More and more people like bicycling and it is no surprise. It is fun, healthy and good for the environment. Maybe that's why there are 1.4 billion bicycles and only 400 million cars on roads worldwide today. Bikes can take you almost anywhere, and there is no oil cost!

    Get on a bicycle and ride around your neighbourhood. You may discover something new all around you. Stopping and getting off a bike is easier than stopping and getting out of your car.

    You can bike to work and benefit (受益) from the enjoyable exercise without polluting  the environment. You don't even have to ride all the way. Folding (折叠) bikes work well for people who ride the train. Just fold the bike and take it with you. You can do the same on an airplane. A folding bike can be packed in a suitcase. You can also take a common bike with you when you fly. But be sure to look for information by getting on airline websites. Not all airlines are bicycle-friendly to travellers.

Health Benefits of Bicycling:

    It helps to prevent heart diseases.

    Bicycling helps to control your weight.

    A 15-minute bike ride to and from work three times a week burns off five kilos of fat in a year.

    Bicycling can improve your mood (心情).

    Exercise like bicycling has been shown to make people feel better, more relaxed and self-confident.

    Bicycling is healthier than driving.

    The year 2117 will be an eventful one for art. In May of that year in Berlin, the philosopher-artist Jonathon Keats' “century cameras”— cameras with a 100-year-long exposure (曝光)time—will be brought back from hiding places around the city to have their results developed and exhibited. Six months after that, the Future Library in Oslo, Norway, will open its doors for the first time, presenting 100 books printed on the wood of trees planted in the distant past of 2017.

    As Katie Paterson, the creator of the Future Library, puts it: “Future Library is an artwork for future generations.” These projects, more than a century in the making, are part of a new wave of slow art intended to push viewers and Participants to think beyond their own lifetimes. They aim to challenge today's short-term thinking and the brief attention spans of modern consumers, forcing people into considering works more deliberately. In their way, too, they are fighting against modern culture—not just regarding money, but also the way in which artistic worth is measured by attention.

    In a similar fashion, every April on Slow Art Day, visitors are encouraged to stare at five works of art for 10 minutes at a time—a tough task for the average museum visitor, who typically spends less than30seconds on each piece of art.

Like the Future Library, the century cameras are very much a project for cities, since it's in cities that time runs fastest and the pace of life is fastest. “Since I started living in a city, I've somehow been quite disconnected,” Anne Beate Hovind, the Future Library project manager, who described how working on the library drew her back to the Pace of life she knew when she was growing up on a farm in her youth, told The Atlantic magazine.

    Self-esteem(自尊) plays a role in almost everything you do. {#blank#}1{#/blank#} They can have better relationships with peers(同龄人) and adults, feel happier, find it easier to deal with mistakes, disappointments and failures, and are more likely to stick with something until they succeed.

    If you want to improve your self-esteem, here are some useful tips.

    Try to stop having negative thoughts about yourself. If you're used to focusing on your shortcomings, start thinking about positive aspects of yourself. {#blank#}2{#/blank#}

    View mistakes as learning opportunities. Accept that you will make mistakes because everyone does. {#blank#}3{#/blank#} Remind yourself that a person's talents are constantly developing, and everyone does well in different things.

    {#blank#}4{#/blank#} If you realize that you're unhappy with something that you can change, then start today. If it's something you can't change(like your height), then start to work toward loving yourself the way you are.

    Make a contribution. Help a classmate who's having trouble, offer to clean up your neighborhood or volunteer your time in some other way. {#blank#}5{#/blank#}

    Have fun. Enjoy spending time with the people you care about and doing the things you love. Relax and have a good time — and avoid putting your life on hold.

It takes some work to develop good self-esteem, but once you do it's a skill you'll have for life.

A. Mistakes are part of learning.

B. Recognize what you can change and what you can't.

C. Low self-esteem is a negative evaluation(评价) of oneself.

D. Feeling like you are making a difference and that your help is valued can do wonders to improve self-esteem.

E. Each day, write down three things about yourself that make you happy.

F. People with high self-esteem do better in school and find it easier to make friends.

G. Experience is the great thing that enables you to recognize a mistake when you make it again.

    As we all know, the spine (脊柱）stands at the center of your health, providing your body with structure and support. It also contains your spine cord (脊髓) a massive collection of nerves conveying electric signals from the rest of your body to your brain.{#blank#}1{#/blank#}.

    Maintaining good posture is one of the most important things you can do to keep your spine healthy. Proper posture means standing or sitting while keeping your spine straight, except for its natural curves. Posture comes into play even when you are asleep. Sleeping on your side puts less stress on your spine than most other positions. {#blank#}2{#/blank#}. Especially if you work at a desk most of the day, it's important to get up and stretch regularly.

     {#blank#}3{#/blank#}. Stretch can help the muscles around your spine relax and allow bones to shift into better arrangement. Strength exercises like push-ups (俯卧撑）can also help by strengthening the muscles around your spine. However, don't overdo the exercise, as repeated movements can strain the muscles around your spine.Finally, your diet affects the health of your spine because many vitamins arc necessary for bones and nerves. In particular, vitamins B and D are essential to keep bones healthy, so you may want to consider taking a supplement (补充). {#blank#}4{#/blank#}, so it is also helpful to do some of exercise outside.

    Many of the actions necessary to keep your spine healthy are identical to those used to preserve your health in other ways. {#blank#}5{#/blank#}.

A. It can be hard on your back to stay still for too long

B. So protect your back, the rest of the body will benefit

C. However, the latter can also be absorbed from sunlight

D. Doing yoga to protect your spine is also a necessary step

E. Exercise is also an important factor in your spine's health

F. Try the following exercises to keep your spine more flexible

G .So, to have a healthy spine, you should take the following factors into account

    Sometimes it can be hard to recognize a true friend, one who is loyal (忠诚的) and one who is worth keeping by your side. The suggestions provided in this article will help to guide you in working out which friends are likely to be true.

    Be able to trust your friends. You should be able to trust true friends and they should return this trust. Your friends tell you secrets that no one else knows. Let you share secrets. Ask you for advice. {#blank#}1{#/blank#} However, if your friends hide things from you and act secretive, this could be a sign that they do not trust you, but it could also mean your friends keep to themselves or don't like to reveal too much about themselves.

    Consider comfort. How comfortable do your friends feel when they are around you? Watch them, are they being themselves or are they timid (胆怯的) around you? {#blank#}2{#/blank#} True friendships can take a while to develop, but if your friends are true, they should feel comfortable around you.

    {#blank#}3{#/blank#} This is not meant in a romantic way, but consider whether your friends are comfortable with the touch. If your friends are fine with hugging you, leaning on you, resting their heads on your shoulder and so forth, then you can judge they love you.

    Think about loyalty. True friends are always there for one another. If you are in need of a helping hand, your true friends should be there to offer it to you. {#blank#}4{#/blank#} You can trust friends with anything, knowing that they will be loyal and will not let your secrets out.

    Look at how you fight. Nearly all best friends fight; so if you and your friend have a little dispute (争论), don't sweat it! {#blank#}5{#/blank#} They will not tell each other's secrets and they still care about each other.

    {#blank#}1{#/blank#} While these compulsive(无法控制的) actions may appear to be irrational or pointless, and may even result in negative consequences, the individual experiencing the compulsion feels unable to stop him or herself.

    The compulsive behavior can be a physical act, like hand washing, or a mental activity, like counting objects. When an otherwise harmless behavior becomes so consuming that it negatively impacts oneself or others, it may be a symptom of obsessive-compulsive disorder (OCD)(强迫症).

    {#blank#}2{#/blank#}The former is an overwhelming desire to do something, while an addiction is a physical or chemical dependence on a substance or behavior. People with addictions will continue their addictive behavior, even when they understand that doing so is harmful to themselves and others. {#blank#}3{#/blank#}

    Unlike compulsions and addictions, which are acted out uncontrollably, habits are actions that are repeated regularly and automatically.

    Habits typically develop over time through a natural process called "habituation," during which repetitive actions that must be consciously initiated eventually become subconscious and are carried out habitually.

    While there are good habits and bad, unhealthy habits, any habit can become a compulsion or even an addiction. {#blank#}4{#/blank#} For example, the good habit of exercising regularly can become an unhealthy compulsion or addiction when done to excess.

    Common habits often develop into addictions when they result in a chemical dependency, as in the cases of smoking. The habit of having a glass of beer with dinner, for example, becomes an addiction when the desire to drink turns into a physical or emotional need to drink.

    {#blank#}5{#/blank#}While we can choose to add good, healthy habits to our routines, we can also choose to break old harmful habits.

A. A compulsion is different from an addiction.

B. It currently affects about 1 in 40 adults and 1 in 100 children in the U.S.

C. Some of these behaviors are visible actions while others are mental behaviors.

D. In other words, you really can have "too much of a good thing."

E. Compulsive behaviors are actions that a person feels "compelled" or driven to do over and over again.

F. Alcoholism, smoking, and gambling are perhaps the most common examples of addictions.

G. Of course, the key difference between a compulsive behavior and a habit is the ability to choose to do them or not.