Best friends may be priceless but the cost of keeping the relationship alive is £23,870.

    According to a study, a BFF (best friends forever) does not come cheap with devoted friends spending £4,679 on birthday presents alone over a lifetime. And while it costs nothing to be a shoulder to cry on, big-hearted Britons go the extra mile and spend £168 on pick-me-ups(提神物品) to get their mate through a rocky patch (艰难时刻)like the breakup of a relationship.

    There's a further £242 spent on presents to show how much they mean from gifts bought on holiday to treats for no reason. And distance does not break up a close friendship as BFFs spend a whopping(巨大的) £18,000 on travel to see each other despite being miles apart because of university, jobs and marriage.

    The study by cashback site TopCashBack found on average BEFs who marry can expect £431 spent on them and a further £283 on gifts when they have children. And they can rely on their pals to help out when they move houses as they will obtain £127 worth of housewarming presents and takeaways(a kind of food).

    The survey based on a friendship lasting 40 years found more than eight in ten adults with a BFF felt their friendships were worth every penny.

    TopCashback spokesperson Natasha Smith said: “Those friendships which stand the test of time are often the most important in our lives. However, they come at a cost. From train tickets once a month to flights and a new dress for a wedding on the Italian coast, the price paid for having a best mate can soon add up. But when we asked people to compare their friendship with the financial investment(投资), only 14% thought their friendship was equal to their investment with the vast majority thinking it was worth more."

    The next time someone asks you where the biggest ocean is, point them toward Jupiter. While earth harbours about 320 million cubic miles(1,333 cubic km)of water, our planet is practically a desert compared to the rest of the Solar System.

    A moon of Jupiter called Europa, for example, which is roughly the size of our own Moon, likely hides a subsurface ocean with more than twice as much water as there is on Earth.

    Yet even that pales into insignificance in comparison to Europa's neighbour Ganymede; more than 30 times as much water as our home planet is thought to reside there as liquid and ice.

    And scientists keep finding more water wherever they look. On September 28, researchers reported that Dione — a small moon of Saturn — probably has a subsurface ocean, too.

    To see just how Earth stacks up against other ocean worlds, Business Insider contacted Steve Vance, a planetary scientist at NASA's Jet Propulsion Laboratory who's calculated the numbers on just how much water might be out there.

    In order of how much water they have, from the least to the most, they are: Enceladus, Dione, Earth, Europa, Pluto, Triton, Callisto, Titan, and Ganymede. Mimas, a moon of Saturn, and Ceres, the largest asteroid in the Solar System, are also thought to have subsurface oceans —but scientists aren't yet sure how big each one might be.

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"Mum, what does it mean when someone tells you that they have a skeleton(骨骼) in the closet?" Jessica asked. "A skeleton in the closet?" her mother paused thoughtfully. "Well, it's something that you would rather not have anyone else know about. For example, if in the past, someone in Dad's family had been arrested for stealing a horse, it would be 'a skeleton in his family's closet'. He really wouldn't want any neighbor to know about it."

"Why pick on my family?" Jessica's father said with anger. "Your family history isn't so good. you know. Wasn't your great-great-grandfather a prisoner who was transported to Australia for his crimes?" "Yes, but people these days say that you are not a real Australian unless your ancestors arrived as prisoners ." "Gosh, sorry I asked, I think I understand now," Jessica cut in before things grew worse.

    After dinner, the house was very quiet. Jessica's parents were still quite angry with each other. Her mother was ironing clothes and every now and then she glared at her husband, who hid behind his newspaper pretending to read. When she finished, she gathered the freshly pressed clothes in her arms and walked to Jessica's closet. Just as she opened the door and reached in to hang a skirt, a bony arm stuck out from the dark depths and a bundle of white bones fell to the floor. Jessica's mother sank into a faint(晕倒), waking only when Jessica put a cold, wet cloth on her forehead.  She looked up to see the worried faces of her husband and daughter.

"What happened？Where am I?" she asked. "You just destroyed the school's skeleton, Mum," explained Jessica. "I brought it home to help me with my health project, I meant to tell you, but it seemed that as soon as I mentioned skeletons and closets, it caused a problem between you and Dad." Jessica looked in amazement as her parents began to laugh madly. "they're both crazy," she thought.

    Some people think that success is only for those with talent or those who grow up in the right family, and others believe that success mostly comes down to luck. I'm not going to say luck, talent, and circumstances don't come into play because they do. Some people are born into the right family while others are born with great intelligence, and that's just the reality of how life is.

    However, to succeed in life, one first needs to set a goal and then gradually make it more practical. And, in addition to that, in order to get really good at something, one needs to spend at least 10,000 hours studying and practicing. To become great at certain things, it'll require even more time, time that most people won't put in.

    This is a big reason why many successful people advise you to do something you love. If you don't enjoy what you do, it is going to feel like unbearable pain and will likely make you quit well before you ever become good at it.

    When you see people exhibiting some great skills or having achieved great success, you know that they have put in a huge part of their life to get there at a huge cost. It's sometimes easy to think they got lucky or they were born with some rare talent, but thinking that way does you no good, and there's a huge chance that you're wrong anyway.

    Whatever you do, if you want to become great at it, you need to work day in and day out, almost to the point of addiction（沉迷）, and over a long period of time. If you're not willing to put in the time and work, don't expect to receive any rewards. Consistent, hard work won't guarantee you the level of success you may want, but it will guarantee that you will become really good at whatever it is you put all that work into.

    There is an old saying that America and Britain are "two nations divided by a common language." No one knows exactly who said this, but it reflects the way many Brits feel about American English. But are American and British English really so different?

    Vocabulary

    The most obvious difference between American and British English is vocabulary. There are hundreds of everyday words that are different. For example, Americans go on vacation while Brits go on holidays; New Yorkers live in apartments while Londoners live in flats. There are far more examples than we can talk about here. Fortunately, most Americans and Brits can usually guess the meaning through the context of a sentence.

    Past Tense Verbs

    You'll also find some differences with past forms of irregular verbs. The past tense of "learn" in American English is "learned". British English has the option of "learned" or "learnt". The same rule applies to "dreamed" and "dreamt", "burned" and "burnt", and "leaned" and "leant". Americans tend to use the -ed ending; Brits tend to use the-t ending.

    Spelling

    There are hundreds of slight spelling differences between British and American English. Noah Webster, an author, politician and teacher, made an effort to reform English spelling in the late 1700s.

    Webster wanted to spell words the way they sounded. You can see Webster's legacy(遗产) in the American spelling of words like color (from colour), honor (from honour), and labor(from labour).

    Not So Different After All

    British and American English have far more similarities than differences. With the exception of some regional dialects, most Brits and Americans can understand each other without too much difficulty. They watch each other's TV shows, sing each other's songs and read each other's books. They even make fun of each others' accents.

Famous Modern Chinese Buildings

    Beijing International Airport

    The first place most visitors see when they arrive in China is Beijing International Airport. The airport was constructed in the 1950s. It has an indoor garden, a children's playground, and over 70 food businesses in Terminal 3 alone.

    Shanghai World Financial Center

    Completed in 2008, SWFC took over 10 years to complete due to financial shortages and construction delays. Since its completion, it has won countless architectural awards.

    Tourists are welcome at SWFC's viewing platform, which at 474 meters above ground is the world's highest closed viewing platform.

    The Water Cube

    It was constructed for use during the Beijing 2008 Summer Olympics. Now visitors can express surprise at the architecture of the building. They can enjoy the indoor atmosphere as well.

    Among the offerings of the Water Cube are a restaurant and bar, a shopping area, and Water World, a family water park

    The Bird's Nest, Beijing

    It was designed mainly for the 2008 Summer Olympics. It can hold up to 80,000 people and has been used for a winter theme park. Nowadays, its main income is as a tourist attraction. It draws more than 20,000 tourists every day.

    National Center for the Performing Arts

    It was completed in 2007. The building is surrounded by a man-made lake, requiring guests to enter via an underground hallway. It is home to an Opera Hall, Music Hall, and Theater.