Deborah Cohen is a senior natural scientist at the Rand Corp and the author of the book A Big Fat Crisis: The Hidden Forces Behind the Obesity Epidemic and How We Can End It. According to the book, there are lots of misunderstandings of obesity.

1).If you're obese, blame your genes.

    Obesity rates have increased. Yet, between 1980 and 2000, the number of Americans who are obese has doubled—too quickly for genetic factors to be responsible.

    At restaurants, a dollar puts more calories on our plates than ever before, because restaurant meals usually have more calories than what we prepare at home, so people who eat out more frequently have higher rates of obesity than those who eat out less.

2).If you're obese, you lack self-control.

    Research shows that if we are faced with too much information, we have a tendency to make poor dietary choices. Our world has become so rich in temptation that we can be led to consume too much in ways we can't understand. Even the most vigilant (警觉的) people may not be up to the task of controlling themselves.

3).Lack of access to fresh fruits and vegetables is responsible for obesity.

    Although the US Department of Agriculture estimates that fewer than 5 percent of Americans live in the “food deserts”, about 65 percent of the nation's population is overweight or obese. For most of us, obesity is not related to access to more fresh fruits and vegetables, but to the choices we make in supermarkets.

4).The problem is not that we eat too much, but that we don't exercise.

    Michelle Obama's “Let's Move” campaign is based on the idea that if kids exercise more, childhood obesity rates will decrease. But there was no significant decrease in physical activity levels as obesity rates climbed in the 1980s and 1990s. In fact, although a drop in work-related physical activity may account for up to 100 fewer calories burned, leisure physical activity appears to have increased. The problem is that we eat too much.

    Mark Twain was a great writer. He was from the USA. He was born in 1835. He was also a famous speaker. He was famous for his sense of humor. Many people liked to listen to him talk because he liked to tell some interesting stories to make people laugh all the time.

    One day Mark Twain was going to a small town because of his writing. Before he was going to leave, one of his friends said to him that there were always a lot of mosquitoes in the town and told him that he'd better not go there. Mark Twain waved (摇动) his hand and said, ＂It doesn't matter. The mosquitoes are not relatives of mine. I don't think they will come to visit me.＂

    After he arrived at the town, Mark Twain stayed in a small hotel near the station. He went into his room, but when he was just about to have a rest, quite a few mosquitoes flew about him. The waiters felt very sorry about that. ＂I'm very sorry, Mr. Mark Twain. There are too many mosquitoes in our town.＂ One of them said to him.

    Mark Twain, however, made a joke, saying to the waiter, ＂The mosquitoes are very clever. They know my room number. They didn't come into the wrong room.＂ What he said made all the people present laugh heartily.

    But that night Mark Twain slept well. Do you know why? That was because all the waiters in the hotel were driving the mosquitoes away for him during the whole night.

    If you go to the Flamingo Las Vegas, you will never forget it. It is one of the oldest Las Vegas hotels. There are lots of wonderful Las Vegas shows that will leave a good impression on you. Here are the Las Vegas shows being performed at the hotel.

   Donny and Marie

    Donny and Marieis a family-friendly variety show. It is performed by well-known Donny and Marie Osmond on all weekdays except on Sundays and Mondays. The show follows the winning formula of their 1970s TV program, incorporating dancing, humor and all of their hit songs. It starts at 7:30 pm and each ticket costs at least $91.25.

    Olivia Newton-John

    Grammy award-winning singer Olivia Newton-John is “hopelessly devoted” to perform for many of her fans, opening “Summer Nights” to perform many of her best-loved songs during her four decades long career. Alongside an eight-piece band, Newton-John will share stories about her career and sing many songs. Concert-goers can buy meet and greet tickets at $249. Regular price tickets start from $78.5. The show starts at 7:30 pm on Tuesdays, Wednesdays, Thursdays, Fridays and Saturdays.

    Vinnie Favorito

    Vinnie Favorito is a famous actor who is known to make people laugh. His jokes are very popular. Unlike other comedians who use pre-developed material, Vinnie Farorito gets his comedy from his interaction with people in the audience. The tickets start from $68.95. Performance days are six days per week except Sundays. Show time is 8:00 pm.

    X Burlesque

    X Burlesqueis a wonderful show performed by six dancing ladies. The show is filled with popular music that suits everyone's taste from rock to country and a variety of dancing styles that allow each dancer to showcase her unique talents. The tickets start from $50.26. It is a daily show at 10:00 pm.

    Joey was born in 1990 in Connecticut and now lives in North Carolina in the United States. When Joey was six, he started racing small cars in competitions. He began to win many races, but they weren't big races. His parents decided to move to Atlanta, Georgia, so Joey could compete in bigger and better competitions. When he was 12, he set a record by winning 14 races in a row at the Atlanta Motor Speedway. He continued to win many races, and finally began racing with regular-sized (正常大小的) race cars.

    When Joey was 15 years old, he met the race car driver Mark Martin. Martin is a famous NASCAR driver. NASCAR is the National Association for Stock Car Auto Racing, and it is the biggest and most popular car-racing organization in the United States. Martin was interested in Joey and thought he was “the real deal.” He said, “I am sure that he can be one of the greatest that ever raced in NASCAR. There's no doubt in my mind.”

    Martin was right. Joey started as a NASCAR driver in 2007. NASCAR has many races, and at first, Joey was only able to compete in smaller races because of his age. In his first NASCAR season, he won a championship (冠军). In 2008, he was able to compete in bigger NASCAR competitions. He competed in one of the top NASCAR racing series called the Nationwide Series, and at 18, he became the youngest winner in Nationwide Series history.

    In 2009, he became the youngest winner in another top NASCAR racing series called the Sprint Cup Series, and he also won the Nationwide Series for the fifth time. To be one of the best drivers in the history of racing, Joey has to win many more races. But at 19, he's off to a good start.

    In early November of 1942, my geology (地质学)class was supposed to go on a field trip to see the mica mine (云母矿). Although it rained, everyone showed up on time. I was the only girl in the class. We all fit into two cars.

    Near Deary, Mr. Tier, our teacher, went into a store to ask about the direction, while townsmen looked at us with curiosity. On the store owner's advice, we drove out into the hills for a few miles. Then we left the cars. We were afraid they would get stuck in the mud.

    Eventually, we located the mine near the top of the mountain. There was a very small hole, running about two or three hundred feet into the mountainside. The passage (通道) was so narrow that we could touch both sides with our hands, and not tall enough to allow us to stand up straight. The first boy held the torch; we took hold of the backs of each other's coats, in a line, and followed him in, ducking our heads. After getting in, we were disappointed because it was not the mine our teacher was looking for.

    The rain was coming down hard as we started back to the cars to go home. Back at Deary, we went into a drugstore and stood around its big heating stove to dry out. The clerk was a middle­aged lady. Seeing our entirely wet hair and clothes, she handed each of us a cup of hot water immediately and asked if there was anything wrong with any of us.

    Hiking eight miles in the rain had not reduced our interest at all. We all felt we had had a wonderful time, even if we didn't find the mine.

    Edward Latter, five, thought his dog Morse was gone for ever after cruel thieves took him away when the dog escaped from his home.

    The 10-month-old dog had been missing since December and the broken-hearted boy even wrote a heartbreaking letter to Santa and posted it to Lapland asking for his pal back for Christmas.

    A ￡10,000 reward was offered by millionaire Simon Cowell after he read about the horrific theft. Cowell said: "It's heartbreaking to see a little boy's Christmas ruined. Dogs are so important to many of us. We just hope it helps lead to the safe return of Morse."

    His parents, Amanda Hopkins and Richard Latter, had given up hope of ever seeing their pet again, until they got a call on Friday night. A couple 20 miles away from their home in Marden, Kent, had found a muddy dog walking through their street and thought it could be missing Morse. They brought the Morse in, washed him, and then called Mr Latter who was unsure until he was sent a photo, and then drove the family to the village of Meopham.

    The theatre carpenter, 40, said: "Amanda and I were still quite sceptical, but Edward saw him and recognised him straight away. He was absolutely over the moon. He said: 'I can't believe it, I have my best friend back. It's too late for Christmas but this is the best present ever.' We were still unsure if it was him though—as he wasn't responding to his name or coming to us."

    "We spent about an hour and half over there and we still were not sure, so we took him home to get his chip scanned. It was only when we took him to the vets on Saturday morning and got his chip scanned that we found out for sure. We instantly broke down in tears. We were just hugging each other, hugging Edward and hugging the dog." Added Richard.

    The family who found missing Morse said they hadn't yet heard from Simon Cowell about the ￡10,000 reward hut were happy to get him home.