Experts generally consider BMI for kids to be a good measure of body fat, at least among heavier children. But in some cases it might be misleading. Athletic kids, in particular, may fall into the overweight category when they are actually muscular.

    Your child's BMI is important, but it is only a piece of the picture. If a BMI percentile (体重指数) indicates that your child is not within the healthy range, she needs a complete weight and lifestyle evaluation with a doctor.

    Experts recommend that kids of all ages and all weight categories follow these healthy guidelines to keep weight in control. It's easy to remember them as “5 — 2 — 1 — 0” every day.

    5 > Everyone in your family needs five servings of vegetables and fruit. Keep serving them even if kids don't eat them. If they see a food over and over, they're more likely to try it in the end.

    2 > Limit TV-watching to no more than 2 hours a day. Family members who use other “screens”—video games or computers, for instance, get less TV time. And kick the TV out of all bedrooms.

    1 > Get 1 hour of physical activity. Add up the minutes each family member is moving —it should be 60 minutes or more for each person. Start small and keep adding if necessary.

    0 > That's how many sugar-sweetened beverages you should have a day. Juice drinks such as lemonade and fruit punch, sodas, tea, and coffee can all have added sugar. Stick to water and reduced-fat milk instead.

    China's Singles Day, which falls on Nov. 11 every year, has far surpassed its U. S. counterparts of Black Friday and Cyber Monday—combined Last year, Americans spent a record $ 12.8 billion online between Thanksgiving Day and Cyber Monday. It's impressive until you compare it to the $ 17.6 billion in sales made by Chinese consumers in a single 24-hour period during 2016's Singles Day.

    Singles Day is known as “Bare Sticks Day” or “Bare Branches Day” in Chinese-because the date “11/11” looks like bare branches and “one” is the loneliest number. Singles Day began in the early 1990s in the dorm rooms of Nanjing University when a group of single friends were sorry about the lack of significant others and decided to mark the day by organizing activities as a group of singles and reducing their loneliness by buying themselves a gift.

    Then in 2009, sensing a break between the sales period of China's National Day on Oct. 1 and Chinese New Year in late January or early February, Alibaba's Jack Ma saw an opening: sell to comfort lonely hearts.

    The first year did only $7.5 million in sales, but just 8 years later, shoppers spent $ 25.3 billion, or 168.2 billion yuan, this year—a 40 percent jump from last year's $ 17.6 billion. For comparison, Black Friday and Cyber Monday in the U. S. only netted $ 6.79 billion in 2016. Amazon doesn't release sales figures for July's Prime Day, but it's pretty safe to believe the not-quite-national-holiday doesn't come close to $ 25 billion.

    “More than $ 25 billion in one day is not just a sales figure,” Alibaba Group CEO Daniel Zhang said in a statement. “It represents the desire for quality consumption of the Chinese consumer, and it reflects how merchants and consumers alike have now fully accepted the combination of online and offline sales.”

    In our everyday lives we meet situations in which we take many things for granted（不去重视）.We only treasure things when they are gone.This is a sad truth of human nature.One day,I found myself as a witness to a similar situation.

    One evening,I left work and boarded the train.After entering,I noticed something unusual.The center of the car had a few empty seats while both ends were crowded with people standing.I didn't pay much attention and sat down on one of the empty seats.I sensed a funny smell.It wasn't long before I noticed a homeless person sleeping on three seats in front of me.He was bleeding from his nose.Why wasn't anyone helping him?

    His clothes were torn and he was giving off a strange smell.Along with the smell,his eyes were dull,watery and red.Occasionally he scratched himself and people looked at him as if he had committed a crime.As the train stopped at stations and more people came in they covered their noses and faced away from him.All the seats around him were empty.

    Suddenly,he began to swear at the people around him.A plain clothes policeman who looked like a construction worker took out his certificate and showed it to the homeless man.The officer,not wanting to touch the homeless man, told him his rights and directed him to exit the train.As the officer walked the man out of the train,the homeless man turned around and said "MY HOME!" and started crying.

    A man doesn't value things until they are gone.If he didn't have a home,at least he had freedom.Now he has neither.No one wants to help someone who won't help himself.

    It was a warm April day when a big fat envelope came in the mail from the only college I had ever imagined attending. I tore open the packet. My eyes were fixed on the word “congratulations”. I don't remember ever smiling so wide.

    Then I looked at my financial(财政的) package.

    The cost of Dream School's tuition(学费), room and board was around ＄40,000 ? An impossible sum! How could I afford to attend? What good reasons did I have to go there when three other fine colleges were offering me free tuition? My other choices were good, solid schools even if they weren't as famous as my first choice.

    In my mind, attending my dream university would be the only way to realize my dream of becoming a world-class writer. My parents understood how I felt. They told me that even though it would be a financial problem, I could go wherever I would be happiest. But as I was always careful with money, I wasn't sure what to do.

    One of the schools that offered me a full ride had an informational dinner one night in the spring. Considering my parents' financial difficulties, I decided to drive the 45 minutes and attend. At first, all I had planned to do was smile politely, eat free food, listen quietly. But I surprised myself.

    At dinner the president of the university talked about the wonderful activities on campus (校园) including guest lectures and social gatherings. He also made it perfectly clear that free food would be offered at all future events. He continued with explanations of professors, class sizes, activities, and sporting events on campus. As he spoke, I began to realize that this school, though not as good as my first choice, might be the best one for me. It seemed small yet with many great programs. It seemed challenging yet caring.

    As the president ended his speech, we clapped politely and pushed back our chairs. As I walked out of that door, a feeling of comfort washed over me. Looking at the campus that night, I realized that I would be spending the next four years right there.

    In all honesty, my university is not as well-known as my “dream” university. However, it turned out to be the right choice of schools for me.

    Our family loves the snow and cheers at the first good storm of the season. While others may think of Florida, we dream of a cabin vacation in New York's Allegany State Park.

    One particular trip, I recall, was just a bit more memorable than the rest. What we now refer to as the snow pants incident began accidentally enough. My husband, Bernie, and our 2-year-old daughter, Faith, were building a snow fort while I sledded down a nearby slope.

On the way back up from one trip, I saw a small stone tumbling down the track I had just made. I was puzzled, since all the other rocks were buried under several feet of snow, as I stood and wondered about the stone—it jumped! This was no stone. This was a mouse.

    Now, I love nature, but that doesn't include mice. I loudly protested the invader, and Bernie, coming to my rescue, assured me that this was not a mouse but a mole, as if that mattered. A mouse or a mole I still didn't like it.

    Bernie and I stood for a few minutes watching the creature disappear from the path into the furry white and come back out again. But soon it disappeared and I headed up the hill again.

    Shortly after I left, my husband screamed out, saying that the mole had gone up the leg of his snow pants. You have to understand Bernie can be quite a joker, and I smelled a rat. Not wanting to be a sucker and fall for another one of his jokes, I laughed it off. When he started running for the cabin, though, I stopped laughing and decided maybe this was for real.

    “Don't you dare take that thing into the house!” I yelled. But like a flash, Bernie was already dashing through the cabin's front door, with his snow pants, the mole and all. If it were me, I'd have been down to my long underwear right there in the snow without a second thought.

A few minutes later Bernie appeared. We relished the rest of our winter vacation, drinking lots of hot chocolate, sitting beside the fireplace and admiring nature—from a safe distance.

    On a rainy winter day, several decades ago, a British artist named Christopher got on a train in Oxford to go to London. When he began his journey, he never knew that it was the beginning of almost 40 years of accidents and near death experiences.

    During the journey, the train fell into an icy river, killing 12 passengers. Christopher managed to swim back to the river bank. He only had a broken leg.

    Two years later, Christopher was on a plane from London to Manchester when a door suddenly opened and he fell out. A few minutes later, the plane crashed; 27 people were killed. Christopher was so lucky that he landed in a haystack (干草堆).

    A few years later, he was hit by a bus, but again had no serious injuries. Then a year after that, he was driving on a mountain road when he saw a truck coming straight at him. He drove the car off the road, jumped out, landed in a tree — and watched his car fall 100 meters down the mountain.

    "There are two ways you can look at it," Christopher said. "I'm either the worlds unluckiest man, or the world's luckiest." When a reporter asked Christopher what he thought, he chose the "luckiest" one.

    Two years ago, aged 71, Christopher bought his first lottery ticket (彩票) in 50 years and won more than 2 million. After this, a TV company in America said they wanted him to make an advertisement. At first he accepted, but then he changed his mind. Christopher said he would not fly to Los Angeles for the filming, because he did not want to push his luck. Who knows? If he had accepted the invitation, maybe he would have had another accident. But Mr. Christopher is a lucky man. If he had had another accident, he probably would have survived that too!