A

    I'm a TV show host. One Sunday, I took my 7-year-old daughter by the sea for lunch. On arriving at the beach, I saw JoJo, a wealthy man in the hotel business. We sat down to chat in an open air cafe while I watched my daughter enjoy herself on the swings in front of us.  Our conversation varied from business to entertainment to the economy.

    Suddenly our conversation was interrupted by a stranger, who politely asked permission to speak to me. Often people want to tell me something about my controversial TV show, when I'm out on the streets.

    He asked to speak to me privately, so we stood a bit away from my table. He said, “I'm James, 35 years old, father of a 7-year-old girl, who's very sick. She needs treatment abroad. The doctors said that if she was treated in the UK, she would probably survive. But I'm poor, so can you please help me?”

    Speechless, I stared in the man's eyes full of tears and asked how I could help. After we talked for a while, I went to sit back at the table. JoJo asked me, “What's wrong with you? Your face changed.” I told him and he was very sorry for this family and said I had the means through the media to help him. Later we headed off to our destinations(目的地).

    All weekend I thought about James, his daughter and his family. I even considered doing a special TV show to raise money for this sick child.

    On Monday morning I was at the office after I finished presenting my show, when my secretary said a man needed to speak to me. It was JoJo. He walked into my office. Actually JoJo is so busy with his hotel business that I never imagined he had time to come and see me at the studios.

 “Please, call the man with the sick child and tell him that I'll pay all expenses for his sick daughter's treatment.” JoJo said, with a check in his hand. “I've been married for 35 years. I wasn't lucky enough to have a child. I want to help this child now.” I picked up the phone to call James.

    Now James' daughter is well and living a normal life, so James and his wife are the happiest couple on earth. JoJo often visits her. I'm so happy that there are so many good people on this earth.

    When I was sixteen years old, I made my first visit to the United States. It wasn't the first time I had been abroad. Like most English children I learned French at school. And I had often been to France, so I was used to speaking a foreign language to people who didn't understand English. But when I went to America I was really looking forward to having a nice easy holiday without any language problems.

How wrong I was! The misunderstandings began at the airport. I was looking for a public telephone to give my American friend Danny a call and tell her that I had arrived. A friendly old man saw me looking lost and asked if he could help me.

    “Yes,” I said, “I want to give my friend a ring.”

    “Well, that's nice,” he said, “Are you getting married? But aren't you a bit young?”

    “Who is talking about marriage?” I replied, “I only want to give my friend a ring to tell her I've arrived. Can you tell me where there's a phone box?”

    “Oh!” he said, “There's a phone downstairs.”

    When at last we met, Danny explained the misunderstandings to me.

    “Don't worry,” she said to me. "I had so many difficulties at first. There are lots of words which the Americans use differently in meaning from the British. You'll soon get used to all the funny things they say. Most of the time, British and American people understand each other!”

    In many American schools the holiday celebrating Dr. Martin Luther King Jr.'s birthday is used as an opportunity to teach children about his life and legacy. But in too many of those same schools, Black children's extraordinary talents are still being wasted today. Nearly three-quarters of Black fourth and eighth grade public school students cannot read or compute at grade level. Black students made up only 18 percent of students in public schools in 2009-2010 but were 40 percent of students who received one or more out-of-school suspensions (暂被停学). A Black public school student is suspended every four seconds. Black students are more than twice as likely to drop out of school as White students. Each school day 763 Black high school students drop out.

    So I applaud the U.S. Departments of Education and Justice for their recent action to address harmful school discipline policies that push so many thousands of black children out of school each year and into the juvenile (青少年) justice and adult prison pipeline. If the education system is to do its part in replacing it with a cradle to college, career and success pipeline, we must end the current practice where children in the greatest need are suspended from school mostly for nonviolent offenses.

    These resources, officially known as "guidance," will help schools and districts meet their legal responsibility to protect students from discrimination (歧视) on the basis of race, color or national origin as required under Title VI of the Civil Rights Act of 1964. As we recognize the 50^th anniversary of the Civil Rights Act of 1964 and so many other important hard-won victories in the Civil Rights Movement this year, we must remember those victories could be lost without meaningful enforcement of the laws advocates fought so hard to win half a century ago.

    While the guidance does not prohibit (禁止) schools or districts from using any particular nondiscriminatory policy, it does call into question some policies that have historically excluded Black students and are of questionable educational value including "zero tolerance" discipline policies which require mandatory (强制的) consequences for certain infractions (违反), and policies that prevent students from returning to school after completion of a court sentence.

    Information of the new guidance recommendations is available at this government website for almost every school and district in the country. Check your own school district now to see whether the discipline policy is focused on creating a positive school climate and preventing misbehavior, whether consequences are clear, appropriate and consistent, and whether there is a commitment to fairness in the application of discipline.

    There is a common belief among parents that schools are no longer interested in spelling. No school I have taught in has ever considered spelling unimportant as a basic skill. There are, however, quite different ideas about how to teach it, or how much priority(优先) it must be given over general language development and writing ability. The problem is, how to encourage a child to express himself freely in writing without holding him back with spelling.

    If spelling becomes the only point of his teacher's interest, clearly a bright child will be likely to "play safe". He will write only words within his spelling range(范围). That's why teachers often encourage the early use of dictionaries and pay attention to content rather than technical ability.

    I was once shocked to read on the bottom of a sensitive piece of writing about a personal experience: "This work is terrible! There are far too many spelling mistakes." It may have been a sharp criticism(批评) of the pupils technical abilities in writing, but it was also a sad thing for the teacher who had omitted to read the composition, which contained some beautiful expressions of the child's deep feelings. The teacher was not wrong to draw attention to the mistakes, but if his priority had centered on the child's ideas, an expression of his disappointment with the presentation would have given the pupil more hope to seek improvement.

Emilia Dobek traces her interest in space and the universe back to third grade when she and her father watched a blood moon—a total lunar eclipse (月蚀)—on the roof of their house.

    Now a seventh-grader at East Prairie Elementary School, Dobek recently won the national Discovery Education Lockheed-Martin Beyond Challenge by designing a space station for travelling to Mars.

    She says that night watching the lunar eclipse started a strong desire in her that has yet to run out of fuel. So when her teacher Andrea Smeeton received information about the national challenge, Smeeton said she immediately had one student in mind.

    "I knew she would love the challenge and that she would go way beyond in her search," Smeeton said. "She immediately started researching bone density (密度) of astronauts and how to have food on Mars."

    "My design will ensure the safety of the astronauts but also make sure their comfort is out of this world," Dobek says.

    Dobek's design calls for building the MSS or Mars Storage Station to put the supplies in. It also includes the SGF or Self-Crowing Farm, and she details how it would work with the elements on Mars.

    Then there is physical and leisure activity for the astronauts under Dobek's design. A simulation (模拟装置) allows astronauts to choose their exercise machine and virtual (虚拟的) reality environment. Rooms have circular ceilings so astronauts will be able to watch downloaded shows and even see places on Earth, such as their homes.

    "I want to tell other kids to follow their passions." Dobek said. "Whatever they want to do they should push for it and always try their best."

    City trees grow faster and die younger than trees in rural forestry, a new study finds. Over their lifetimes, then, urban trees will likely absorb less CO₂ from the air than forest trees.

    As we all know, the earth would be freezing or burning hot without CO₂. However, CO₂ is a greenhouse gas, meaning it traps energy from the sun as/heat. That makes temperatures near the ground rise. Human activities, especially the widespread burning-of fossil(化石)fuels, have been sending extra greenhouse gases into the air. This has led to a rise in average temperatures across the globe.

    Studies had shown forests readily absorb CO₂, but there hadn't been much data on whether city trees grow, die and absorb CO₂ at the same rate as forest trees do. So some researchers decided to find out.

    To figure out how quickly trees were growing, researchers tracked their diameters (the width of their trunks) between 2005 and 2014. A tree's diameter increases as it grows, just as a person's waist size increases as they gain weight. About half the weight of a tree is carbon, research has shown. Most of the rest is water. Over the nine years' tracking, the researchers found city trees absorbed four times as much carbon from the air as forest trees. However, they were twice as likely to die. So over the lifetime of each type of tree, forest trees actually absorbed more CO₂.

    City trees grew faster because they had less competition for light from their neighbors. In a forest，trees tend to grow close together，shading their neighbors. Street trees also benefit from higher levels of nitrogen (氮)in rainwater. Nitrogen helps plants grow. Waste gases from gas-burning cars also contain nitrogen, thus enriching city air with nitrogen. Later, rainwater may wash much of it to the ground. Some street trees may also have better access to water than trees in the country because the underground water pipes can leak.