If it really is what's on the inside that counts, then a lot of thin people might be in trouble.

    Some doctors now think that the internal(内部的) fat surrounding important organs like the heart or liver could be as dangerous as the external fat which can be noticed more easily.

    “Being thin doesn't surely mean you are not fat,” said Dr Jimmy Bell at Imperial College. Since 1994, Bell and his team have scanned nearly 800 people with MRI machines to create “fat maps” showing where people store fat.

    According to the result, people who keep their weight through diet rather than exercise are likely to have major deposits of internal fat, even if they are slim.

    Even people with normal Body Mass Index scores can have surprising levels of fat deposits inside. Of the women, as many as 45 percent of those with normal BMI scores (20 to 25) actually had too high levels of internal fat. Among men, the percentage was nearly 60 percent.

    According to Bell, people who are fat on the inside are actually on the edge of being fat. They eat too many fatty and sugary foods, but they are not eating enough to be fat. Scientists believe we naturally store fat around the belly first, but at some point, the body may start storing it elsewhere.

    Doctors are unsure about the exact dangers of internal fat, but some think it has something to do with heart disease and diabetes(糖尿病). They want to prove that internal fat damages the body's communication systems.

    The good news is that internal fat can be easily burned off through exercise or even by improving your diet. “If you want to be healthy, there is no shortcut. Exercise has to be an important part of your lifestyle.” Bell said.

    When I was six, Dad brought home a dog one day, who was called “Brownie”. My brothers and I all loved Brownie and did different things with her. One of us would walk her, another would feed her, then there were baths, playing catch and many other games. Brownie, in return, loved each and every one of us. One thing that most touched my heart was that she would go to whoever was sick and just be with them. We always felt better when she was around.

    One day, as I was getting her food, she chewed up(咬破)one of Dad's shoes, which had to be thrown away in the end. I knew Dad would be mad and I had to let her know what she did was wrong. When I looked at her and said, “Bad girl,” she looked down at the ground and then went and hid. I saw a tear in her eyes.

    Brownie turned out to be more than just our family pet. She went everywhere with us. People would stop and ask if they could pat her. Of course she'd let anyone pat her. She was just the most lovable dog. There were many times when we'd be out walking and a small child would come over and pull on her hair. she never barked(吠) or tried to get away. Funny thing is that she would smile. This frightened people because they thought she was showing her teeth. Far from the truth, she loved everyone.

    Now many years have passed since Brownie died of old age. I still miss days when she was with us.

    It was dawn of March 21, 2018. Gary Messina was on his morning run along New York City's East River. Suddenly something caught his eye – a large 60-year-old man balancing on the four-foot-high fence that guarded the path from the water. As Messina got closer to the scene, the man took a step forward and slipped into the dark river below.

    When Messina reached nearer, the man was struggling in the water, clearly unable to swim. Other joggers also heard the man's cry. David Blauzvern and John Green dropped their phones and keys on land and jumped in. “People had called the police, but it was unclear when they'd get there.” says Green. “We just reacted.” Messina joined them in the river. Just as the jumper was losing strength, Blauzvern take hold of him. The pair were about 30 yards from the seawall when Messina and Green caught up to them. They seized the man, with Blauzvern supporting his back and Messina and Green holding him up from either side. As the men made their toward the concrete seawall that stretched (延伸) for blocks in each direction, Blauzvern had an awful realization: there was no way out of the river.

    By now, a crowd had gathered on land. “A rescue boat is on its way,” someone yelled to them. Swimming forward was getting tougher by the minute. The jumper, who was six foot two and weighed around 260 pounds, was heavy in his rescuers' arms. After ten minutes, they managed to get to the river's edge. “I've never been so out of breath,” says Blauzvern.

    Fifteen minutes after the men had jumped into the river, the two-man rescue boat appeared. But because it couldn't risk getting too close to the seawall, the men had to swim out to it. “I was completely out of energy at this point,” says Blauzvern. The men in the water pushed the jumper while the men in the boat pulled him up and, finally, to safety. The man they had saved was taken to the hospital for evaluation(评估). Details on his condition have not been known. As for the rescuers, each of them was at work by 10:30 a.m. “I was a bit late,” admits Blauzvern, smiling. “But I had a good excuse.”

    A team of UK researchers recently compared the performances of 120 women and 120 men in a computer test involving switching between tasks of counting and shape recognition.

    Men and women were equally capable when tasks were handled one at a time. But when the tasks were mixed up, there was a clear difference. According to the paper published in the journal BMC Psychology, both women and men slowed down and made more mistakes as the switching became more rapid. But the men were slower, taking 77 percent longer to answer, whereas women took 69 percent longer.

    To make the experiment more relevant to day-to-day life, researchers tried a second test. A group of women and men were given eight minutes to complete a series of everyday tasks, such as finding restaurants on a map, doing simple math problems, answering a phone call, or deciding how they would search for a lost key in afield. Once again, women outperformed men in the test, particularly in the key-searching task.

    “It suggests that in a stressed and complex situation women are more able to stop and think about what's going on in front of them,” researcher Keith Laws of the University of Hertfordshire, UK, told BBC News. “In contrast, men had a slight impulsiveness（冲动）, answering without giving much thought to their responses.”

    So where do women get the ability to keep organized under pressure better than men? Researchers believe that it has its roots in evolution. In early human communities, women had to keep an eye on children while cooking meals. Meanwhile, men only needed to focus on hunting.

    Some people are never right. They never have good luck. They usually do the wrong things and say the wrong things. And even if what they say and do is OK, they say it or do it at the wrong time. So these people always have problems. They often break glasses. They sometimes miss buses or trains.

    Mr. Neff is different. He is always right. He is never wrong. He usually has good luck. He hardly has problems. He never misses buses and trains. Even though he really misses them, it is always the fault of the buses and the trains.

    Mr. Neff knows almost everything. He doesn't ask questions. He answers questions. He never says “I don't know”．

    I don't know Mrs. Neff. It seems that not many people know her. I sometimes want to know about her. Is she always right? Or maybe she is always wrong? Does she often break glasses or miss buses and trains?

Does she have problems? I really want to know!

    With the New Year weeks approaching, you're looking forward to watching the splendid fireworks shows that will welcome 2019 worldwide. Unfortunately, visually impaired and blind people can't experience this joyful celebration. That may change soon thanks to Feeling Fireworks, a fireworks experience invented by the Disney Research Lab in Switzerland.

    To experience the show, users stand before a large flexible screen, place their hands at the base of the screen and move them around to feel the fireworks. Alternatively, their hands can be situated in the center of the screen, where the initial explosions happen, and then moved across to explore other fireworks.

    As the fireworks begin to explode, five nozzles (喷嘴) at the back of the screen start to shoot water, creating movement of water imitating the show. One specializes in the "blooming flower effect", another reproduces the "crackle" effect, and the rest take care of rockets and explosions. A computer controls the timing, and Feeling Fireworks allows users to experience fireworks similar to those in the sky.

    Paul Beardsley, who led the research team, says, "We want blind, visually impaired, and sighted people to all try Feeling Fireworks, and to have a shared and enjoyable memory of a fireworks evening." And the screen displaying the vivid images created by water makes it fun for everyone.

    The low-cost technology is still in its early stage, with only a 66 percent success rate. However, the team plans to continue improving the experience and believes the day when everyone will be able to enjoy the thrill of fireworks shows is not far. When ready, Feeling Fireworks will initially be available only at the Disney theme parks, and then hopefully, at fireworks shows worldwide.