[1]Stamp collectors usually collect stamps only from certain countries or regions. The traditional method of stamp collecting is to organize stamp collection according to the issue dates.

     [2]Of course, there are many    .  . You can collect stamps relating to a particular theme. For example, sport lovers may choose the Olympic theme. They try their best to find Olympic stamps issued by various parts of the world every four years. Some of them may want to concentrate on even more specific sport activities like ball games, gymnasium, swimming, etc.

     [3]If you like astronomy, you may be keen on collecting stamps describing the stars, planets, spacecraft, spacemen, etc. once you have fixed the topic, you no longer need to bother about stamps other than the theme you selected. Then, you can put all your effort to collect the stamps around it.

     [4]China issues zodiac animal stamps (十二生肖邮票) every year to celebrate the Lunar New Year. They are extremely popular and a lot of collectors wait patiently for 12 years to collect a full set of them. Hong Kong's Lunar New Year special stamp series began in 2000 with the Year of Dragon and the twelfth and final set was issued in 2011, the Year of Rabbit. Recently some Western countries have issued zodiac animal stamps, which attract a lot of attention as well.

     [5]You may choose any theme you like. However, you should bear in mind an essential point. The topic you choose should not be too narrow. Otherwise, it is very difficult to accumulate stamps around the topic. You will be depressed and even lose your interest in collecting stamps.

      [6]Collecting stamps with themes is especially popular among teenagers because there is a wide range of choices for them. The main challenge is how you organize and expand your collection around your theme.

    When my father was celebrating a milestone (里程碑) birthday, I pulled together a surprise gift that he would never forget.

    As he was approaching 60,1 had a firm idea: What if I could get the memories people had of him, put each one into an envelope - 60 in total - and have him open them, one by one, on his birthday? So I wrote an e-mail to family and friends, explaining my idea.

    I sent the e-mail and waited. And then the replies started coming in and I was very, very surprised. There were so many memories, and they were all so lovely. They came from the '50s, '60s, '70s, from every decade（十年） between now and the day my dad was born. They came from my mother, my siblings, my grandma, my dad's friends from high school, his sister, my dad's first boss, a colleague at his first job, from people who hadn't seen my dad in 40 years, from people I myself hadn't even informed. They typed them and handwrote them. They mailed them and e-mailed them.

    The night before Dad's birthday, my sister and 1 stayed up late, putting everything together with some

    The next morning, after breakfast and presents and cake, we gave the pile of envelopes to him. "Just one more thing for you," we said.

It took him a long time to open them and read. Each one was a brief ticket to another time, a leap (跳跃) backward over years and decades. There was a lot of laughter and a few tears, too.

    I was kind of sad when the project was over because it was great fun to collect these memories. It gave me a different picture of my dad.

    Six days a week, up and down the red hills of northeast Georgia, my grandfather brought the mail to the folks there. At age 68, he retired from the post office, but he never stopped serving the community.

    On his 80th birthday, I sent him a letter, noting the things we all should be thankful for — good health, good friends and good outcomes. By most measurements he was a happy man. Then I suggested it was time for him to slow down. At long last, in a comfortable home, with a generous pension, he should learn to take things easy.

     “Thank you for your nice words,” he wrote in his letter back, “and I know what you meant, but slowing down scares me. Life isn't having it made; it's getting it made.”

     “The finest and happiest years of our lives were not when all the debts were paid, and all difficult experiences had passed, and we had settled into a comfortable home. No. I go back years ago, when we lived in a three-room house, when we got up before daylight and worked till after dark to make ends meet. I rarely had more than four hours of sleep. But what I still can't figure out is why I never got tired, never felt better in my life. I guess the answer is, we were fighting for survival, protecting and providing for those we loved. What matters are not the great moments, but the partial victories, the waiting, and even the defeats. It's the journey, not the arrival, that counts.”

    The letter ended with a personal request: “Boy, on my next birthday, just tell me to wake up and get going, because I will have one less year to do things — and there are ten million things waiting to be done.”

    Christina Rossetti, an English poet, once said: “Does the road wind uphill all the way? Yes, to the very end.” Today, at 96, my grandfather is still on that long road, climbing.

    About 7 million people over the age of 65 have been diagnosed with depression, and many more could be suffering. It is high time that you learned how to know the signs and help them. Depression is a big problem for seniors, especially those who are lack of care and attention. Older people are much more likely to be alone, socially isolated(孤立的) or feel a lack of purpose. Sometimes older people have a much more difficulty time admitting mental health problems. Many times, the link between depression and physical illness is much stronger.

    The elderly don't like to express sadness the way that young people do. Older people who are depressed may have more physical troubles and may pay more attention to them. Depression may result from early memory loss and meanwhile, depression will make a person forget more and faster. A patient with early memory loss and depression really needs to be treated for the depression to slow the memory loss. A mood change is also a sign of depression. If a previously calm person becomes increasingly annoyed, or a previously clean person no longer bothers to shower or clean up, that person should be considered.

Don't tell older adults that you think they may be depressed, as older adults — particularly men–see depression as a weakness. What you should do is tell them you're worried about their health. Tell them they seem to be out of sorts.

    Say you just want to check with the doctor to see what's going on. Once you've used physical symptoms to get that person to agree to a check-up, mention your fear to the doctor and allow the doctor to approach the subject of depression with the patient.

    We met a little girl seven years ago during one of my daughter's occasional hospital stays. Her name was Beth and she was my daughter's roommate for a week. My Daughter had an incurable kidney(肾) disease. Beth was a very happy girl, despite the fact that she had cancer. I was amazed at her will and determination to never give up, however sick her treatment made her. She was always concerned about my daughter and the other children with cancer.

    My daughter's hospital treatment was completed in a week and we were waiting for her final discharge orders when Beth appeared. She said “I want you to have this. I know you need a new kidney, so keep this angel pin with you till you get better. She will watch over you and make you smile. My friend, John, gave it to me to watch over me. When you get your new kidney and smile, you can give this angel to someone that needs her, too”. My daughter thanked her and the girls exchanged hugs and big smiles. Later that year, Beth passed away.

    We kept that angel for six more years. Finally, a kidney became available and she received a transplant.

    Now she felt it was time to give it to someone who needed to be watched over until he or she could smile again. She gave it to an elderly man trying to recover from a heart problem.

    How many families and hearts this angel has touched, no one knows for sure. But all that it took was a single gift of kindness. So in this Christmas season, create a tradition with your children or maybe someone you love. Give them a gift that keeps on giving. It's a gift from your heart.

    What kind of house will you buy in the future? Would you like to live in a house where your plants can call your phone to tell you that they need to be watered? Or a house that helps you cut your energy bill by turning off the lights when you leave a room? It may sound like science fiction, but it already exists! Come and visit the Smart Home at the Museum of Science and Industry in Chicago, Illinois. It will show how you can live a green lifestyle by making use of advanced technology throughout the home that makes your life easier and simpler.

    The Smart Home uses green technology to record the energy it uses, including electricity, water and gas. The house's energy dashboard (仪表盘) lets you know your energy use through your television and computer. The house greets you with the new information when you walk in the door. It is able to record when you enter and leave rooms, and can switch the lights, television and music off                    .

    The Smart Home is made entirely of recyclable and renewable materials. The furniture is made from used light bulbs, plastic bottles and other renewable materials, but you can't tell from just looking at them. The kitchen countertops (工作台面) are made of recycled glass.

    The entire house is designed to control the use of energy. The roof of the Smart Home has a sustainable vegetable garden, which does little harm to nature. Even the personal computer is green: it uses less power than a 60-watt light bulb. The house can raise and lower the window shades by itself.