Eyesight（视力) plays a very important role in our daily life. Every waking moment, the eyes are working to see the world around us. Over forty percent of Americans worry about losing eyesight, but it's easy to include steps into our daily life to ensure healthy eyes. Here are five suggestions for a lifetime of healthy eyesight：

    Schedule（安排）yearly exams(检查). {#blank#}1{#/blank#} Experts advise parents to bring babies 6 to 12 months of age to the doctor for a careful check. The good news is that millions of children now can have yearly eye exams and following treatment, including eyeglasses.

    Protect against UV rays (紫外线). Long-term stay in the sun creates risk to your eyes. No matter what the season is, it's extremely important to wear sunglasses. {#blank#}2{#/blank#}

    Give your eyes a break. Two-thirds of Americans spend up to seven hours a day using computers or other digital products. {#blank#}3{#/blank#} Experts recommend that people practice the 20/20/20 rule: every 20 minutes, take a 20-second break and look at something 20 feet away.

    {#blank#}4{#/blank#} As part of a healthy diet, eat more fruits and vegetables each day. Vitamins (维生素) C and E help protect eyesight and promote eye health.

    Practice safe wear and care of contact lenses (隐形眼镜). Many Americans use contact lenses to improve their eyesight. While some follow the medical guidance for wearing contact lenses, many are breaking the rules and putting their eyesight at risk. {#blank#}5{#/blank#} Otherwise, you may have problems such as red eyes, pain in the eyes, or a more serious condition.

A．Eat your greens.

B．Eye care should begin early in life.

C．They can properly protect your eyes.

D．Stay in good shape by taking more vitamins.

E．Parents usually don't care about their own eyesight.

F．Always follow the doctor's advice for appropriate（适当的）wear.

G．This frequent eye activity increases the risk for eye tiredness.

    True happiness is such a rare commodity(有价值之物)that the whole of the world is continuously seeking it and failing to find it. Why is happiness such an elusive(难捉摸的) thing? Is it that it cannot simply be achieved? Or is it that it is not where all of us have been looking for it?

    What is it that we consider happiness? This is how I see it: Happiness is what you feel when what you want to happen happens. And the then we can conclude that unhappiness is what we feel when what we want to happen does not happen.

    The main keyword in definition is "want". The whole trouble starts when we want something. Every moment of our lives we keep on wanting something or the other. Only a small percentage of all our wishes is fulfilled in spite of all our endeavors(努力). The frustration of failing to fulfill most of our wishes sets in. We start feeling weighed down. Desire is a seed which grows fruits of unhappiness. Actually the trouble is that we demand too much. The only solution to this problem is to break out of this cycle of desires and struggles.

    Actually, happiness and unhappiness are two sides of the same coin. The desire for happiness is like asking only for the light and not for darkness. But there is not much difference between light and darkness. It is matter of degree only.

    If we think deeper, we will realize that it is this pain of failure, pain of frustrated desires which is of greater significance to us. It is actually like good health. One can only define health as an absence of diseases. In order to have good health we strive to avoid diseases. You cannot purchase or achieve good health directly. You have to take steps which keep your body free of diseases. Then only the organs of body keep functioning properly and you experience good health. Similarly, when one destroys the root cause of unhappiness, the problems are over. And the root cause of all our unhappiness is DESIRE.

    Now people are very concerned about the food problem. Steve Wilson prefers organic fruit, delivered right to the doorstep. He is willing to pay for it. If this is not possible, the 30-year-old computer technician will spend the extra money at the supermarket to buy organic food.

    “Organic product is always better,” Wilson said. “The food is free of pesticides(农药), and you are generally supporting family farms instead of large farms. And more often than not that it is locally grown and seasonal, so it is more tasty.” Wilson is one of the growing number of shoppers buying into the organic trend, and supermarkets across Britain are counting on more like him as they grow their organic food business. But how many shoppers really know what they are getting, and why are they willing to pay a higher price for organic product? Market research shows that Wilson and others who buy organic food can generally give clear reasons for their preferences—but their knowledge of organic food is far from complete. For example, small amounts of pesticides can be used on organic products. And about three quarters of organic food in Britain is not local but imported(进口)to meet growing demand. “The demand for organic food is increasing by about one third every year, so it is a very fast-growing market,” said Sue Flock, a specialist in this line of business.

    Many experts say that Billy Wilder changed the history of American movies. He is often called the best movie maker Hollywood has ever had. He was known for making movies that offered sharp social comment. Wilder was one of the first directors to do this.

    Billy Wilder was born in 1906 in the former Austro-Hungarian Empire. Billy Wilder started law school in Vienna, Austria. However, he began reporting for a Vienna newspaper after graduation. By the 1920s, he was writing movies in Germany. However, the Nazis had risen to power in the nation. Wider was Jewish, and he recognized that he had no future in Nazi Germany. In 1933, he went to Paris. There he directed a movie for the first time. It was called “The Bad Seed”. Then he received word that producers in the United States had accepted one of his scripts. Billy Wilder left Europe for America.

    In America he formed a writing team with Charles Brackett. The two writers created many films together. Wilder and Brackett wrote several successful movies. One was the nineteen thirty-nine movie, “Ninotchka”, starring Greta Garbo. Ernst Lubitsch directed the film. Wilder always praised this man as a friend and teacher whose humor and expert direction greatly influenced his works.

    In 1954, Billy Wilder became an independent producer. The nest year, Wilder's first movie as an independent filmmaker was a huge success. It was “The Seven Year Itch”. In 1959, Wilder made a funny movie that was very popular. I.A.L. Diamond joined Wilder in writing “Some Like It Hot”.

    By the 1980s, Wilder no longer was considered the most unusual, creative movie-maker in Hollywood. In recent years, however, Billy Wilder received many more awards and honors. Critics praised his gifts to movie making. In 1987, the Academy of Motion Picture Arts and Sciences gave him the Irving G. Thalberg Memorial Award. It is the highest award a producer can receive.

    Mother Teresa was born in Yugoslavia on August 27th, 1910. She attended the government school near her home until she was eighteen. At that time, some doctors and nurses from Yugoslavia were working in India, and they often wrote to school about their work. She decided to join them one day.

    When she finished school, she went first to Britain. Then a year later she went to India, where she began to train to be a teacher. After training, she was sent to Calcutta, where she taught geography at a school and soon after she became headmistress. (女校长)

    However, although she loved teaching, in 1946 Mother Teresa left school and went to work in the poor parts of Calcutta. Later she trained to become a nurse in Panta, and then began her work helping the poor and comforting the dying in the streets of the city. Slowly others came to help her, and her work spread to other parts of India.

    Mother Teresa is now a well-known person. Many photos have been taken of her as she traveled the world to open new schools and hospitals in poor countries. In 1979, she was given the Nobel Peace Prize for the lifetime of love and service she has given to the poor.

    The annual World Economic Forum took place in Davos, Switzerland, in Jan. 23-26, 2018. What did Chinese entrepreneurs(企业家)speak in the forum? Are there some quotable quotes for you?

    ★Jack Ma, founder and executive chairman of Alibaba Group

    "I think globalization cannot be stopped — no one can stop globalization, no one can stop trade. If trade stops, the world stops. Trade is the way to dissolve (结束) the war not cause the war," said Ma in Davos, "Google, Facebook, Amazon and Alibaba — we are the luckiest companies of this century. But we have the responsibility to have a good heart, and do something good."

    ★Richard Liu, founder and chief executive officer of JD

    "Business is not only a way to make money but also a way to contribute yourself, to help people," Liu said in a speech in Davos. "How can we face the fractured (分化的) world? That's the topics of the Davos this year. I think a very important thing in business is cooperation. If we can unite, work together, if we work very closely, I think we can bring more hope to the people and we can build more trust between the people, countries and companies and partners," he said.

    ★Jane Sun, CEO of Ctrip

    "Tourism is a sunrise industry. Since I entered Ctrip, every year there are new comers, which, first of all, shows that tourism is booming." Sun told Sina.com in Davos. "We invested heavily in ABC.A refers to AI, B is big data, and C is cloud computing. As we continue to expand overseas, these three will be very good weapons for us. So we think those mean opportunity," she said.

    ★Hu Xiaoming, president of Aliyun

    "In 2018, people will see the development in various countries more closely connected with cloud computing. More manufacturing enterprises and financial institutions will start to use 'cloud', and cloud computing will increase the efficiency of technology and finance," Hu told Xinhua in Davos.