New research has found that even if you give up smoking,the damage it has done to your genes（基因）will stay there for a much longer time.

    In the research,a team of US scientists studied the blood of 16,000 people.Among them,some were smokers,some used to smoke,and the rest were non-smokers.Scientists compared their genes and found that more than 7,000 genes of smokers had changed-a number that is one-third of known human genes.

    According to NBC News,both heart disease and cancer are caused by genetic changes.Some people may have had the changes when they were born,but most people get them in their day-to-day lives while doing things like  smoking.

When you stop smoking,a lot of these genes will return to normal within five years.This means your body is trying to heal（治愈）itself of the harmful effects of smoking.But the changes in some of the genes stay for longer.They can stay for as long as 30 years.It's almost like leaving a footprint on wet cement（水泥）一it will always be there, even when you've walked away and when the cement becomes dry.

    Although the study results may make people unhappy,there is a bright side: the findings could help scientists invent medicine to treat genetic damage caused by smoking or find ways to tell which people have heart disease or cancer ricks.

    Time is more precious than money for an increasing number of people who are choosing to live more with less—and liking it.

    Kay and Charles Giddens, two lawyers, sold their home to start a B&B hotel. Four years later, the couple dishes out banana pancake breakfast, cleans toilets and serves homemade chocolate chip cookies to guests in a B&B hotel surrounded by trees on a hill known for colourful sunsets.

    “Do I miss the freeways? Do I miss the traffic? Do I miss the stress? No,” says Ms. Giddens, “This is a phenomenon that's fairly widespread. A lot of people are revaluating their lives and figuring out what they want to do. If their base is being damaged, what's the payoff?”

    Simple living ranges from cutting down on weeknight activities to sharing housing, living closer to work, avoiding shopping malls, borrowing books from the library instead of buying them, and taking a cut in pay to work at a more pleasurable job.

    Vicki Robin, a writer, lives on a budget equal to a fifth of what she used to make. “You become conscious about where your money is going and how valuable it is,” Ms. Robin says, “You tend not to use things up. You cook at home rather than eat out…”

    Janet Luhrs, a lawyer, quit her job after giving birth and leaving her daughter with a nanny for two weeks. “It was not the way I wanted to raise my kids,” she says, “Simplicity is not just about saving money; it's about me sitting down every night with my kids to a candlelit dinner with classical music.”

    Mrs. Luhrs now edits a magazine, Simple Living, which publishes tips on how to buy recycled furniture and shoes, organize potluck dinners instead of expensive receptions, and generally how to consume less.

    Mrs. Luhrs explains, “It's not about poverty. It's about conscious living and creating the life you want. The less stuff you buy, the less money goes out of the door, and the less money you have to earn.”

    Proper diet and regular exercise seem to be the only methods for losing weight.However,the importance of water should be added in the process.While medical science has proven the positive effects of water,most people still do not drink enough each day.

    The reason why water is so important for weight loss has something to do with metabolism（新陈代谢）of fat. The liver（肝脏）is in charge of this process when it comes to turning stored fat in-to energy.However,the liver is also responsible for helping the kidneys（肾脏）that need enough water in order to function properly.The liver has to perform all the functions of the kidneys on its own when they are short of water.This means the liver doesn't have enough energy to metabolize fat.So,drinking water allows the kidneys to focus on their job and the liver to focus on its job.

    Also,studies have shown that water can make us feel full when drunk before meals.Without even making an effort,most people who drink a glass of water before a meal will eat 33% less.This is due in part to the fact that they simply get fuller quicker because the water is taking up space.The other reason is that the food will expand as soon as it hits the water-filled stomach.

    Water is important for every aspect of the health of the human body.By drinking more water and improving the health of the body,weight loss goals can be achieved with greater ease.

    Chimps will cooperate in certain ways, like gathering in war parties to protect their territory. But beyond the minimum requirements as social beings, they have little instinct to help one another. Chimps in the wild seek food for themselves. Even chimp mothers regularly decline to share food with their children, who are able from a young age to gather their own food.

In the laboratory, chimps don't naturally share food either. If a chimp is put in a cage where he can pull in one plate of food for himself or, with no great effort, a plate that also provides food for a neighbor to the next cage, he will pull at random —he just doesn't care whether his neighbor gets fed or not. Chimps are truly selfish.

    Human children, on the other hand are extremely cooperative. From the earliest ages, they decide to help others, to share information and to participate in achieving common goals. The psychologist Michael Tomasello has studied this cooperativeness in a series of experiments with very young children. He finds that if babies aged 18 months see an unrelated adult with hands full trying to open a door, almost all will immediately try to help.

    There are several reasons to believe that the urges to help, inform and share are not taught .but naturally possessed in young children. One is that these instincts appear at a very young age before most parents have started to train children to behave socially. Another is that the helping behaviors are not improved if the children are rewarded. A third reason is that social intelligence develops in children before their general cognitive (认知的) skills, at least when compared with chimps. In tests conducted by Tomasello, the children did no better than the chimps on the physical world tests, but were considerably better at understanding the social world.

    The core of what children's minds have and chimps' don't is what Tomasello calls shared intentionality. Part of this ability is that they can infer what others know or are thinking. But beyond that, even very young children want to be part of a shared purpose. They actively seek to be part of a “we”, a group that intends to work toward a shared goal.

    A video recording from Xinhua (9th, Nov. 2017) showing Arabella Kushner, US President Donald Trump's granddaughter, singing Chinese songs and reciting Chinese literary classics caused another Internet sensation (轰动) in China Wednesday night.

    In the video clip, Arabella, wearing a traditional embroidered Chinese dress, greets President Xi Jinping and his wife Peng Liyuan.

    The six­year­old sings two songs Our Fields, Beautiful Fields, and My Good Mom. The former, written in 1953 and adored by Chinese teenagers for decades, expresses one's love and affection for the motherland and nature. The latter is a popular nursery rhyme widespread in China.

    She also displayed knowledge about Chinese literature by reciting Three Character Classic, a Confucianist volume to educate young children, and two ancient poems of Li Bai, Watching the Fall of Lushan Mountain, and Departing from Baidi City in the Morning.

    Xi spoke highly of the child's Mandarin abilities and said her performance deserved an "A Plus". He said Arabella was already a star in China and hoped she would visit China one day.

    Numerous media websites and netizens reposted the video. It has received 2.3 million clicks on Sina Weibo, China's popular social media platform, as of press time.

    "What a talented and smart girl she is!" Weibo user Yumeiren said. "I hope she can make more contributions to fostering China­US friendship in the future."

    Earlier this year, during President Xi's visit to the United States, Arabella has already performed for the president and his wife at the Mar-a-Lago resort in Palm Beach, Florida, on April 6. Standing alongside her parents, Arabella sang Jasmine, a Chinese folk song with her brother Joseph.

    This may be music to your ears.

    Researchers P Jason Rentfrow and Samuel Gosling gave 3, 500 people a personality quiz. Then they asked them to name their favourite kind of music. "We found that the musical styles people like are closely linked to their personalities," Gosling says.

    RAP/HIP－HOP

    Known for their quick speech, some rappers can say more than 700 syllables (音节)a minute! If you like rap/hip－hop, you are energetic(精力充沛的)and have a way with words. You put a fresh spin on things, whether it's new moves on the dance floor or your hip style.

    CLASSICAL

    In the 18th century, classical musicians were like rock stars. Beethoven and Mozart, for example, played to packed concert halls.  If you like classical, you are open to new ideas and like debating with friends. Creative and imaginative, you can easily spend many hours scrapbooking, writing or painting.

    COUNTRY

    Country music came from the folk songs of English, Scottish, and Irish settlers of the southeastern United States. If you like country, you express your opinions well, which makes you the ideal class president or team captain. Traditional and loyal, you enjoy spending time with your family.

    POP

    Pop music is designed to appeal to(吸引)almost everyone, and it does. Each year, the industry brings in about 30 billion dollars! If you like pop, you are attractive to your friends. You can make big things happen, like planning for a huge party or inspiring your team to victory.

    ROCK/ALTERNATIVE

    In the 1950s, rock music created a brand－new culture. Teenagers, for the first time, had an identity(身份)separate from adults and children.

    If you like rock/alternative, you are a risk－taker who never accepts no for an answer. You rise to any challenge, like doing very well in a big exam or in the school play.

    If these personality profiles don't match you, that's OK. These are just for fun.