It is often a complex and tiring task to live a healthy life, but that isn’t always the case.
Over the last few years, a number of studies have shown that the benefits of the increased range of movement students experience when using standing desks are surprisingly broad.
The benefits of bringing standing desks into classrooms are obvious.
Sitting isn’t horrible. It isn’t a thing we should never do. The problem is that we do it too much, and so do our children, which makes children less likely to succeed and keep healthy.
| A．It is time for us to stand up to stay healthy. |
| B．But it is important for children to use them gradually. |
| C．Children spend most of their school day sitting at desks. |
| D．Thus it’s necessary to break up the sitting with standing desks. |
| E．Something as cheap as a desk could be making a major difference. |
| F．Right now there is something we can do easily to keep our children healthy. |
| G．For example, they help students keep fit and avoid putting on too much weight. |
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As recently as fifty years ago, as the rich and famous began opting for elective cosmetic surgery, the subject was whispered about and considered taboo. Celebrities（名人） would disappear for months and then appear after secret cosmetic surgery looking younger,prettier, and thinner. Over time, cosmetic surgery has become accepted and even encouraged in some circles. Today there are even television reality shows about it.
Some of the more popular forms of cosmetic surgery are liposuction(抽脂术), in which excessive fat is sucked out of the body with a tube and vacuum device; laser facial resurfacing, which smooths lines on the face around the eyes and mouth and eliminates facial blemishes（瑕疵); and hair replacement surgery, which fills in balding areas using a patient's own hair. There are many more forms of cosmetic surgery, including variations of these.
Anyone interested in cosmetic surgery should consider the risks and remember that it is, ultimately, surgery. Not all procedures come out exactly the way doctors and patients foresee, and recovery is just like any other surgery, complete with pain and the possibility of infection(感染). While cosmetic surgery is an option, patients should choose doctors wisely, obtain several references, and keep realistic expectations.
1. Which kind of person doesn't need a cosmetic surgery?
| A．A person who suffers a damaging burn. |
| B．A person who wants to reshape nose. |
| C．A person who needs to smooth out wrinkles. |
| D．A person who wishes to get rid of headache. |
| A．The celebrity wants to disappear for months. |
| B．The celebrity watches television shows about cosmetic surgery. |
| C．The celebrity wants to be younger, prettier, and thinner. |
| D．The celebrity is accepted by the entertainment circle. |
| A．The forms of cosmetic surgery. |
| B．The definition of cosmetic surgery. |
| C．The effects of cosmetic surgery. |
| D．The advantages of cosmetic surgery. |
| A．Cautious. | B．Positive. | C．Negative. | D．Doubtful. |
【推荐2】A new study led by researchers at the University of California, Riverside, has found exposure to third-hand smoke (THS) causes skin diseases.
The study — the first to look at humans exposed to THS — involved 10 healthy non-smokers wearing clothing with either filtered (过滤的) air or THS chemicals. The investigation lasted three hours, during which participants would either walk or run for 15 minutes per hour — this would make them sweat and increase the levels of THS potentially taken in through the skin. Blood samples were collected, which were measured to see whether THS may have caused cell or tissue damage.
“We found THS exposure caused damage to DNA, lipids (脂质) and proteins and the damage remained even after the exposure stopped,” said Shane Sakamaki-Ching, a doctor of biology and the first author of the study. “Cigarette smokers show the same result.” The study showed exposure to THS increases signals related with skin diseases, which makes sense: the organ most likely to come into contact with THS is your skin, and so it receives the biggest exposure to the harmful chemicals. “However, what’s even more worrying is the tendency to lead to cancer,” added Sakamaki-Ching.
“If you buy a used car previously owned by a smoker, you are putting yourself at some health risk,” said Prue Talbot, a professor of cell biology at UC Riverside and the corresponding author of the study. “If you go to a restaurant that allows smoking, you are exposing your skin to THS. The same applies to staying in a hotel room that was previously occupied by a smoker.”
Sakamaki-Ching said, “Our findings can assist physicians in checking patients exposed to THS and help develop policies improving indoor environments polluted by THS.”
1. Why were the participants in the study asked to take exercise?| A．To keep themselves energetic. | B．To speed up blood circulation. |
| C．To remove THS by sweating. | D．To absorb more THS through skin. |
| A．It tends to cause bad health consequences. | B．It only puts the victim’s skin at risk. |
| C．It is likely to change smokers’ DNA. | D．It will have a mild effect on health. |
| A．Public places risk being polluted. | B．THS exists widely in our daily life. |
| C．Smokers should be punished. | D．Second-hand cars are banned from buying. |
| A．Causes of Skin Diseases | B．A Campaign to Quit Smoking |
| C．Potential Harm of THS | D．Danger of Indoor Environments |
【推荐3】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 (营养) is important for good health. Your body cannot work well unless it receives the proper kind of “fuel”(燃料). 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.Be sure to allow yourself from seven to nine hours of sleep each night. 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). Any kind of exercise is good. Most sports are excellent for keeping the body in good shapes: basketball, swimming, bicycling, running and so on are good examples. 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.
1. According to the passage,________.| A．we should always keep fit |
| B．if we were healthy, we could spend our days in doing things with less sleep |
| C．one can eat a lot to stay in good shape |
| D．one needn’t take any exercise if he is healthy |
| A．we should eat a lot of sweets |
| B．one needs a large amount of fat |
| C．people should eat according to the foods’ nutrition |
| D．we must try to sleep now and then |
| 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．the importance of doing exercise |
| C．how to keep healthy | D．what to eat |
【推荐1】Are you sometimes a little tired and sleepy in the early afternoon? Many people feel this way after lunch. They may think that eating lunch is the cause of the sleepiness. Or，in summer，they may think it is the heat. However，the real reason lies inside their bodies. At that time—about eight hours after you wake up—your body temperature goes down. This is what makes you slow down and feel sleepy. Scientists have tested sleep habits in experiments where there was no night or day. The people in these experiments almost always followed a similar sleeping pattern. They slept for one long period and then for one short period about eight hours later.
In many parts of the world，people take naps (小睡) in the middle of the day. This is especially true in warmer climates，where the heat makes work difficult in the early afternoon. Researchers are now saying that naps are good for everyone in any climate. A daily nap gives one a more rested body and mind and therefore is good for health in general. In countries where naps are traditional，people often suffer less from problems such as heart disease. Many working people，unfortunately，have no time to take naps. Though doctors may advise taking naps，employers don't follow it! If you do have the chance，however，here are a few tips about making the most of your nap. Remember that the best time to take a nap is about eight hours after you get up. A short sleep too late in the day may only make you feel more tired and sleepy afterward. This can also happen if you sleep for too long. If you do not have enough time，try a short nap — even ten minutes of sleep can be helpful.
1. Why do you sometimes feel sleepy in the early afternoon?| A．Because you eat too much for lunch. |
| B．Because it's hot in summer. |
| C．Because your body temperature goes down at that time. |
| D．Because you didn't have a good sleep last night. |
| A．All the people in warmer climates take naps in the middle of the day. |
| B．Doctors need to take naps while employers don't. |
| C．If you take naps every day，you'll never suffer from heart disease. |
| D．Taking naps regularly is beneficial to people's health. |
| A．If you get up at 6：30 am，you'd better take a nap at about 2：30 pm. |
| B．Taking a nap whenever you want will do good to your health. |
| C．You will feel less sleepy if you sleep for a long time. |
| D．You'll feel sleepy at regular intervals. |
| A．Just for a Rest | B．All for a Nap |
| C．A Special Sleep Pattern | D．Taking Naps in Warmer Climates |
【推荐2】Have you noticed how evenings cool off more in rural areas than they do in cities? Urban areas also tend to get hotter during the day than any nearby areas with lots of greenery.
It’s mainly caused by the difference in materials that cover the ground in urban areas and the countryside. In the country, evaporation(蒸发)of water from soil and the leaves of plants helps to cool the air.
Dark colours are another problem. Dark objects absorb all wavelengths of light, making the temperature increase more noticeably. In contrast, white objects reflect all wavelengths of light energy.
But cities don’t have to be so hot. Some cities have lightened their streets. This is done by covering black asphalt streets, parking lots, and dark roofs with a more reflective gray coating.
Having more green spaces also helps. Plants serve as a natural air conditioner. They catch heat, release vapour(蒸汽)into the air, and take away heat, contributing to cooler, fresher cities.
| A．Cities also produce more heat than suburban areas. |
| B．The higher the temperature, the shorter the wavelength. |
| C．This phenomenon is known as the urban heat-island effect. |
| D．So it will not be transformed into heat which makes the air hot. |
| E．Changes in building materials have a minimal effect on city temperatures. |
| F．Much of the soil in cities, by contrast, has been covered with roads and buildings. |
| G．These changes can decrease air temperatures dramatically, especially in summer. |
【推荐3】A British sleep expert, professor Chris Idzikowski, did a research showing that there was some connection between the way people sleep and their personality.
The fetal position
The fetal position gets its name from the shape of a baby in the mother's stomach. It is the most common position in the world. People who sleep in the fetal position tend towards worry and anxiety. They are often shy and sensitive. In the fetal position, a sleeper's body is like a ball as he lies on one side with legs and arms bent. Adults usually sleep in this position.
The starfish position
When sleeping like a starfish, you lie on your back with arms up near the pillow. Sleep scientist Idzikowski says starfish sleepers value friendship. People who sleep in this position are good listeners and quick to help others. If you have a starfish sleeper as a best friend, you’re in luck. Starfish sleepers are great listeners and a source of comfort to others.
The freefall position
In the freefall position, sleepers have their hands on or around their pillows, with their heads turned to one side. Freefall sleepers are social but sensitive and can become upset by extreme situations. They like to be in control of everything around their life. It's all part of their long periods of indecision, but once they make a choice, they stick to it. This position can aid in digestion (消化).
The log position
For those who suffer from back pain, the log position could be helpful for you. Log sleepers have both their arms and legs extended, so their bodies are straight like a log. Log sleepers are very trusting, but are usually social and easy-going individuals. Idzikowski claims that preferring a log position suggests that a person is sociable and can communicate with others easily.
1. What's the personality of people sleeping in fetal position?| A．Social and easy-going. | B．Sensitive and social. | C．Friendly and positive. | D．Shy and sensitive. |
| A．A fetal sleeper. | B．A starfish sleeper. | C．A freefall sleeper. | D．A log sleeper. |
| A．They do well in sports. | B．They are good listeners. |
| C．They are easy to get along with. | D．They have difficulty making decisions. |
