Traveling without a map in different countries, I find out about different ways of directions every time I ask “How can I get to the post office?”

    Foreign tourists are often puzzled in Japan because most streets there don't have name signs. In Japan, people use landmarks (地标) in their directions instead of street names. For example, the Japanese will say to travelers, “Go straight down to the corner. Turn left at the big hotel and go past a fruit market. The post office is across from the bus stop.”

    People in Los Angeles, the US, have no idea of distance on the map: they measure distance by time, not miles. “How far away is the post office?” you ask. “Oh,” they answer, “it's about five minutes from here.” You don't understand completely, “Yes, but how many miles away is it, please?” To this question you won't get an answer, because most probably they don't know it themselves.

    People in Greece sometimes do not even try to give directions because tourists seldom understand the Greek language. Instead, a Greek will often say, “Follow me.” Then he'll lead you through the streets of the city to the post office.

    Sometimes a person doesn't know the answer to your question. What happens in the situation? A New Yorker might say, “Sorry, I have no idea.” But in Yucatan, Mexico, no one answers “I don't know.” People there believe that “I don't” is impolite. They usually give an answer, but often a wrong one. So a tourist can get lost very easily in Yucatan! However, one thing will help you everywhere in the world. It's body language.

    Five weeks ago I had a total hip replacement surgery (髋关节置换手术). In Canada, we have great healthcare system. That means we get our new hips for free.

    My hip had been hurting me for years before I went to the doctor. Of course, it was free. She referred me to a surgeon, but the earliest appointment was in 10 months. That is what being free gets you. Ten months later, after some free X-rays, the surgeon told me I needed a surgery, which was about an 18-month wait, for some senior citizens had been on the operation list. Another 18 months! I dragged myself out of the surgeon, s office.

    Walking through the hospital, I thought about the situation. As the breadwinner of a large family, I couldn't wait that long, so I had to get to the front line. I was fully aware of what a Canadian should be like (Canadians are usually considered gentle and caring), but this time I really needed to fight for myself. At that very moment, in the shop window of the hospital, I saw a sign which read, “Volunteers Needed.” Suddenly, an idea occurred to me — I would get the job. Fortunately, they signed me up immediately because the average age of the volunteers at the shop was 75. They were desperate for some young blood.

    Every Friday morning, I was at the shop. While seeing the hospital staff, I'd casually ask, “What do you do?” Then I'd tell them, “Well, I'm getting my hip replaced — in 18 months.

    It's going to be so great when the pain stops.” Soon, all the staff got to know me. Naturally, in my next appointment, the surgeon recognized me. Moments later, I had a surgery date just weeks away.

    I had to say it was actually my volunteering that got me to the front of the line. And I'm not ashamed of it, for I intend to stick with the volunteering. Also, even when I cheated the system, I did it in a way that benefits society.

    As people age, the body changes in all sorts of predictable ways. Brains can slow. Wounds take longer to recover. And sleep patterns(模式) shift, too. This can come as news to many, says Michael V. Vitiello, a psychologist at the University of Washington who is expert in sleep in aging.

The most noticeable—and often most annoying—changes are how sleep and wake-up times change and sleep gets lighter, often beginning in middle age. Gone are weekend sleep to 11 a.m. and the ability to sleep through a noisy garbage truck down the block.

But not every restless night can be ignored. Studies have found that poor sleep can create a particular threat to older adults—Falls, depression and anxiety, problems with memory, and increased suicide(自杀) risk are among the effects of sleep issues in this population group that researchers have found. But scientists are still unsure why those risk connections exist.

    What is clear is the connection between good sleep and psychological well-being in older adults. A 2010 study showed us that connection when it came to sleep quality, but sleep quantity didn't show the same effects. And that, experts say, may be the key to understanding sleep as you age. If you're sleeping less, but don't feel negative effects out of bed, the changes you notice may just be normal age-related.

    Over time, Vitiello says, sleep patterns simply change. "A lot of older adults recognize that they don't sleep the same as they did when they were 18, but they can still function and they're OK. And all is well with the universe."

    If you were an exchanged student in New York City, one day your math teacher gave you following questions as your homework, please write down your answers.

    Ⅰ.A company sold a product for α dollars in 1990. The price of the product would increase by 2.5% every year.

    Ⅱ.A man needs to make 3 curtains. The cloth which is used to make curtains sells for $8.00 per meter and can be purchased only by the full（完整的） meter. The length of cloth required for each curtain is 1.6 meters.

    Ⅲ.A pet store sells only dogs and cats. In March, the store sold twice as many dogs as cats. In April, the store sold twice the number of dogs that it sold in March, and three times the number of cats that it sold in March.

    Bullgatortail 10 minutes ago

    I particularly enjoy the works of Greenwich Village poet Edward Field, whose interest in cinema led to a number of poems based on old monster movies (including many about Frankenstein and my favorite, Curse of the Cat Woman).

    Litteacher 8 29 minutes ago

    There are so many to choose from! I love Robert Frost, especially "Mending Wall", mostly because he is my dad's favorite poet. However, personally I love Lnagston Hughes's poem "Dreams" because it always brings happiness to me. I am also a big fan of the older poems, such as Spenser's "One Day I Wrote Her Name Upon the Strand" because it is so simple, and "The Tyger" and "The Lamb" by William Blake because I love the language.

    Michael Ugulini 51 minutes ago

    My favorite poet is Suji Kwock Kim. Ever since I read her book of poetry "Notes from the Divided Country", I have been a big fan of her clear and thoughtful writing. My favorite poem of hers is "Borderlands", which she wrote in memory of her grandmother. It is a poem about her grandmother's experiences during the war.

    Loraaa 1 hour ago

    Hard to decide! But if I have to, I'd say Emily Dickinson. Her life was so wonderful and her opinions about life are also interesting. Her understanding of nature speaks to the heart of anyone who loves the outdoors! Dickinson also understood human nature very well. Her poems speak of love, loneliness, ect. Finally, my favorite poem by her is "I Never Saw a Moor". I love her thoughts!