Life is to be enjoyed. There’s no point in giving up something you enjoy unless you get something back that’s even better. When people eat more healthfully, exercise, quit smoking, and manage stress better, they find that they feel so much better that it reconstructs the reason for making these changes from fear of dying to joy of living. The latest studies show that when you exercise and eat right:
YOUR BRAIN receives more blood flow and oxygen, so you become smarter, think more clearly, have more energy, and need less sleep. Two studies showed that just walking for three hours per week for only three months caused so many new neurons (神经细胞) to grow that it actually increased the size of people’s brains!
YOUR FACE receives more blood flow, so your skin glows more and wrinkles less. You look younger and more attractive. In contrast, an unhealthy diet, chronic emotional stress and smoking reduce blood flow to your face so you age more quickly. Smoking accelerates aging because nicotine causes your arteries (动脉) to narrow down, which decreases blood flow to your face and makes it wrinkle earlier. This is why smokers look years older than they really are.
YOUR GENES change. In May, a study was published in the Proceedings of the National Academy of Sciences showing that changing your lifestyle changes your genes.
YOUR TELOMERES (染色体端粒) get longer. Telomeres are the ends of our chromosomes (染色体) that control how long we live. As telomeres become shorter, then cells age more quickly, thus shortening your life.
Besides, one of the most interesting findings in the study was that the mothers’ awareness of stress was more important than what was really occurring in their lives. The researchers gave the women a questionnaire and asked them to rate on a three-point scale how stressed they felt each day, and how out of control their lives felt to them. The women who were aware that they were under heavy stress had significantly shortened and damaged telomeres compared with those who felt more relaxed. On the contrary, some of the women who felt relaxed despite raising a disabled child had more normal-appearing telomeres.
In other words, if you feel stressed, you are stressed; if you feel fine, you are fine.
【小题1】Which of the following are good for lengthening one’s life, according to the passage?
① eat healthy food ② drink plenty of water ③ take exercise ④ get up early
⑤ go to sleep early ⑥ release one’s stress
| A．①③⑥ | B．①②③ | C．①⑤⑥ | D．③④⑥ |
| A．your skin becomes white as there is plenty of sunshine |
| B．your skin becomes smooth as there is much blood in it |
| C．your skin looks pink as you are healthy |
| D．your skin becomes soft as you exercise enough |
| A．brains becoming cleverer | B．faces having fewer wrinkles |
| C．arteries turning narrower | D．genes being changed |
| A．mothers will have more damaged telomeres if they raise a disabled child |
| B．mothers don’t know how to handle stress effectively |
| C．some women were asked to fill out a questionnaire about educating children |
| D．mothers’ positive attitudes are the key to managing their stress |
| A．Eat better, live better | B．Feel better, live longer |
| C．Less stress, fewer diseases | D．Smoke more, age sooner |
【小题1】A
【小题2】C
【小题3】C
【小题4】D
【小题5】B
解析试题分析：最新研究表明适当的锻炼和正确的饮食和愉悦的心情能够带来很多好处。比如一个人的大脑会有更多的血液流过，带来更多的氧气，这样人就会思维活跃，精力充沛；此外。面部也会减少皱纹，看上去更年轻漂亮。而不恰当的饮食，不良情绪和吸烟会加速一个人的衰老和死亡。
【小题1】A细节理解题。根据文章第一段When people eat more healthfully, exercise, quit smoking, and manage stress better, they find that they feel so much better that…..可知A选项正确。
【小题2】C词义猜测题。根据下文You look younger and more attractive.可推测出如果一个人看上去年轻漂亮的话，皮肤应该是健康的颜色，由此可知C选项正确。
【小题3】C细节理解题。根据文章第三段Smoking accelerates aging because nicotine causes your arteries (动脉) to narrow down,可知是吸烟这种不健康的习惯会让动脉血管变窄，所以正确答案为C。
【小题4】D细节理解题。根据文中On the contrary, some of the women who felt relaxed despite raising a disabled child had more normal-appearing telomeres.可知答案选D。
【小题5】B主旨大意题。文章开头提出life is to be enjoyed，然后讲述健康的饮食，适当的锻炼和对压力的正确处理给人带来的好处，最后进行总结概括In other words, if you feel stressed, you are stressed; if you feel fine, you are fine.由此可知文章的最佳标题为B。
考点：考查科学知识类短文阅读。
学练快车道口算心算速算天天练系列答案科目：高中英语 来源： 题型：阅读理解
Look, this is the first plane in the world to be created using the new technology of “3D printing”. The airplane was built using only a computer—but it can fly at a speed of 100mph and has a two-meter wingspan.
It was produced using a special nylon laser printer that builds up something layer-by-layer. The parts were made separately and attached using a “snap fit” technique so the aircraft could be put together without tools in minutes.
No fasteners at all were used in the manufacture of the plane. Unmanned and electrically powered, the plane can travel in near silence and is also equipped with a small autopilot system. The special production process used is known as “laser sintering(激光烧结)”and allows the designers to create shapes and structures that would normally include costly manufacturing techniques. This technology allows a highly-tailored aircraft to be developed from your own design to first flight in days, while using traditional materials and techniques would take months. And because no tooling is required for manufacture, major changes to the shape and scale of the aircraft can be made with no extra cost.
Professor Jim Scanlon, who led the team, said, “The process allows the design team to revisit historical techniques and ideas that would have been too expensive using traditional manufacturing.” He added, “This form of structure is very firm and lightweight, but very complex. If it was manufactured traditionally it would require a large number of individually tailored parts that would have to be connected or fastened at great expense.”
The new printed plane is known as the Southampton University Laser Sintered Aircraft—or SULSA for short—and is part of a wider project using cutting-edge manufacturing techniques. The University of Southampton has been at the leading position of Unmanned Aerial Vehicle development since the early 1990s.
【小题1】Which of the following would be the best title for the text?
A. Revolutionary Breakthrough of 3D Printer
Scientists Create Aircraft with High Speed
C. New Designed Airplane with New Techniques.
D. The World’s first 3-D printed Airplane, SULSA
【小题2】How could the plane work while flying?
| A．It should be controlled by an autopilot system. |
| B．It should be controlled by “laser sintering”. |
| C．A pilot controls it using a remote control. |
| D．A pilot with high techniques controlled it. |
| A．it produces little noise while flying |
| B．it is manufactured in quite a short time |
| C．it only requires simple and cheap tools |
| D．it needn’t extra cost if changes are made |
| A．produce firmer and lighter real planes easily |
| B．connect and fasten tailor parts for real planes |
| C．copy earlier planes to study their techniques |
| D．find differences by studying the traditional ones |
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科目：高中英语 来源： 题型：阅读理解
The year is 2094. It has been announced that a comet is heading towards the Earth. Most of it will miss our planet, but two pieces will probably hit the southern half of the Earth.
On 17 July, a piece four kilometers wide enters the Earth’s atmosphere with a massive explosion. About half of the piece is destroyed, but the remaining part hits the South Atlantic at 200 times the speed of sound. The sea boils and a huge hole is made in the sea bed. Huge waves are created and spread outwards from the hole. The wall of water, a kilometer high, rushes towards southern Africa at 800 kilometers an hour. Cities on the African coast are totally destroyed and millions of people drowned.
Before the waves reach South America, the second piece of the comet lands in Argentina. Earthquakes and volcanoes are set off in the Andes Mountains. The shock waves move north into California and all around the Pacific Ocean. The cities of Los Angeles, San Francisco and Tokyo are completely destroyed by earthquakes. Millions of people in the southern half of the Earth are already dead, but the north won’t escape for long. Because of the explosions, the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. The sun won’t be seen again for many years. Wars break out as countries fight for food. A year later, no more than 10 million people remain alive.
Could it really happen? In fact, it has already happened more than once in the history of the Earth. The dinosaurs were on the Earth for over 160 million years. Then 65 million years ago they suddenly disappeared. Many scientists believe that the Earth was hit by a piece of object in space. The dinosaurs couldn’t live through the cold climate that followed and they died out. Will we meet the same end?
【小题1】What is mainly described in the passage?
| A．A historic discovery. | B．An event of imagination. |
| C．A research on space. | D．A scientific adventure. |
| A．an earthquake | B．damages to cities |
| C．an Earth explosion | D．huge waves |
| A．Because the land is covered with water. |
| B．Because the light and heat from the sun can not reach the Earth. |
| C．Because people there can not live at the temperature of zero. |
| D．Because wars break out among countries. |
| A．animals could not live in the cold climate |
| B．what happened 65 million years ago was an invented story |
| C．the human beings will die out in 2094 |
| D．the Earth could be hit by other objects in space |
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科目：高中英语 来源： 题型：阅读理解
People have always been dreaming of going to the moon. As long as the year 1901, H. G. Wells, an English writer, wrote a book vividly describing a trip to the moon. On landing there, the explorers discovered that the moon was full of underground cities. Words failed to express their surprise when they spotted so many “moon people”. The “moon people” felt even more surprised. “Why,” they asked, “are you traveling to outer space when you don’t even use your inner space?”
H. G. Wells could only imagine a travel to the moon. In 1969, human beings really left their footsteps on the moon. People today know that there are no underground cities on the moon. However, the question that the “moon people” asked is still an interesting one. A growing number of scientists are seriously thinking about it.
Underground systems are already in place. Many cities have underground car parks. In some cities, such as Tokyo, Seoul and Montreal, there are large underground shopping areas. The “Channel”, a tunnel connecting England and France, is now complete.
But what about underground cities? Japan’s Taisei Corporation is designing a network of underground systems, called “Alice Cities”. The designers imagine using surface space for public parks and using underground space for flats, offices, shopping, and so on. A solar dome (太阳能穹顶) would cover the whole city.
Supporters of underground development argue that building down rather than building up is a good way to use the earth’s space. The space, they say, can be used for farms, parks, gardens, and wilderness. H. G. Wells’ “moon people” would second it. Would you?
【小题1】The explorers in H. G. Well’s story were surprised to find that the “moon people” .
| A．knew so much about the earth |
| B．understood their language |
| C．lived in underground cities |
| D．were advanced in technology |
| A．Discovering the moon’s inner space |
| B．Using the earth’s inner space |
| C．Meeting the “moon people” again |
| D．Traveling to outer space |
| A．Offices, shopping areas, power stations. |
| B．Tunnels, car parks, shopping areas. |
| C．Gardens, car parks, power stations. |
| D．Tunnels, gardens, offices. |
| A．H. G. Wells once went to moon himself. |
| B．Underground cities are more comfortable. |
| C．The solar dome is a necessary part of underground cities. |
| D．More underground systems will be in place in 2013. |
| A．Alice Cities — cities of the future |
| B．Space travel with H. G. Wells |
| C．Enjoy living underground |
| D．Building down, not up |
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科目：高中英语 来源： 题型：阅读理解
Fear may be felt in the heart as well as in the head, according to a study that has found a link between the cycles of a beating heart and the chance of someone feeling fear.
Tests on healthy volunteers found that they were more likely to feel a sense of fear at the moment when their hearts are contracting (收缩) and pumping blood around their bodies, compared with the point when the heartbeat is relaxed. Scientists say the results suggest that the heart is able to influence how the brain responds to a fearful event, depending on which point it is at in its regular cycle of contraction and relaxation.
Sarah Garfinkel at the Brighton and Sussex Medical School said: "Our study shows for the first time that the way in which we deal with fear is different depending on when we see fearful pictures in relation to our heart."
The study tested 20 healthy volunteers on their reactions（反应）to fear as they were shown pictures of fearful faces. Dr Garfinkel said, "The study showed that fearful faces are better noticed when the heart is pumping than when it is relaxed. Thus our hearts can also affect what we see and what we don't see - and guide whether we see fear."
To further understand this relationship, the scientists also used a brain scanner (扫描仪) to show how the brain influences the way the heart changes a person's feeling of fear.
"We have found an important mechanism by which the heart and brain ‘speak’ to each other to change our feelings and reduce fear," Dr Garfinkel said.
"We hope that by increasing our understanding about how fear is dealt with and ways that it could be reduced, we may be able to develop more successful treatments for anxiety disorders, and also for those who may be suffering from serious stress disorder."
【小题1】What is the finding of the study?
| A．One's heart affects how he feels fear. |
| B．Fear is a result of one's relaxed heartbeat. |
| C．Fear has something to do with one's health. |
| D．One’s fast heartbeats are likely to cause fear. |
| A．volunteers' heartbeats when they saw terrible pictures |
| B．the time volunteers saw fearful pictures and their health conditions |
| C．volunteers' reactions to horrible pictures and data from their brain scans |
| D．different pictures shown to volunteers and their heart-brain communication |
| A．Order. | B．System. | C．Machine. | D．Treatment. |
| A．treating anxiety and stress better |
| B．explaining the cycle of fear and anxiety |
| C．finding the key to the heart-brain communication |
| D．understanding different fears in our hearts and heads |
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科目：高中英语 来源： 题型：阅读理解
Plants are flowering faster than scientists predict in reaction to climate change, which could have long damaging effects on food chains and ecosystems.
“Global warming is having a great effect on hundreds of plant and animal species around the world, changing some living patterns.” scientists say.
Increased carbon dioxide (CO2) in the air from burning coal and oil can have an effect on how plants produce oxygen, while higher temperatures and changeable rainfall patterns can change their patterns of growth.
“Predicting species’ reaction to climate change is a major challenge in ecology,” said the researchers of several U.S. Universities. They said plants had been the key object of study because their reaction to climate change could have an effect on food chains and ecosystem services.
The study, published on the Nature website, uses the findings from plant life cycle studies and experiments across four continents and 1,634 species. It found that some experiments had underestimated the speed of flowering by 8.5 times and leafing by 4 times.
“Across all species, the experiments underestimated the speed of the advance—for both leafing and flowering—that results from temperature increases,” the study said.
“The design of future experiments may need to be improved to better predict how plants will react to climate change,” it said.
Plants are necessary for life on the Earth. They are the base of the food chain, using photosynthesis (光合作用) to produce sugar from carbon dioxide and water. They let out oxygen which is needed by nearly every organism on the planet.
Scientists believe the world’s average temperature has risen by about 0.8 ℃ since 1900, and nearly 0.2 ℃ every ten years since 1979.
So far, efforts to cut emissions of planet-warming greenhouse gases are not seen as enough to prevent the Earth heating up beyond 2 ℃ this century—a point scientists say will bring the danger of a changeable climate in which weather extremes are common, leading to drought, floods, crop failures and rising sea levels.
【小题1】What is the key information the author wants to give in Paragraph 1?
| A．The increasing speed of flowering is beyond scientists’ expectation. |
| B．Climate change leads to the change of food production patterns. |
| C．Plants’ reaction to weather could have damaging effects on ecosystem. |
| D．Food chains have been seriously damaged because of weather. |
| A．scientists should improve the design of the experiments |
| B．plants’ flowering is 8.5 times faster than leafing |
| C．there are 1,634 plant species on the four continents |
| D．the experiments failed to predict how plants react to climate change |
| A．they can prove the climate change clearly |
| B．they are very important in the food chains |
| C．they play a leading role in reducing global warming |
| D．they are growing and flowering much faster than before |
| A．It has risen nearly 0.2 ℃ since 1979. |
| B．It is 0.8 ℃ higher in 1979 than that of 1990. |
| C．It needs to be controlled within 2 ℃ in this century. |
| D．Its change will lead to weather extremes. |
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科目：高中英语 来源： 题型：阅读理解
The first newspaper was written by hand and put up on walls in public places. The earliest daily newspaper was started in Rome in 59 BC. In the 700s the world’s first printed newspaper was published. Europe didn’t have a regularly printed newspaper until 1609, when one was started in Germany.
The first regularly published newspaper in English was printed in Amsterdam in 1620. In 1621, an English newspaper was started in London and was published once a week. The first daily English newspaper was the Daily Courant, which came out in March 1702.
In 1690, Benjamin Harris printed the first American newspaper in Boston .But not long after it was first published, the government stopped the paper. In 1704, John Campbell started the Boston Newspaper, the first newspaper published daily in the American colonies（殖民地）. By 1760, the colonies had more than thirty daily newspapers.There are now about 1, 800 daily papers in the United States.
Today, as a group, newspapers in English have the largest circulation (发行量)in the world .But the largest circulation for a newspaper is that of the Japanese newspaper Asahi Shimbun . It sells more than eleven million copies every year.
【小题1】The first regularly printed European newspaper started in ________.
| A．Rome in 59 BC | B．Germany in 1609 |
| C．Amsterdam in 1620 | D．England in 1621 |
| A．1620 | B．1621 | C．1590 | D．1702 |
| A．History of newspapers |
| B．History of daily newspapers |
| C．The beginning of newspapers |
| D．On reading newspapers |
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科目：高中英语 来源： 题型：阅读理解
Over a period of time, many habitats (栖息地)change with respect to the types of plants and animals that live there. This change is known as succession.
Succession occurs because plants and animals cause a change in the environment in which they live. The first weeds and grasses that appear on a bare field, for example, change the environment by shielding the soil from direct sunlight. As these plants spread, the ground becomes cooler and more moist than it was originally. Thus, the environment at the ground surface has been changed. The new surface conditions favor the sprouting（产生）of shrubs. As shrubs grow, they kill the grasses by preventing light from reaching them and also enhance (增加)the soil. Pine seedlings (苗)soon take hold and as they grow, they in turn shade out the shrubs. They are not able to shade out oak and hickory (山核桃)seedlings, however, that have found the forest floor suitable. These seedlings grew into large trees that eventually shade out the pines.
【小题1】The best title of this passage is _____.
| A．The Importance of Weeds and Grasses |
| B．The Success of Oak and Hickory |
| C．How Environmental Habitats Change |
| D．Animal and Plant Habitats |
| A．oak and hickory trees grow taller than pines |
| B．weeds and grasses prefer cold climate |
| C．pines and grasses can exist together |
| D．birds encourage the growth of shrubs |
| A．A forest cut down to build an airport. |
| B．A flood washing away a crop of wheat |
| C．Wild flowers growing in an unused parking lot |
| D．Animals being tamed (驯服)by children |
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科目：高中英语 来源： 题型：阅读理解
Watercress is positively packed with healthy vitamins and minerals. The writings of both the Romans and the Ancient Greeks record the consumption of watercress by all classes. Hippocrates, “the father of medicine”, was so convinced that watercress was a great healer that he built his first hospital next to a stream so that he could grow a plentiful supply of the shiny green leaves for his patients. The Romans chewed watercress in large quantities, believing that it would cure baldness. They, too, looked with favor on watercress as a salad.
Watercress sandwiches were traditionally a breakfast item in nineteenth-century Europe. The most basic type of watercress sandwich has two pieces of white bread with a mixture of butter and watercress greens . A nickname(绰号)for the vegetable, in fact, was “poor man’s bread”, because watercress was often eaten on its own for breakfast by families that could not afford the bread to go with it.
Watercress is a member of the mustard(芥菜) family. It contains vitamins C(66mg per 100g), K and A, and is also a valuable source of minerals such as iron, potassium, copper and calcium. The mustard oils in its silky leaves and stems(茎)contain an ingredient known as PEITC. Recent research has proved that PEITC can prevent the growth of cancer cells and, in some cases, actually destroy them.
The best watercress has silky green leaves without any marks and has undamaged stems, The older the plant, the darker are its leaves and the thicker its stems. This means a higher concentration of oils and vitamins. Young watercress, on the other hand, may be harvested after only twenty-eight days growth and has a milder taste. It is best to eat watercress fresh and raw , to keep more of its valuable nutrients, but it can be lightly cooked and used as an alternative to spinach—another dark green vegetable—in various recipes. From soups to salads, watercress is now considered around the world as a natural and healthy super food.
【小题1】From paragraph 1, we can learn that________.
| A．watercress is usually grown in wet areas |
| B．the ancient Greeks only used watercress for medicine |
| C．watercress is the most ancient vegetable known to man |
| D．the Romans rubbed watercress on their heads to cure baldness |
| A．butter | B．watercress | C．breakfast | D．bread |
| A．has lighter green leaves |
| B．contains more minerals |
| C．is better for medical use |
| D．is more suitable for eating raw |
| A．The history of watercress | B．watrcress, a medicinal plant |
| C．Watercress, the amazing food | D．New findings about watercress |
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