With busy lives, it can be hard to find time to volunteer. However, the benefits of volunteering are great to you, your family, and your community(社区).

    One of the better-known benefits of volunteering is the effect on the community. Volunteering allows you to connect with your community and make it a better place. Volunteering also strengthens your ties to the community and broadens your support network, exposing(使暴露) you to people with common interests, neighborhood resources, and fun and satisfactory activities.

    While some people are naturally outgoing, others are shy and have a hard time meeting new people. Volunteering gives you the opportunity to practice and develop your social skills, since you are meeting regularly with a group of people with common interests. Once you have the desire, it's easier to make more friends and contacts.

    Volunteering provides many benefits for both mental and physical health. You're doing good to others and the community, which makes you experience the pleasure of success. Your role as a volunteer can also give you a sense of pride and identity.

    Reducing the risk of depression(沮丧) is another important benefit of volunteering. A key risk factor for depression is social isolation. Volunteering keeps you in regular contact with others and helps you develop a solid support system, which in turn protects you against stress and depression when you're going through challenging times. Volunteering is good for your health whether you are young or old, but it's especially good in older adults.

    Volunteering offers you the chance to try out a new career without making a long-term commitment. It is also a great way to gain experience in a new field. Volunteering work can expose you to professional organizations or internship（实习）that could be of benefit to your career. That volunteer work is unpaid doesn't mean the skills you learn are basic. Many volunteering opportunities provide training. In addition, volunteering can also help you build upon skills you already have and use them to benefit the greater community.

    Volunteering is a fun and easy way to explore your interests and passions. Volunteer opportunities that match both your goals and your interest are most likely to be fun and satisfying for you. Doing volunteer work you find meaningful and interesting can be a relaxing escape from your day-to-day routines of work, school, and family commitments. Volunteering also provides you with renewed creativity, motivation, and vision that can be carried over into your personal and professional life.

    Cross-country skiing can be enjoyed by a wide range of students, from the youngest kindergartners to those secondary students. It is really a fun activity, providing students a gentle workout outside in winter. While having fun, students can gain physical and mental benefits.

    The physical benefits of cross-country skiing are well-known. If we look at Olympic cross-country skiers, we can see the positive effects on the body that result from training for cross-country skiing.

    The average best female cross-country skiers carry 11 percent body fat, and best male skiers carry 5 percent. These percentages are well below the average people who are considered to be athletic—17 percent for females and 10 percent for males. Burning a high number of calories while skiing helps to keep skiers slim in a healthy and attractive way.

    Cross-country skiing is also an efficient way to exercise a large number of muscles at once. The upper body gets much more of workout because skiers use ski poles as a means of propulsion (推进), the force that drives skiers forward. Of course, the leg muscles also do their fair share. People who use cross-country skiing as a workout over several weeks will discover that the muscles of their whole body increase in strength.

    Cross-country skiing on a regular basis has a tremendous effect on a person's cardiovascular (心血管的) system. In addition to gaining strength in the muscles of the upper and lower body, people who use cross-country skiing as a workout method over several weeks will also discover that their heart is stronger. A strong heart pumps more efficiently, sending out more blood to the muscles with each contraction (收缩). Through weeks of skiing, people often discover that their resting heart rate has decreased. Highly trained Olympic cross-country skiers have resting heart rates between 28 and 40 beats per minute. Compare that to the resting heart rate of the average person, which is 60 to 80 beats per minute!

    The benefits of cross-country skiing extend beyond overall general health. A lot of evidence exists showing that regular physical activities increase the release of mood-lifting endorphins  (内啡肽) in the body. After fun skiing lessons, students will be full of energy; they will be relaxed and in a better mood than when they started class. Students will leave class with a sense of accomplishment, knowing that they have developed new skills in a fun activity.

Cross-country skiing is a great way to exercise the whole body. Now more and more students are taking part in this exercise outside during the winter months. They are enjoying it and benefiting from it!

    A lot of kids and adults say they get nervous during social situations. Maybe it's speaking up in class or making a phone call or just trying something new. You might feel butterflies in your stomach, or your heart may beat faster or you get suddenly sweaty. {#blank#}1{#/blank#} And if fear of being embarrassed or making a mistake is getting in your way, there are some things you can try on your own to help.

    {#blank#}2{#/blank#}

    Experts agree that avoiding situations that make us anxious can actually make things worse in the long run. Getting out of something you didn't want to do might make you feel better in the moment, but you will still feel anxious the next time you're asked to do it.

    Push yourself.

    While leaving your comfort zone isn't easy, it can be very good for you. That's because anxiety tends to go away when you start doing the things that make you anxious.{#blank#}3{#/blank#}You might find you have the skills to handle it. And next time you're in that situation you might feel less self-conscious.

    Practice a lot.

    As an experiment, try doing something that makes you nervous.{#blank#}4{#/blank#} Whatever you do, you'll find that it gets easier over time. That's because by practicing the things that make you nervous you are actually improving your ability to easily handle them.

    Relax yourself.

    Instead of trying to relax by watching television or visiting a website, try a deep relaxation practice that has a physical effect on the mind.{#blank#}5{#/blank#}

A. Don't avoid something.

B. Being nervous is uncommon.

C. Pay no attention to your original thoughts.

D. Those things are your body's reaction to fear.

E. Start with little things like answering questions in class.

F. So try to face your anxiety and fear and see what happens.

G. For example, doing things like yoga can also help you stay calm.

    Why Is Recycling Important?

    When you throw things away, you might be very glad to do it. Unfortunately, that's not the end of the story. The things we throw away have to go somewhere－usually they go off to be buried underground in a landfill (垃圾填埋) or burnt in an incinerator (焚化炉). Landfills can be terribly polluting. They look awful, they smell terrible, they take up space that could be used for better things, and they sometimes create harmful soil and water pollution that can kill fish in our rivers and seas.

    One of the worst things about landfills is that they're wasting a huge amount of useful material. It takes a lot of energy and a lot of resources to make things, and when we throw those things in a landfill, at the end of their lives, we're also saying goodbye to all the energy and resources instead of burying it in landfills. That certainly has advantages: it reduces the amount of waste that has to be buried and we can get useful energy from it. But it can also produce harmful air pollution, and burning almost anything adds to the problem of global warming and climate change.

    The trouble is, we're all in the habit of throwing things away. In the early part of 20^th century, people used materials much more wisely－especially in World War Ⅱ, but in recent decades we've become a throwaway society. We tend to buy new things instead of getting old ones repaired. A lot of men use single-use razors (剃须刀), for example, instead of buying reusable ones, while a lot of women wear single-use stockings. Partly this is to do with the great convenience of throwaway items. It's also because they're cheap. But wasteful period in our history is coming to an end.

    We're finally starting to realize that our lifestyle is creating problems for future generations. Earth is soon going to be running on empty if we carry on as we are. Americans have a much richer life than almost anyone else on Earth. What happens when people in developing countries such as India and China decide they want to live the same way as us? According to the environmentalists, we'd need two Earths to satisfy all their needs.