |
| D．The writer thinks that computer is bad for your health. |
| A．How to protect your eyes |
| B．How to protect your hands |
| C．How to use a computer safely |
| D．How to protect your back |
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科目：高中英语 来源： 题型：阅读理解
Climate change could affect food supplies, water resources, human health and homes.
If greenhouse gas emissions keep increasing at the current rate, global temperature is expected to rise between 2°C and 6°C by 2100. This doesn’t sound much, but a 5°C change is the difference between the current warm period and an ice age.
Global warming leads to other changes in the climate: melting ice, more evaporation(蒸发), changes in geographical patterns of rainfall, heavier downpours separated by longer dry spells, more frequent heat waves, more intense hurricanes, and sea level rise.
These changes could affect crop growth as drought, increased evaporation and shrinking glaciers（冰川）disrupt water supply. Some crops could suffer heat stress. While there may be benefits in some regions, overall climate change is likely to have a negative impact on global food supplies. The impacts of climate change on agriculture will vary widely around the world. A global temperature rise of 1–2 °C is expected to increase food production in some regions, particularly mid-latitude areas. But in tropical regions even a small amount of warming could reduce crop yields. A temperature rise of 3 °C or more could threaten global food resources, as all regions are likely to experience negative impacts overall.
Freshwater resources could also diminish, especially in tropical regions, as rain patterns change and evaporation speeds up. Some communities could lose essential melt water as glaciers disappear, while more intense rainfall and hurricanes could cause more flooding, leading to water pollution and bacterial diseases such as cholera（霍乱）becoming more widespread.
Climate change could lead to a variety of health impacts – both positive and negative. On the negative side, scientists anticipate more cases of malnutrition, heatstroke and waterborne diseases such as cholera. Although some populations will benefit from a reduced risk of cold-related illnesses such as hypothermia, overall a warming world is likely to have negative effects on human health.
Scientists also expect damage to homes and buildings from more intense hurricanes, heavier rainfall and rising sea levels. Climate change is likely to affect infrastructure by increasing the risk of both coastal and inland flooding around the world, owing to a combination of heavier rainfall, rising sea levels and increased storm damage. Homes and buildings could also be affected by the thawing of frozen ground and greater risk of forest fires.
The consequences of climate change will have an impact on people around the world.
【小题1】With global temperature increased by 1–2 °C, _______.
| A．crops yields could be increased in tropical regions |
| B．food production could rise throughout the world |
| C．chances are that food resources would be threatened overall |
| D．mid-latitude areas are likely to experience positive impacts |
| A．lower temperature than normal |
| B．higher temperature than normal |
| C．more cases of malnutrition |
| D．cases of waterborne diseases |
| A．food supplies and buildings |
| B．freshwater resources and homes |
| C．human health and food supplies |
| D．human health and homes |
| A．how global warming leads to changes in the climate |
| B．how climate change affects people worldwide |
| C．why climate change affects our crop growth |
| D．why climate change contributes to all bad results |
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科目：高中英语 来源： 题型：阅读理解
Feel tired lately?Has a doctor said he can’t find anything wrong with you?Perhaps he sends you to a hospital,but all the advanced equipment there shows there is nothing wrong with you.
Then,consider this:you might be in a state of sub-health(亚健康).
Sub-health,also called the third state or gray state,is explained as borderline state between health and disease.
According to the investigation by the National Organization,over 45 percent of sub-health people are middle-aged or elderly.The percentage is even higher among people who work in management positions as well as students around exam-week.
Symptoms(征兆)include a lack of energy,depression,slow reactions,insomnia(失眠),agitation, and poor memory.Other symptoms include shortness of breath,sweating and aching in the waist and legs.
The key to preventing and recovering from sub-health,according to some medical experts,is to form good living habits, alternate work and rest, exercise regularly,and take part in open air activities.
As for meals,people are advised to eat less salt and sugar.They should also eat more fresh vegetables,fruits,fish because they are rich in nutritional elements—vitamins and trace elements(微量元素)—that are important to the body.
Nutrition experts point out that it is not good to eat too much at one meal because it may cause unhealthy changes in the digestive tract(消化道).They also say that a balanced diet is very helpful in avoiding sub-health.
【小题1】When you are in a state of sub-health,you should ________.
| A．stay home and keep silent |
| B．go to a doctor and buy some medicine |
| C．not consider it very serious |
| D．find out the reasons and relax yourself |
| A．they have used up their energy |
| B．they have lost their living hopes |
| C．they have more pressure in life and work |
| D．they have changed their way of life |
| A．keep on working regularly | B．go to sleep a bit earlier |
| C．form good living habits | D．take medicine if necessary |
| A．arrange by turns | B．cause to take place |
| C．make up for | D．keep away from |
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科目：高中英语 来源： 题型：阅读理解
The weather is getting hotter. You are thirsty playing basketball or riding home from school. A cold drink may be just the thing. But be careful what you are drinking. Something that looks cool may not be good for your health. There are plenty of “energy drinks” on the market. Most of them have beautiful colors and cool names. The lists on them tell you they are helpful to your health. Sounds great!
But after a careful check you may find that most energy drinks have lots of caffeine(咖啡碱)in them. These drinks are especially aimed at young people, students, busy people and sports players. Makers sometimes say their drinks make you better at sports and can keep you awake. But be careful not to drink too much. Caffeine makes your heart beat fast. Because of this, the International Olympic Committee(IOC) has limited(限制) its use. Caffeine in most energy drinks is at least as strong as that in a cup of coffee or tea. Possible health dangers have something to do with energy drinks. Just one box of energy drink can make you nervous, have difficulty sleeping and can even cause heart problems. Scientists say that teenagers should be discouraged from taking drinks with a lot of caffeine in them.
【小题1】Many people like drinking energy drinks because of the following EXCEPT that ______.
| A．they have beautiful colors and cool names |
| B．they have lots of caffeine |
| C．they can keep them awake and better at sports |
| D．they are said to be helpful to health |
| A．encouraged | B．stopped | C．helped | D．disliked |
| A．advertisements are important in getting people to buy energy drinks |
| B．energy drinks are helpful to teenagers’ study |
| C．sports players need to drink a lot of energy drinks |
| D．energy drinks are especially aimed at teenagers |
| A．What’s the Use of Energy Drinks? |
| B．Who Can Drink Energy Drinks? |
| C．What’s that in Energy Drinks? |
| D．Why Can’t We Buy Energy Drinks? |
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科目：高中英语 来源： 题型：阅读理解
Is crying good therapy? Experts say yes. Having a good weep at the weekend is becoming more popular among office workers in China.
“I need to cry to let my feeling out,” said 22-year-old Guo Meng, a smart-looking young woman. “I remember one day when I got home I felt so down but I had no one to talk to, so I just curled up(蜷缩) with my teddy bear and cried myself to sleep,” Guo said. The next day, she said, she felt much better and life seemed not so bad after all.
Because crying is taken as a sign of weakness, people make a great show of being strong and not displaying emotion. Psychologists and medical practitioners agree that crying is beneficial for mental health but people still regard it as a sign of failure and bottle up their feelings. A famous Chinese author once said to cry is normal, and even brave. Those who display their emotions can deal with their troubles bravely after the tears dry, while those who soldier on let problems fester（恶化）.
In the Chaoyang district of Beijing, there is a special place for people to cry their sadness out. It is called “Cry Bar”. On the door of each of its “cry rooms” there is a saying encouraging people to let the tears flow freely.
“Crying is a kind of therapy, but it needs some direction,” said Milulu, a psychologist.
“People should realize the point of crying is to relieve pressure, but some of the young people who come to the Cry Bar simply sit and weep. The purpose of crying is to make it easier to improve your life after the tears dry, not to get lost in bad memories.”
Crying is only one way of relieving pressure, and we need to face problems squarely and solve them once the tears have dried, said Mululu.
【小题1】Crying _____ made Guo Meng feel better.
| A．with some friend | B．all the night with a toy |
| C．during her sleep | D．in bed before sleep |
| A．get rid of their sadness | B．bottle up their feelings |
| C．act on psychologists’ advice | D．face their troubles bravely |
| A．Think of every sad experience they’ve had and cry |
| B．Keep crying as loudly as long as possible. |
| C．Satisfy any desire to cry and weep until it is gone. |
| D．Hold back their tears until they can’t help but cry. |
| A．is to relieve pressure | B．must help to solve problems |
| C．means facing problems squarely | D．can’t weaken sad feelings. |
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科目：高中英语 来源： 题型：阅读理解
Good health is the most valuable thing a person can have but one cannot take good health for granted .It is important to remember that the body needs proper care in order to be healthy. There are three things that a person can do to help stay in good shape, eat right food, get enough sleep, and exercise regularly.
Proper nutrition is important for good health. Your body cannot work well unless it receives the proper kind“fuel"．Don't eat too much food with lots of sugar and fat, Eat plenty of foods high in protein, like meat fish eggs and nuts. Vegetables and fruits are very important because they provide necessary vitamins and minerals. However don't overeat It is not helpful to be overweight
Getting the proper amount of sleep is also important. If you don't get enough sleep, you feel tired and easily get angry. You have no energy. Over a long period of time a little amount of sleep may even result In a change of personality（人的个性)．Be sure to allow yourself from seven to nine hours of sleep each ,If you do, your body will feel strong and refreshed ,and your mind will be sharp．
Finally, get plenty of exercise Exercise firms the body, strengthens the muscles, and prevents you from gaining weight It also improves your heart and lungs. If you follow a regular exercise program, you will probably increase your life-span（寿命)．An kind of exercise is good. Most sports excellent for keeping the body in good shapes: basketball, swimming, bicycling, running and so on. Sports are not only good for your body, but they are enjoyable and interesting, too.
If everybody were to eat the right foods, get plenty of sleep and exercise regularly, the world would be a happier and healthier place. We would all live to be much older and wiser.
【小题1】In order to keep good health______.
| A．we should eat a lot of sweets |
| B．one needs a large amount of fat |
| C．we must try to sleep now and then |
| D．people should eat according to the foods nutrition |
| A． can keep healthy | B． is no good for you |
| C． gets you more energy | D． will keep your personality |
| A． how to eat | B． what to eat |
| C． how to keep healthy | D． the importance of doing exercise |
| A． Eating and Exercising | B． How Vitamins Work in Man's Body |
| C． Staying Healthy | D． Sleeping Well |
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科目：高中英语 来源： 题型：阅读理解
“Our aim is to take our art to the world and make people understand what it is to move,” said David Belle, the founder of parkour (跑酷).
Do you love running? It is a good exercise, yet many people find it boring. But what about making your morning jog a creative one? Like jumping from walls and over gaps, and ground rolls? Just like the James Bond in the movie Casino Royale? Bond jumps down from a roof to a windowsill and then runs several blocks over obstacles on the way. It is just because of Bond's wonderful performances that the sport has become popular worldwide.
Yes, that's parkour, an extreme street sport aimed at moving from one point to another as quickly as possible, getting over all the obstacles in the path using only the abilities of the human body. Parkour is considered an extreme sport. As its participants dash around a city, they may jump over fences, run up walls and even move from rooftop to rooftop.
Parkour can be just as exciting and charming as it sounds, but its participants see parkour much more than that.
Overcoming all the obstacles on the course and in life is part of the philosophy behind parkour. This is the same as life. You must determine your destination, go straight, jump over all the barriers as if in parkour and never fall back from them in your life, to reach the destination successfully. A parkour lover said, "I love parkour because its philosophy has become my life, my way to do everything."
Another philosophy we've learnt from parkour is freedom. It can be done by anyone, at any time, anywhere in the world. It is a kind of expression of trust in yourself that you earn energy and confidence.
【小题1】Parkour has become popular throughout the world because of________.
| A．its founder, David Belle | B．the film, Casino Royale |
| C．its risks and tricks | D．the varieties of participants |
| A．streets | B．objects | C．barriers | D．roofs |
| A．It challenges human abilities. | B．It is a good but boring sport. |
| C．It needs special training. | D．It is a team sport.. |
| A．reach the destination as soon as possible |
| B．choose the easiest way |
| C．challenge extremes |
| D．consider safety first |
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