The teenage years can be tough, and it's normal to feel sad every now and then. But if these feelings don't go away or become so intense that you can't handle them, you may be suffering from depression.{#blank#}1{#/blank#}

    Try not to isolate yourself.

    When you're depressed, you may not feel like seeing anybody or doing anything. Just getting out of bed in the morning can be difficult, but isolating yourself only makes depression worse.{#blank#}2{#/blank#}Spend time with friends, especially those who are active.

    Keep your body healthy.

    Making healthy lifestyle choices can do wonders for your moods. Ever heard of the "RunnersHigh"? Physical activity can be as effective as medications for depression, so get involved in sports, ride your bike, or take a dance class. Any activity helps!{#blank#}3{#/blank#}As for food, make sure you're feeding your mind with plenty of fruits, vegetables, and whole grains.

    Avoid alcohol and drugs.

    You maybe try drinking or use drugs in an effort to escape from your feelings and get a "mood boost", even if just for a short time. However, substance use can make depression worse.{#blank#}4{#/blank#}You will need special treatment for your substance abuse problem.

{#blank#}5{#/blank#}

    Stress and worry can lead to depression. Talk to a teacher if exams or classes seem overwhelming. In addition,if you have a health concern you feel you can't talk to your parents about, see a doctor. A health professional can help you approach your parents and guide you toward appropriate treatment. If you're dealing with relationships, friendships, or family problems, talk to an adult you trust.

A. Ask for help if you are stressed.

B. Even a short walk can be beneficial.

C. Turn to your parents for help.

D. As you get out into the world, you may find yourself feeling better.

E. In short, drinking and taking drugs will make you feel worse — not better — in the long run.

F. The more exercise you do, the healthier you will be.

G. Help is available and you have more power than you think.

    A layover (临时滞留) or flight delay can be extremely fun in these international airports.

Munich Airport, Germany

    Aviation (航空) lovers passing through Munich can take a behind－the－scenes tour to learn how the airport operates. Visitors can also tour three historic aircraft and a retired rescue helicopter, climb up to a 28－metre high observation platform for an up－close view of take－offs and landings, and watch films on aviation in the airport's 60－seat cinema. Travelers can also kill layover time at an 18－hole mini－golf course, or even stop in for a teeth cleaning at the airport dental office.

Changi Airport, Singapore

    After a long flight to Singapore, travelers can relax in a Balinese－style swimming pool, work out at the airport gym, or enjoy a drink and live musical performances at the airport's Music Bar. The airport also boasts a tranquil butterfly garden, and a “fragrant garden” which is home to 15 species of plants and trees. Free movies at one of two airport cinemas also keep passengers entertained.

    Schiphol Amsterdam Airport, the Netherlands

    Schiphol is Europe's fifth－largest airport. Here passengers can view the works of Dutch masters free of charge, and try their luck at airport's casino (赌场). You can even have your wedding ceremony at Schiphol—couples can choose from four different wedding packages, including a 1930－style ceremony held on a Dakota military aircraft.

    San Francisco International Airport, California

    The airport's 24－hour AirTrain not only moves passengers between terminal, but also provides a fun view of the runways. There are three aquariums (水族馆) to explore, along with interactive play areas, an aviation museum, and a library. If that's not enough to keep the little ones busy, travelers can rent portable DVD players and movies for use in the airport.

    With time going on, dogs have developed a special relationship with people. Recently, however, some dogs have taken a different role in people's lives — therapy dogs.

    {#blank#}1{#/blank#} Some therapy dogs visit patients in hospitals or nursing homes, while others visit children in schools and libraries. They are there to help children become better readers.

    Reading programs that use therapy dogs have been in existence for more than ten years. All therapy dogs of this program are registered with an organization that tests the dogs to make sure they have the right personality for the job.

    {#blank#}2{#/blank#} Both the dogs and the handlers are volunteers with the reading program.

    At the start of a reading therapy session, a child and a dog are introduced. The pair is allowed to settle down in a quiet corner together. {#blank#}3{#/blank#} An adult handler stays nearby but generally lets the dog perform its job without being interrupted. Sometimes, a handler may ask a question that encourages the child to work with the dog to help the child feel more comfortable.

    Not every child will be able to be part of a reading therapy program that uses dogs. A few children might be allergic to dogs or afraid of them; some children might have cultural traditions that prevent them from touching a dog. {#blank#}4{#/blank#}

    Reading therapy programs inspire learning and change for human beings. The readers benefit a lot, gaining confidence and learning that reading aloud can be a relaxing experience.

    {#blank#}5{#/blank#} They spend time with human friends. For dogs that love human companionship and a quiet place to rest, being part of a reading therapy program can be a great way to spend a few hours being with humans each day.

A. As the child reads, the dog usually lies quietly and listens.

B. A dog's handler also takes a class and must pass a test to work in the therapy program.

C. When reading to an animal, some children may become relaxed.

D. A therapy dog is more of a companion and is trained to help people in different ways.

E. But therapy animals also serve in many other areas.

F. In these circumstances, other animals are available, such as cats and parrots.

G. But how do the therapy dogs benefit from it?

Rising through stages to realize ourselves

    Many modern people have the problem that they don't know who they are and what their purpose is. {#blank#}1{#/blank#} Once high school seniors graduate, they seem to lose their identity. They once studied hard. But after they stop working, they begin to lose their way.

    In the theory of the Hierarchy of Needs（需求理论）, Abraham Maslo, put forward a similar situation, which consists of the five levels of a person's need. The fifth and final level is self-realization, which is where our final achievement lies. {#blank#}2{#/blank#}.

    I think self- realization has three major aspects. The first stage is acceptance, the second stage is discovery and the last stage is perseverance.

    Acceptance is the first stage. We should be reminded that we are all born unique, so we all have our own strengths and weaknesses. Only when we understand these, can we pursue them or change them. {#blank#}3{#/blank#}.

    Once we've accepted ourselves, we can discover what we are interested in and what we want to be. {#blank#}4{#/blank#} but indeed we should live for ourselves. So before we start working towards a purpose, we should ask ourselves "Is this what we truly desire?" and "Is this going to change the situation we're in?"

    The last stage is perseverance.{#blank#}5{#/blank#}. Those who can self-realize are people who focus on the things they want to change.

    Through the three stages, we could gain recognition of ourselves. And by this point, whatever our lives were like, we would be able to stand tall, confident of ourselves.

A. It's nothing to a man of perseverance

B. Only by acceptance of the past can we change it

C. This is especially common among college students

D. Many people tend to go along with social expectations

E. Being objective and yet tolerant is the key to acceptance

F. It is the process of knowing ourselves and finding a purpose

G. Exploring our potential isn't going to be done in a short time

    We love the sea. We swim into it, live near it, build beside it, and even imagine about living under the sea. But we're terrified of it, too. For much of our history, we have turned to "hard engineering" to control the marine (海洋) environment and manage its influence on us. We build dams, sea walls and channels. But all these efforts seem to fail. The sea has a habit of taking back its own. And we suffer.

    Johnston, a marine ecologist, is advocating for "blue engineering" — the marine version of the "green engineering" movement on land that has seen nations like Singapore building the walls and roofs of the concrete jungle with plant life.

    We are expanding further into the marine environment. This practice does harm lo marine ecosystems. We're loving the sea to death, but we've not been thinking about design of structures (建筑物) with respect to ecology. Some coastal structures create shade, which reduces the growth of seaweed. Bright lights at night contuse species such as turtles. That's why blue engineering comes in.

    Throughout the world people are starting to turn things around. Researchers with the World Harbour Project are creating tiles (瓦片) similar to the natural structures found on rocky shores with 3D printing technology. These make more attractive homes for marine creatures. Researchers are also actively seeding these tiles with local seaweeds and creatures such as the Sydney rock oyster, which is particularly good at improving water quality. Twelve harbours around the world are taking part in this marine tile experiment, each working with their own unique marine life.

    It's a far cry from, he days when huge number, of old tyres were thrown, into the sea to build "artificial reef" (礁石). Those clumsy early attempts are now costing millions to remove, showing just how far we have yet to go in understanding how best to co-habit with the underwater world.

Washington, D.C. Bicycle Tours

Cherry Blossom Bike Tour in Washington, D.C.

    Duration Tour

    This small group bike tour is a fantastic way to see a world-famous cherry trees with beautiful flowers of Washington, D.C. Your guide will provide a history lesson about the trees and the famous monuments where they blossom. Reserve your spot before availability — the cherry blossoms—disappear!

Washington Capital Monuments Bicycle Tour

    Duration: 3 hours (4 miles)

    Join a guided bike tour and view some of the most popular monuments in Washington, D.C. Explore the monuments and memorials on the National Mall as your guide shares unique facts and history at each stop. Guided tour includes bike, helmet, cookies and bottled water.

Capital City Bike Tour in Washington, D.C.

    Duration: 3 hours

    Morning or Afternoon, this bike tour is the perfect tour for D.C. newcomers and locals looking to experience Washington, D.C.in a healthy way with minimum effort. Knowledgeable guides will entertain you with the most, interesting stories about Presidents, Congress, memorials, and parks. Comfortable bikes and a smooth tour route(路线)make cycling between the sites fun and relaxing.

Washington Capital Sites at Night Bicycle Tour

    Duration: 3 hours(7miles)

    Join a small group bike tour for an evening of exploration in the heart of Washington, D.C. Get up close to the monuments and memorials as you bike the sites of Capitol Hill and the National Mall. Frequent stops are made for photo taking as your guide offers unique facts and history. Tour includes bike, helmet, and bottled water. All riders are equipped with reflective vests and safety lights.