The most important lessons in life that we need to learn are the results of our poor decisions. Although time and experience are the best teachers, we also suffer from experiences such as our sacrifices, suffering and the hardships. Good judgment develops only when we truly learn from our mistakes. However, many people keep repeating the same mistakes before learning their lessons because as they say, they are just humans who are subject to making mistakes.

Our weaknesses in life can be turned into our strengths if we immediately acknowledge and recognize the fact that we mess up and learn from them. Our good or bad experiences help us learn better judgment in life. Yet, too many people are in denial and place the blame on others without realizing that the minute they take responsibility for their action is when the learning process begins. Apart from learning from our own experience, we can also learn valuable lessons from the experience of others. It allows us to observe our behavior from another angle. When we recognize our mistakes and prevent them from happening again, we are, therefore, learning.

    Quickly identifying our mistakes and changing behavior accordingly requires less time and energy than denying mistakes. However, acknowledgement of mistakes requires belief in the idea that the perfection is not possible.

    It is easier to analyze our mistakes especially when we talk to others, which can help people to sort out comments or criticisms after a mistake is made. Despite our tendency to avoid mistakes, timely acknowledgement is one of the best ways to prevent them from repeating.

    Australian scientists are trying to give kangaroo-style stomachs to cattle and sheep in order to cut the greenhouse gases they send out, which is thought to be responsible for global warming.

    Thanks to special bacteria in their stomachs, kangaroo flatulence (肠胃气胀) contains no methane and scientists want to transfer that bacteria to cattle and sheep who produce large quantities of the harmful gas.

    While the usual image of greenhouse gas pollution is a billowing smokestack, pushing out carbon dioxide, farm animals' passing wind contribute a surprisingly high percentage of total emissions in some countries.

    “Fourteen percent of emissions from all sources in Australia are from enteric methane from cattle and sheep,” said Athol Klieve, a senior research scientist with the greensland state government. “And if you look at another country such as New Zealand, which has got a much higher agricultural base, they are actually up around 50 percent,” he said.

    Researchers say the bacteria also make the digestive process much more efficient and could potentially save millions of dollars in feed costs for farmers. But it will take researchers at least three years to isolate the bacteria before they can even start to develop a way of transferring it to cattle and sheep.

    Another group of scientists, meanwhile, have suggested Australians should farm fewer cattle and sheep and just eat more kangaroos. And about 20 percent of health-conscious Australians are believed to eat the national symbol already.

    It's low in fat, it's got high protein levels and it is very clean in the sense that basically it is free-range(放养的) animal,” said Peter Ampt of the University of New South Wales' institute of environmental studies.

    Jersey Boys

    Jersey Boys is a Broadway musical that dramatizes the rise and fall of Frankie Valli and the 1960s rock 'n' roll group Four Seasons. According to Selladoor Worldwide, the group's Beijing tour will see a brand-new production of the musical, which features Luke Sheppard as director, Mark Crossland as music director and Cressida Carre as choreographer（编舞）. Since its 2005 premiere（首演）in New York, the musical has won 57 major awards worldwide.

    2:30 p.m. and 7:30 p.m., Jan 5 to Jan 13.Tianqiao Performing Arts Center, 9 Tianqiao Nandajie, Xicheng district. 400-635-3355.

    Ticket: 199-1,299 yuan ($30-200)

    Large-scale immersive show

    The large-scale immersive show Memory 5D +, directed by Ulan Xuerong, is ongoing in Beijing from Jan 4 to 7.

    The show follows the emotional entanglement between black and white spirits, representing yin and yang, and the flora girl. As a demonstration of traditional Chinese art, the show centers on cultural inheritance and includes live performance of guqin, a plucked seven-string Chinese musical instrument, guzheng, a Chinese plucked zither, konghou, an ancient plucked stringed instrument and horse-head fiddle, as well as acrobatics, Khoomei, shadow play and Mongolian folk song, even chants from The Book of Songs.

    7:30 p.m, Jan 5; 2:30 p.m./ 7:30 p. m., Jan 6; 7:30 p.m.., Jan 7. Beijing Exhibition Theater, 135 Xizhimenwai Dajie (Street), Xicheng district.

    Ticket: 180-1,080 yuan

    London Philharmonic Orchestra set to thrill Beijing

    The London Phiharmonic Orchestra will wrap up its China tour with two recitals in Being on Jan 5 and 6.

    Under the baton of Russian conductor Vasily Petrenko, the orchestra will perform H. Berlioz's overture to Beatrice et Benedict and P. I. Tchaikovsky's Fantasia on Romeo and Juliet and Variations on a Rococo Theme op.33, featuring Swedish-Danish cellist Andreas Brantelid, along with other pieces.

    7p.m., Jan 5-6. Concert Hall, National Center for the Performing Arts, 2 West Chang' an Avenue, Xicheng district. 010-6655-0000.

    Ticket: 380-1,680 yuan

    Russian army's troupe to return after restart

    The Russian army's official dance and choir troupe, the Alexandrov Ensemble, is staging five shows in Beijing from Jan 4 to 7, with a variety of songs, dances and instrumental performances.

The ensemble, also known as the Red Army Choir, was founded in 1928 and has toured the globe performing Russian folk tunes and patriotic songs using Western classical music and traditional Russian instruments.

    The repertoire on Saturday comprises 24 songs and dance pieces, including Song of the Soviet Army, The Sacred War, Moscow Nights and Festival March.

    7 p.m., Jan 5-7; 2:30 p.m., Jan 6. Opera House, National Center for the Performing Arts, 2 West Chang' an Avenue, Xicheng district. 010-6655-0000.

    Ticket: 180-1000 yuan

    A spaceship is flying to the sun in summer 2018! It will be the first-ever to a star and will be one of the biggest achievements space exploration (探险) in human history. The purpose is to study the sun's outer atmosphere and better understand how stars work.

The spaceship, with no man inside, will fly within 4 million miles of the sun's surface - right into the solar atmosphere, where the temperature is over 4,500℃. To protect the spaceship, it is covered with a 12cm-thick coating.

    The spaceship is called Parker Solar Probe and it is named after Eugene Parker, a professor from the University of Chicago. It's the first NASA spaceship to be named after a researcher who is still alive. In 1958, Eugene Parker first created the term “solar wind”-the sun sending out a flow of particles (颗粒) and energy.

    “The spaceship is going where it has never been before. It's very exciting that we'll finally get to know more about the solar wind. I'm sure there will be some surprises. There always are,” said Professor Parker.

    Parker calls it a heroic scientific space adventure, and he means that the spaceship will have to experience high temperatures and sun radiation (辐射). “The spaceship is going to do the hottest and fastest work. I love to call it the coolest hottest work under the sun,” said Scientist Fox Nasa.

    One day a professor entered the classroom and asked his students to prepare for a surprise test. They waited anxiously at their desks for the test to begin. The professor handed out the question paper, with the text facing down as usual. Once he handed them all out, he asked his students to turn the page and begin. To everyone's surprise, there were no questions but a black dot in the center of the page. The professor seeing the expression on everyone' face, told them the following, "I want you to write what you see there."

    The students were confused and got started on the inexplicable (令人不解的) task.

    At the end of the class the professor took all the answer papers and started reading each one of them aloud in front of all the students. All of them with no exceptions, described the black dot, explained its position in the middle of the sheet, imagined what the black dot stood for and so on.

    After all had been read, the classroom was silent. The professor began to explain, "I am not going to grade on you this time. I just wanted to give you something to think about. No one wrote about the white part of the paper. Everyone focused on the black dot and the same happens in our lives. We have a white paper to observe and enjoy, but we always focus on the dark spots. Our life is filled with love and care, and we always have reasons to celebrate—nature renewing itself every day, our friends around us, the job that provides our livelihood, the miracles we see every day…"

    In fact, we insist on focusing only on the dark spots—the health issues that bother us, the lack of money, the complicated relationship with a family member, the disappointment with a friend, etc. Take your eyes away from the black spots in your life. The dark spots are very small compared to everything we have in our lives, so enjoy each moment that life gives you.

The "Great Green Wall of China" project is over forty years old. In this project, people plant trees in {#blank#}1{#/blank#} part of China. Why are trees so important to us?

Because it is healthy to live around trees. They can keep us {#blank#}2{#/blank#}, just like doctors. So we call them "doctor trees".

Trees can clean the air. For people in large cities {#blank#}3{#/blank#} air pollution, trees can be very important. Workers are {#blank#}4{#/blank#} trees not just in city parks {#blank#}5{#/blank#} also along streets to help clean the air.

Some {#blank#}6{#/blank#} think that trees not just help clean the air. They are also good for our health. A study {#blank#}7{#/blank#} that people in hospitals feel better when {#blank#}8{#/blank#} trees from their rooms. And people with trees near their homes usually exercise more.

Scientists are also studying the healthy effects (作用) of trees on human minds. One effect of trees is that they make people feel happy and {#blank#}9{#/blank#}. When people go through the neighborhood with more trees, they will walk slower and talk {#blank#}10{#/blank#} often with each other.

Of course, another good effect is that "doctor trees" work for free! Writing 3