On Monday, the Centers for Disease Control and Prevention predicted that 42% of Americans could be overweight by 2030. Our expanding waistlines lead to not only a medical problem, but according to a recent article In The New York Times, it could also endanger personal safety in some situations—in an airplane crash, for example.

    The New York Times' Christen Negroni reports that engineers and scientists are questioning whether airplane seats are adequately constructed to protect overweight travelers. Government standards for airplane seat strength（强度）— first set moe than 60 years ago — require that the seats be made for a passenger weighing 170 pounds (77kg). Today, the average American man weighs nearly 194 pounds (88kg) and the average woman 165 pounds (75kg). Negroni reports:

    “If a heavier person completely fills seat, the seat is not likely to behave as intended during a crash,” said Robert Salazar, the leading scientist at the Center for Applied Biomechanics at the University of Virginia. “The energy absorption that is built into the aircraft seat is likely to be overpowered and the passengers will not be protected properly.”

    “Nor would the injury be limited to that passenger only,” Dr. Salzar said. “If a seat or a seat belt fails,” he said, “those people who are seated nearby could be endangered from ‘the uncontrolled movements of the passenger'.”

    Most complaints about airplane seats focus on their lack of comfort and high ticket price, and whether overweight passengers should be made to buy two seats. But The New York Times' article brings up another reason to feel anxious about flying. Investigators of the issue got in touch with the airplane seat and seat belt makers, but they refused to comment on the problem. Experts agreed that crash testing should be done with overweight dummies （人体模型）. Both airplane seats and seat belts should be tested, they said.

    Fortunately, however, according to Nora Marshall, a senior adviser at the National Transportation Safety Board, the board's investigators have never seen an accident involving a commercial plane in which the weight of a passenger was a problem.

    When my sister Gina was born, she had a problem with her heart. Her heart was pretty bad in the beginning and she stayed in the hospital for a month. The first few years were very difficult because she was very sick. She had five operations before she was three years old. She had trouble walking, playing with other children, and going to school.

    Although Gina couldn't laugh and talk, we all knew that she just needed love and care. Our parents wanted to take Gina to a special place in Florida where she could swim with dolphins. Gina was afraid of swimming with them because she had never been around dolphins before. We had also never traveled that far as a family.

    When we got to Florida, we saw where the dolphins lived. It was a place where kids with special needs like Gina could come and spend time. I thought it was going to be a vacation, but it wasn't. Gina had to work hard every day for a week.

    The trip was amazing .Gina laughed and clapped(拍手) when she saw the dolphin, and the dolphin splashed (溅起水花) when it saw Gina. They swam together all day. Gina was able to move her body more than she normally did at home. Mom and dad were proud of Gina. I was, too.

    We all have to make decisions all the time, and we have an abundance of choices, ranging from tiny issues to vital ones. Unfortunately, people often find it hard to make decisions{#blank#}1{#/blank#} If you would like to improve your skill of decision making, here are four suggestions for you. Don't expect to have it all.

    {#blank#}2{#/blank#} You can't order every delicious dish on the menu. And there will be paths not taken, careers not chosen, to name a few. You can imagine some “what if' situations if you must, but do not let them take up too much space in your brain.

    {#blank#}3{#/blank#}

    It's often good to think through your decisions. But don't overdo it. Research can reach a point where returns begin to reduce, which makes it confusing more than clarifying. Many good decisions can be made based as much on intuition (直觉) as on careful assessment of endless data.

    Don't delay making decisions.

    Yes, there is a time to put off making a decision. Perhaps you need more information{#blank#}4{#/blank#} Or it's likely that you wait for a less stressful time. Just don't wait so long that the decision is made by your own indecisiveness.

    Don't be hard on yourself.

    You decide to go on a voyage. You choose an expensive liner. Everything should work out just right. Only you didn't expect a bug that ran around on the ship, making you and your family sick for five days{#blank#}5{#/blank#}But please remember it is unavoidable sometimes.

A. Don't spend too much time thinking.

B. It is an important source of information.

C. Don't count on emotion to make decisions.

D. Maybe you wish to consult with your advisor.

E. You may regret making such a stupid decision.

F. That means the skill of good decision-making counts a lot.

G. Decisions force us to close the door on other possibilities.

    Is smile just a facial expression? Of course not! It is not only used to express pleasure, affection, and friendliness, but also the commonest way to show our good will perfectly without saying anything. A Chinese saying runs： “Never hit a person who is smiling at you.” It is a time-proven fact that smile is a language all its own—a universal language—understood by the people of every nation in the world. We may not speak the same tongue as our foreign neighbors, but we smile in the same tongue. We need no interpreter for thus expressing love, happiness, or good will.

    One day while shopping in a small town in southern California, it was my misfortune to be approached by a clerk whose personality conflicted with mine. He seemed quite unfriendly and not at all concerned about my intended purchase. I bought nothing, and marched angrily out of the store. On the outside stood a young man in his early twenties. His expressive brown eyes met and held mine, and in the next instant a beautiful, brilliant smile covered his face. The magic power of that smile made all bitterness within me melt, and I found the muscles in my own face happily responding. “Beautiful day, isn't it?” I remarked, in passing. Then, obeying an impulse(冲动), I turned back. “I really owe you a debt of gratitude,” I said softly. His smile deepened, but he made no attempt to answer. A Mexican woman and two men were standing nearby. The woman stepped forward and eyed me inquiringly. “Carlos, he no speak English,” she volunteered. “You want I should tell him something?” At that moment I felt changed. Carlos' smile had made a big person of me. My friendliness and good will toward all mankind stood ten feet tall. “Yes,” my reply was enthusiastic and sincere, “tell him I said, 'Thank you!' “Thank you?” The woman seemed slightly confused.

    I gave her arm a friendly pat as I turned to leave. “Just tell him that.” I insisted. “He'll understand, I am sure!”

    Oh, what a smile can do! Although I have never seen that young man again, I shall never forget the lesson he taught me that morning. From that day on, I became smile-conscious, and I practice the art diligently, anywhere and everywhere, with everybody.

The World's Largest Libraries

    British Library (United Kingdom, London)

    The British Library was created by Act of Parliament in 1972; previously, the library had been part of the British Museum, where the famous circular reading room had accommodated researchers including Karl Marx, who worked on 'Das Kapital' there, as well as Oscar Wide and Mahatma Gandhi. The British Library is now housed in a new building in St. Pancras, London, where its treasures include two Gutenberg bibles, the Lindisfarne Gospels and one of Leonardo da Vmci's notebooks.

    Library of Congress (United States, Washington, D. C.)

    Founded in 1800 with the private collection of Thomas Jefferson, the Library of Congress is in effect the USA's National Library. It receives two copies of everything published in the United States. The Library of Congress wag burned by the British Army in 1812, and severely damaged by fire again in 1851. The collection includes many rare books, drawings and two Stradivarius violins.

    New York Public Library

    The New York Public Library developed gradually in the nineteenth century from the merger and acquisition (收购兼并) of a number of public and private collections; it has many branches in different districts of New York City. It remains a structure which combines public and private finance and governance. Treasures held at the library include a Gutenberg Bible.

    Russian State Library (Moscow)

    Founded in 1862 as the Moscow public library and museum, this collection became the State Library in 1925. In consequence it receives copies of all Russian publications, and also holds large collections of maps, journals, music scores and recordings. Its possessions include the Archangel Gospel, a codex in the Slavonic language dating from 1092.

Every year, thousands of teenagers participate in programs at their local art museums. But do any of them remember their time at museum events later in life? A new report suggests that the answer is yes--and finds that arts-based museum programs are credited with changing the course of alumni's（毕业生的） lives, even years after the fact. 

The Whitney Museum of American Art, the Walker Art Center and the Museum of Contemporary Art, Los Angeles recently asked researchers to conduct à study to find out how effective their long-standing teen art programs really are. They involved over 300 former participants of four programs for teens that have been in existence since the 1990s. Alumni, whose current ages range from 18 to 36, were invited to find out how they viewed their participation years after the fact. 

Among the alumni surveyed, 75 percent of them thought the teen art program experience had the most favorable impact on their own lives, beating the family, school and their neighborhoods. Nearly 55 percent thought that it was one of the most important experiences they had ever had, regardless of age. And two-thirds said that they were often in situations where their experience in museums affected their actions or thoughts. 

It turns out that participating in art programs also helps keep teens keen about culture even after they reach adulthood: Ninety-six percent of participants had visited an art museum within the last two years, and 68 percent had visited an art museum five or more times within the last two years. Thirty-two percent of alumni work in the arts as adults. 

Though the study is the first of its kind to explore the impact of teen-specific art programs in museums, it reflects other research on the important benefits of engaging with the arts. A decade of surveys by the National Endowment for the Arts found that the childhood experience with the arts is significantly associated with people's income and educational achievements as adults. Other studies have linked arts education to everything from lower dropout rates to improvement in critical thinking skills.