Imagine you are in a jumping contest. Animals and insects can also enter this contest. But they might just leave humans in the dust!

    The first event is the long jump. The human athlete is Mike Powell. In 1991, he jumped nearly 30 feet, which is the world record for the long jump. That is about five times his own height.

    His competitor in the long-jump contest is a frog named “Rosie the Ribbiter.” Rosie set the world record for frogs in 1986 by jumping more than 21 feet. Her record has never been broken by any other frog. Compared to Mike Powell, Rosie's jump is not that amazing. But wait! Rosie is only about 10 inches long when her legs are stretched to their full length. She can jump more than 25 times her size. Rosie, the frog, wins the long-jump event.

    The next event is the high jump. Javier Sotomayor, the world record holder, can jump a bar (横杆) 8 feet high. That is about as high as the ceiling in most homes.

    Looking around for someone to challenge his record, Javier might need a magnifying glass (放大镜). The next contestant is a tiny insect called the spittlebug (吹沫虫).

    The spittlebug can jump 28 inches into the air. It is only a quarter-inch long, less than the width of a pencil. If the spittlebug were the same size as Javier, it would be able to jump 600 feet into the air. That is like a human jumping over a building 55 stories high!

    Though the humans lose the “jumping contest,” their competitors would probably agree that Mike and Javier are still pretty excellent athletes. If only Rosie and the spittlebug could speak!

    The morning had been a disaster. My tooth was aching, and I'd been in an argument with a friend. Her words still hurt: “The trouble with you is that you won't put yourself in my place. Can't you see things from my point of view?”I shook my head stubbornly--and felt the ache in my tooth. I'd thought I could hold out till my dentist came back from holiday, but the pain was really unbearable. I started calling the dentists in the phone book, but no one could see me immediately. Finally, at about lunch time, I got lucky.

    “If you come by right now,” the receptionist said, “the dentist will fit you in.”

    I took my purse and keys and rushed to my car. But suddenly I began to doubt about the dentist. What kind of dentist would be so eager to treat someone at such short notice? Why wasn't he as busy as the others?

    In the dentist's office, I sat down and looked around. I saw nothing but the bare walls and I became even more worried. The assistant noticed my nervousness and placed her warm hand over my ice-cold one.

    When I told her my fears, she laughed and said, “Don't worry. The dentist is very good.”

    “How long do I have to wait for him?”I asked impatiently.

    “Come on, he is coming. Just lie down and relax. And enjoy the artwork,” the assistant said.

    “The artwork?” I was puzzled.

    The chair went back, suddenly I smiled. There was a beautiful picture, right where I could enjoy it :on the ceiling. How considerate the dentist was! At that moment, I began to understand what my friend meant by her words.

What a relief!

    Eating chips, chocolates and cakes may damage a child's intelligence, according to researchers at Bristol University. Their study suggests a link between diet high in processed(加工的) food and a slightly lower IQ. Writing in the journal of Epidemiology and Community health, they suggest poor nutrition may affect brain development.

    The eating habits of 3,966 children taking part in the Avon Longitudinal Study of Parents and Children were recorded at the ages of three, four, seven and eight and a half. The researchers said three types of diet appeared: processed diet which was high in fat, sugar and fast food, traditional diet of meat, potatoes and vegetables, and healthy diet of salads, fruit and fish. The children all took IQ tests when they were eight and a half.

    The researchers found a link between IQ and diet, even after taking into consideration other factors such as the mother's level of education and social class. Diet high in processed food at the age of three was linked to a slightly lower IQ at the age of eight and a half, suggesting early eating habits have a long-term influence. Dr Pauline Emmett, who carried out the study at Bristol University, said, “Brain development is much faster in early life, and it's when it does most of its growing.”

    Although the relationship between diet and IQ was very strong, the influence was quite small. Processed food was linked with IQs only a few points lower. Experts in the field said the results had shown common sense was right. Fiona Ford, spokesperson for the British Dietetic Association, said, “It's well worth looking at the long-term influence of diet, for everyone's familiar with the short term. The research agrees with the type of advice we already know, but that's not always enough. Sometimes a society has to help a person change; we need to educate more young parents about healthy eating.”

    Not sure what gift to get your loved ones? Think technology! You may even find something special for yourself!

    Mini Quadcopter

    Would you like to have a flying toy, but lack space to fly one? Consider a Mini Quadcopter that is small enough to fit inside your hand. This Mini Quadcopter can be controlled to fly in any direction with its remote control. The Mini Quadcopter is available from Hammacher Schlemmer for $39.95.

    Selfie Toaster

    Does your sweetie like taking selfies and eating toast? Well, why not combine the two with the Selfie Toaster? The Selfie Toaster crates an image on the piece of toast so you can smile at yourself every morning. The Selfie Toaster is available from Etsy for $10.95.

    Amazon Echo

    Give the knowledge of the world with the Amazon Echo.

    The advice can answer questions, tell you about weather conditions, tell jokes, play music and more. The Echo also acts as a Bluetooth speaker so you can connect your phone and listen to your favorite songs. The Echo is available from Amazon for $179.

    Indoor Snowfall Light

    Get into the spirit of the holiday season in your home with the Indoor Snowfall Light. The light shows snowflake shapes in your room to give you the feeling of a winter snowfall. You can control the speed of the snowfall, unlike the real whether. The Indoor Snowfall Light is available from Sharper Image for $59.99.

    In the classic marriage vow (誓约), couples promise to stay together in sickness and in health. But a new study finds that the risk of divorce among older couples rises when the wife－not the husband－becomes seriously ill.

    "Married women diagnosed with a serious health condition may find themselves struggling with the impact of their disease while also experiencing the stress of divorce." said researched Amelia Karraker.

    Karraker and co-author Kenzie Latham analyzed 20 years of data on 2,717 marriages from a study conducted by Indiana University since 1992. At the time of the first interview, at least one of the partners was over the age of 50.

    The researchers examined how the onset (发生) of four serious physical illnesses affected marriages. They found that, overall, 31% of marriages ended in divorce over the period studied. The incidence of new chronic (慢性的) illness onset increased over time as well, with more husbands than wives developing serious health problems.

    "We found that women are doubly weak when their marriage breaks up in the face of illness," Karraker said. "They're more likely to be widowed, and if they're the ones who become ill, they're more likely to get divorced."

    While the study didn't assess why divorce is more likely when wives but not husbands become seriously ill, Karraker offers a few possible reasons. "Gender roles and social expectations about caregiving may make it more difficult for men to provide care to sick spouses." Karraker said. "And because of the imbalance in marriage markets, especially in older ages, divorced men have more choices among potential partners than divorced women."

    Given the increasing concern about health care costs for the aging population, Karraker believes policymakers should be aware of the relationship between disease and risk of divorce.

    "Offering support services to spouses caring for their other halves may reduce martial stress and prevent divorce at older ages." she said. "But it's also important to recognize that the pressure to divorce may be health-related and that sick ex-wives may need additional care and services to prevent worsening health and increased health costs."

    The following are four famous malls in the world where you can not only purchase things but also enjoy entertainment.

    Mall of America (Minnesota, USA)

    This Mall has a theme park and a wedding church, where more than 5,000 couples have been married since its opening. The mall of America opened in 1992 and is the third largest mall in North America.

    The mall of America is the most visited shopping mall in the world, with more than 40 million visitors annually. Spending 10 minutes in every store would take shopper more than 86 hours to complete their visit to the Mall of America.

    Mall of the Emirates (Dubai)

    The mall of the Emirates is an entertainment and shopping resort located in Dubai. It offers a full range of shopping, leisure and entertainment facilities.

    This shopping center is home to over 450 retailers（零售商）and also features a complete range of entertainment options, including Ski Dubai, the first indoor ski destination in the middle East.

    West Edmonton Mall (Alberta, Canada)

    The fifth largest mall in the world and the largest in North America, it has the largest indoor water park, which has the biggest wave pool in the world.

    The mall has a theme park called Galaxyland, with a number of attractions, including a roller coaster. In addition, the mall has an indoor lake, which is home to four sea lions.

    The Dubai Mall (Dubai)

    The Dubai Mall is the world's largest mall in total area.

    The mall has 1,200 shops and houses an aquarium（水族馆）which earned the Guinness World Record for the world's "largest Acrylic Panel". The mall is also home to an ice rink（溜冰场）, a 250-room luxury hotel and 22 cinema screens, plus 120 restaurants and cafes. It's also famous for the unique "malls-within-a-mall" concept, with themed shopping area like Gold Souk, Fashion Island and The Grove, an indoor-outdoor streetscape with a fully retractable（可缩回的）roof.