As people in Beijing and northern China struggle with severe air pollution this winter,the toxic(有毒的)air is also making life hard for plants and even food crops of China．
"in the last 50 years there has been a 1 6-fold increase in ozone(臭氧)pollution”in the Beijing area，said Hanqin Tian of Auburn University in Alabama,who studies the effects of China's pollution and climate change on plants．
Ozone is particularly harmful to plants because it damages the pores(气孔) on leaves，called stomata,which plants use to regulate how much water evaporates from the leaves．That，in turn，affectS how much water a plant must take up through its roots．Changes in water uptake by plants have been documented in other parts of the world，including the United States，as having major impacts on regional groundwater and surface water supplies．
In studies of the long-term productivity of plants，Hanqin Tian and some of his colleagues show that ozone pollution,along with climate change，has been lowering plant productivity in China,which reduces the amount of carbon and other pollutants that the plants Can absorb to fight all the emissions from the burning offossil fuels．
The worst effects on plants are likely to be in areas where the growing pollution problem is just fairly new, said Arthur Chappelka, also a plant researcher at Auburn University．Some plants are more resistant to pollutants than others，he said，and the plants that are living today in long-polluted urban areas are likely to be only those that are very pollution tolerant．
Away from the cities, however, where crops are necded to feed China’s yast population, the effeets of the growing pollution on crops is a significant concern.
“In some ways it affects the crop production and food securiy of China,”said Hanqin Tian.“Air quality is really important for human health, plants and ecosystem and sustainability.”
The problem is bound to get worse as China continues to develop economically, he said, and so he and other researchers continue to urge the Chinese government to take action to reduce emissions from cars and industries.
【小题1】ozone does harm to plants mainly by ________.
| A．exposing them to strong sunlight |
| B．damaging the structure of their leaves |
| C．adding more pores to the roots |
| D．making the land unfit for the plants to grow |
| A．Ozone pollution has increased 1 6 times in the past 30 years． |
| B．Ozone pollution has lowered plant productivity alone． |
| C．Plants can take in a large amount of carbon and other pollutants． |
| D．The toxic air has few effects on food supply in China． |
| A．Healthy foods are not available in Beijing． |
| B．Some kinds of plants aren’t affected by air pollution． |
| C．Crops in China are hard to feed its large population． |
| D．People should stop developing economically |
| A．care more about developing economy |
| B．reduce the number of cars and industries |
| C．continue to make more researches |
| D．take measures to reduce carbon emissions |
| A．Polluted air damages plants and crops |
| B．Air pollution is becoming more serious |
| C．China’s air pollution and climate changes |
| D．Food security in China |
【小题1】B
【小题2】C
【小题3】B
【小题4】D
【小题5】A
解析试题分析：文章介绍了臭氧和其他有害气体对植物的生长和农作物的产量所具有影响和危害。
【小题1】细节题：根据第三段第一句“Ozone is particularly harmful to plants because it damages the pores(气孔) on leaves”臭氧对植物特别有害因为它破坏叶子气孔。故选B。
【小题2】推理题： 根据第四段最后一句“ the plants Can absorb to fight all the emissions from the burning offossil fuels”植物可以吸收所有排放燃烧矿物燃料。故选C。
【小题3】推理题：根据第四段中“which reduces the amount of carbon and other pollutants that the plants Can absorb to fight all the emissions from the burning offossil fuels．”减少二氧化碳和其他污染物的数量,植物可以吸收对抗所有的排放燃烧矿物燃料。由此可知有些植物不受空气污染影响。故选B。
【小题4】细节题：根据最后一段最后一句“urge the Chinese government to take action to reduce emissions from cars and industries.”敦促中国政府采取行动来减少汽车尾气排放和工业。故选D。
【小题5】主旨题：全文介绍了臭氧和其他有害气体对植物和农作物的影响和危害。故选A。
考点：考查环境保护类阅读
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英语小英雄天天默写系列答案科目：高中英语 来源： 题型：阅读理解
Do you like seahorses? What do you know about them?
The seahorse is actually not a horse but a fish, and much smaller than any regular horse. In general, a seahorse is about an inch long. It is a beautiful fish that likes warm waters, swims upright (直立的), and looks a little like a chess piece.
Seahorses are an unusual kind of animal because the males (雄性) give birth to babies. Mating (交配) takes place in cooler waters on spring and summer nights with a full moon. The females (雌性) put their eggs into the bodies of the males, and the males give birth to baby seahorses.
The seahorse can use each eye separately, which allows it to search for food without moving the rest of its body. Seahorses situate themselves near deep, fast-running channels rich in plankton, a kind of life on which they feed. They can catch food from an inch and a half away. Seahorses can change from gray or black to yellow or purple within seconds to fit in with their surroundings, and in this way escape from most of their enemies.
One of the surprising facts about seahorses for most people is that they are vertebrates (脊椎动物). They can turn and curl freely, and like to swim in pairs connected by their tails. Their tails are powerful, and they can use them to grasp the surrounding seaweed (海藻) to keep themselves from being swept away. So seahorses are usually found in warm water filled with seaweed.
Now that you know all these facts about seahorses, don’t you find them more interesting?
【小题1】We can learn from the passage that seahorses _______.
| A．are beautiful, and live on seaweed |
| B．are as big as regular horses |
| C．live near deep channels |
| D．like to be alone |
| A．male seahorses lay eggs |
| B．seahorses mate in spring or autumn |
| C．male seahorses give birth to babies |
| D．seahorses mate in warmer waters at night |
| A．Their fast speed of swimming. |
| B．Their ability to change colours. |
| C．Their unique eyes. |
| D．Their strong tails. |
| A．Eat. | B．Hold. | C．Make. | D．Handle. |
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科目：高中英语 来源： 题型：阅读理解
Many animals recognize their food because they see it. So do humans. When you see an apple or a piece of chocolate you know that these are things you can eat. You can also use other senses when you choose your food. You may like it because it smells good or because it tastes good You may dislike some types of food because they do not look, smell or taste very nice. Different animals use different senses to find and choose their food. A few animals depend on only one of their senses, while most animals use more than one sense.
Although there are many different types of food, some animals spend their lives eating only one type.The giant panda eats only one particular type of bamboo. Other animals eat only one type of food even when given the choice. A kind of white butterfly will stay on the leaves of a cabbage, even though there are plenty of other vegetables in the garden. However, most animals have a more varied diet. The bear eats fruits and fish. The fox eats small animals, birds and fruits. The diet of these animals will be different depending on the season.
Humans have a very varied diet. We often eat food because we like it and not because it is good for us. In countries such as France and Britain, people eat foods with too much sugar. This makes them overweight, which is bad for their health. Eating too much red meat and animal products, such as butter, can also be bad for the health. Choosing the right food, therefore, has become an area of study in modern life.
【小题1】We can infer from the text that humans and animals ________.
| A．depend on one sense in choosing food |
| B．are not satisfied with their food |
| C．choose food in similar ways. |
| D．eat entirely different food |
| A．The white butterfly. | B．The small bird. |
| C．The bear | D．The fox |
| A．the season changes |
| B．The food color changes |
| C．They move to different places |
| D．They are attracted by different smells. |
| A．food is chosen for a good reason. |
| B．Some people care little about healthy diet |
| C．some people have few choices of food |
| D．French and British food is good. |
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科目：高中英语 来源： 题型：阅读理解
It doesn’t kill germs better than cooler water, but turning tap temperatures high, the US burns carbon equal to the emissions of Barbados.
People typically wash their hands seven times a day in the United States, but they do it at a far higher temperature than is necessary to kill germs, a new study says. The energy waste is equivalent to the fuel use of a small country.
It’s cold and flu season, when many people are concerned about avoiding germs. But forget what you think you know about hand washing, say researchers at Vanderbilt University. Chances are good that how you clean up is not helping you stay healthy; it is helping to make the planet sick.
Amanda R. Carrico, a research assistant professor at the Vanderbilt Institute for Energy and Environment in Tennessee, told National Geographic that hand washing is often “a case where people act in ways that they think are in their best interest, but they in fact have inaccurate beliefs or outdated perceptions.”
Carrico said, “It’s certainly true that heat kills bacteria, but if you were going to use hot water to kill them it would have to be way too hot for you to tolerate.”
She explained that boiling water, 212°F (99.98°C), is sometimes used to kill germs - for example, to clean drinking water that might be polluted with germs. But “hot” water for hand washing is generally within 104°F to 131°F (40°C to 55°C.) At the high end of that range, heat could kill some germs, but the sustained contact that would be required would scald the skin.
Carrico said that after a review of the scientific literature, her team found “no evidence that using hot water that a person could stand would have any benefit in killing bacteria.” Even water as cold as 40°F (4.4°C) appeared to reduce bacteria as well as hotter water, if hands were scrubbed, rinsed（冲洗）and dried properly.
In fact, she noted that hot water can often have an unfavorable effect on hygiene. “Warmer water can harm the skin and affect the protective layer on the outside, which can cause it to be less resistant to bacteria,” said Carrico.
Using hot water to wash hands is therefore unnecessary, as well as wasteful, Carrico said, particularly when it comes to the environment. According to her research, people use warm or hot water 64 percent of the time when they wash their hands. Using that number, Carrico’s team calculated a significant impact on the planet.
“Although the choice of water temperature during a single hand wash may appear minor, when multiplied by the nearly 800 billion hand washes performed by Americans each year, this practice results in more than 6 million metric tons of CO2 equivalent emissions annually,” she said.
That’s roughly equal to the emissions of two coal-fired power plants, or 1,250,000 passenger vehicles, over the course of a year. It’s higher than the greenhouse gas emissions of small countries like El Salvador or Armenia, and is about equivalent to the emissions of Barbados. If all US citizens washed their hands in cooler water, it would be like eliminating the energy-related carbon emissions of 299,700 US homes, or the total annual emissions from the US zinc or lead industries.
The researchers found that close to 70 percent of respondents said they believe that using hot water is more effective than warm, room temperature, or cold water, despite a lack of evidence backing that up, said Carrico. Her study noted research that showed a “strong cognitive（认知的） connection” between water temperature and hygiene in both the United States and Western Europe, compared to other countries, like Japan, where hot water is associated more with comfort than with health.
The researchers published their results in the July 2013 issue of International Journal of Consumer Studies. They recommended washing with water that is at a “comfortable” temperature, which they noted may be warmer in cold months and cooler in hot ones.
【小题1】What does the writer mainly focus on when writing this passage?
| A．Whether hot water helps kill germs effectively in hand washing. |
| B．How hot water contributes to the serious worsening of our planet. |
| C．Why the consumption of hot water is unnecessary and wasteful. |
| D．What the advantages and disadvantages of using hot water are. |
| A．burn | B．improve | C．soften | D．wrinkle |
| A．two coal-fired power plants | B．US zinc or lead industries |
| C．1,250,000 passenger vehicles | D．El Salvador or Armenia |
| A．Universal Science Fiction | B．Science & Discoveries |
| C．Environment & Protection | D．Exploration of America |
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科目：高中英语 来源： 题型：阅读理解
Jerry Morris died on 28 October 2009. He was 99 years old. You have probably never heard of him. He was a professor of public health. More than 50 years ago he produced one of the most famous epidemiological (流行病学) papers of the 20th century.
His study showed that bus conductors were much less likely to die of heart disease than bus drivers. Why? Because the conductors spent their working day walking. It seems obvious now but in the middle of the last century doctors were puzzled by the rising numbers of people who got heart diseases. Jerry Morris found one of the main causes: a sedentary (久坐不动的) lifestyle. He started exercising for a few minutes each day and lived until his 100th year.
If you wish to protect your heart, you have to do more than wander in the garden. The exercise needs to be reasonable. Jogging is not for everyone and a round trip to the gym takes a couple of hours, plus the monthly membership fee is only good value if you visit regularly. The answer is simple: walk.
A half-hour purposeful walk five times a week will lower your risk of heart disease, diabetes and strokes. Older people sometimes feel they have left it too late. But it is never too late to start and there are no upper age limits. Start gently. Take your time: a 15-minute flat walk in the nearest park, four or five times a week. Within a month or so, you are already beginning to protect your heart. Build the walks up. When you can comfortably walk for half an hour in the park, go further: try following rivers and canals.
Regular walkers have their own natural gymnasium. There is no membership fee, just some of the finest scenery in the world. Great Britain is the walker’s gym. When you have followed the rivers and canals, and are enjoying walking for a couple of hours, head for the coast. Once again, build it up slowly. When you are comfortable with long coastal walks, you can think of our national parks.
【小题1】Jerry Morris is mentioned in the first paragraph mainly to __________.
| A．make his epidemiological message known to the public |
| B．praise his research into ways of improving public health |
| C．introduce the topic of doing exercise and keeping healthy |
| D．give an example of a person who lives a healthy and long life |
| A．bus conductors are more likely to die of heart disease than bus drivers. |
| B．doctors in the 1950s knew why heart diseases kept happening to people. |
| C．walking is better than doing sports in a gym because it saves time and money. |
| D．British people love walking because they have free gymnasium with finest scenery. |
| A．Parks are the best place for walking. |
| B．Starters should not push themselves too hard. |
| C．A two-quarter walk a day is suitable for starters. |
| D．People of old age might not be fit enough to start walking. |
| A．Long Life Comes from Walking |
| B．Walking Helps Cure Heart Disease |
| C．A Walk a Day Keeps the Doctors away |
| D．An Hour’s Walk in Nature is Worth Two in the Gym |
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科目：高中英语 来源： 题型：阅读理解
Electrical devices(仪器)could soon use power made by human energy. Scientists say they have developed an experimental device that produces electricity from the physical movement of a person walking , British scientist Max Donelan and other scientists in Canada and the United States developed the device.
The device connects to a person’s knee. As the person walks ,the device captures energy each time the person slows down. To do this ,the device helps with the slowing sown movement of the leg, the movements of the walking person push parts of a small machine that produces electricity. Using the device, an adult walking quickly could produce thirteen watts of electricity in just a minute. Donelan says walking at that speed could produce enough power to operate a laptop computer for six minutes.
There are several possible uses for the device. Developers say it could help people who work in areas without electricity to operate small computers. The device could also he used in hospitals to operate heart pacemakers(起博器), it could even be used to assist in the movement of robotic arms and legs.
The experimental version of the device weighs about one and a half kilograms, but it is too costly for most people to buy, but the researchers hope to make a lighter, less costly version, An improved version should be ready in one year.
The developers hope the device will one day help developing countries; nearly twenty five percent of people around the world live without electric power.
A similar product was invented in 2005 by Larry Rome of the University of Pennsylvania, He created a bag carried on a person’s back that also produces power from walking. The knee device does not produce as much electricity as the bag, but the bag requires the walker to carry a load of twenty to thirty kilograms.
【小题1】. The second paragraph mainly talks about
| A．who developed the device | B．how the device works |
| C．several possible uses for the devices | D．how much electricity the device can produce |
| A．It is too heavy for the walker to bear | B．It is too complex for people to use |
| C．It is too expensive for most people to afford | D．It will slow down one’s walking speed |
| A．produces power without adding more loads to the walker |
| B．can produce more power in a much shorter time |
| C．needs to be equipped with a battery |
| D．can help the walker walk faster |
| A．help housewives operate the washing machine |
| B．make it much easier for us to go online |
| C．produce more electricity than that invented by Larry Rome |
| D．be applied in medical fields to operate heart pacemakers |
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科目：高中英语 来源： 题型：阅读理解
My house is made of wood, glass and stone. It is also made of software.
If you come to visit, you'll probably be surprised when you come in: Someone will give you an electronic PIN to wear. The PIN tells the house who you are and where you are. The house uses this information to give you what you need. When it's dark outside, the PIN turns on the lights near you, and then turns them off as you walk away from them. Music moves with you, too. If the house knows your favorite music, it plays it for you. The music seems to be everywhere, but in fact other people in the house hear different music or no music. If you get a telephone call, only the nearest telephone rings.
Of course, you are also able to want something. There is a home control console (控制台) which is a small machine that turns things on and off around you.
The PIN and the console are new ideas, but they are in fact like many things we have today. If you want to go to a movie, you need a ticket. If I give you the key to my car, you can use my car. The car works for you because you have the key. My house works for you because you wear the PIN or hold the console.
I believe that in ten years from now, most new houses will have the systems that I've put in my house. The systems will probably be even bigger and better than the ones I've got.
I like to try new ideas. I know that some of my ideas will work better than others'. But I hope that one day I will stop thinking of these systems as new, and ask myself instead, ”How did I live without them?”
【小题1】The writer’s house is made of the following EXCEPT_________.
| A．bamboo | B．wood | C．glass | D．software |
| A．An IT expert. | B．A famous doctor. |
| C．A sportsman. | D．An experienced teacher. |
| A．it has your favorite music following you |
| B．you can make a telephone call anywhere |
| C．the writer is able to change his new idea into practice |
| D．it is controlled by computers |
| A．How to develop a new system. | B．The function of the PIN. |
| C．How great the computers are. | D．Easy life in the future. |
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科目：高中英语 来源： 题型：阅读理解
Online Communication
In an age when technology moves faster than most can keep up with, a small group of people still remain in the time of old-fashioned letter. Frankly speaking, I was once certain that traditional letters could never be replaced by other means of communication.
But a story about online communication changed my mind.
An old man, who suffered a lot from Parkinson’s disease, was not able to talk clearly and could hardly write his name. Living totally alone, he managed to keep in touch with nearly all the members of his family. How did he achieve this? He clicked out words on his computer keyboard.
I, therefore, managed to get an E-mail box as soon as the opportunity came. My life changed. E-mail, and all online communication, is something truly different. It has capabilities（能力） that few other products can match.
E-mail is convenient. It takes less time with its fast speed and 24-hour connection. The slow postal service is no match. If you wouldn’t want to have a face-to-face talk with your manager, you might talk with him through E-mail even if you are in the same office.
Naming all the good things about online communication is not easy. But wait. E-mail can be inconvenient. It can waste time and energy. Just think what may happen when you take a short vacation and return to find your e-mail box filled with 200 unread messages. You could easily spend half a day clearing junk ads.
Then, online communication will keep us staying at our computer while it connects us to distant strangers. Once we throw ourselves into the machine, we may forget the human touches we once held so dear. I’m sure there is and always will be a place for the old-fashioned letter, phone call, and face-to-face meeting… even in the world of modern communication.
As I listen to the sound of the modem(调制解调器), I was excited at stepping out to the outside world but, at the same time, I sensed a loss of control over something valuable in my personal life.
【小题1】What is the most probable meaning of the underlined word “junk” in paragraph6?
| A．old and useless | B．New and useful | C．Short but valuable | D．Long but clear |
| A．It should replace old-fashioned letters completely. |
| B．It is perfect and always does good to you. |
| C．It is extremely useful and convenient, but it may be inconvenient or even harmful. |
| D．It does more harm than good. |
| A．The sound of the modem. | B．His own illness. |
| C．The changing of his life. | D．A sick old man’s experience. |
| A．they are convenient and popular though they are slow |
| B．they help to keep the friendly relationship between people |
| C．most people cannot keep up with the development of technology |
| D．modern means of communication does too much harm |
| A．With the help of his computer. | B．By writing letters with his pen. |
| C．By making telephone calls. | D．By visiting them regularly. |
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科目：高中英语 来源： 题型：阅读理解
New research shows sheep are clever
People often make jokes about how dull sheep are, but new research shows they may be cleverer than we think. Researchers at the University of Cambridge discovered that Welsh mountain sheep have brainpower that equals rodents (啮齿动物). Tests found that the sheep can map the area they live in, and some may even be able to plan ahead.
Young fish prefer noisy neighbors
A new study has shown that young fish like to live on reefs with noisy neighbors! Researchers from the universities of Auckland and Bristol found that young fish looking for a home choose areas where other noisy fish live. The scientists produced all kinds of sounds which had been recorded in different natural environments. The young fish seemed to prefer the sounds of natural reefs, complete with noisy animals! The scientists compared the choice to a music fan wandering around at a music festival, choosing to set up a tent closest to the music they like best!
Butterflies are disappearing
A new study has shown that 17 species (物种) of butterfly found in Europe have dropped by 70% in the last 20 years. The information collected from 3,000 sites across 15 countries shows it may be caused by the loss (减少) of grasslands covered with flowers. You can encourage butterflies to come into your garden by planting flowers.
【小题1】What is the passage mainly about?
| A．Some new studies about animals. |
| B．People’s wrong ideas about animals. |
| C．Why the number of animals has dropped. |
| D．The importance of protecting animals. |
| A．are less clever than rodents |
| B．can find their home |
| C．can read maps |
| D．are good planners |
| A．live in a noisy environment |
| B．live in areas close to their parents |
| C．choose the reefs which are quiet |
| D．choose other kinds of fish as neighbors |
| A．The species of grass in grasslands. |
| B．The species of trees in grasslands. |
| C．The number of flowers in grasslands. |
| D．The number of animals in grasslands. |
| A．Geography. | B．Culture. | C．Travel. | D．Nature |
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