Youth is a kind of wealth. It will gradually disappear{#blank#}1{#/blank#}time going by. What can we do to fulfill our youth?

    For one thing, it is to realize our value, and our dreams {#blank#}2{#/blank#}matters a lot.{#blank#}3{#/blank#} our dreams are, we must try hard to achieve them. When we are young, we are full of energy, and we have many{#blank#}4{#/blank#}(opportunity). We have good conditions in our lives, good memories, good understanding and so on. We should make the most of them to learn more.

    For{#blank#}5{#/blank#}, we should do as many things as possible. Of course, they must {#blank#}6{#/blank#} (rich) our lives, which can make it possible for us to gain many different experiences that are worth{#blank#}7{#/blank#}(remember) when we are old.

    Then when we are really old, and when we cannot move any{#blank#}8{#/blank#}(much), we can be proud of something{#blank#}9{#/blank#}(achieve), for we have lived our life to {#blank#}10{#/blank#} fullest.

    Many years ago, when I worked as a volunteer at Stanford Hospital, I got to know a little girl {#blank#}1{#/blank#}(name) Liz who was suffering from a rare and serious disease. Her only chance of{#blank#}2{#/blank#}(recover) appeared to be a blood transfusion（输血）from her 5-year-old brother{#blank#}3{#/blank#} had miraculously survived the same disease and had developed the antibodies needed to fight the {#blank#}4{#/blank#}(ill).

    The doctor{#blank#}5{#/blank#}(explain) the situation to her little brother, and asked the boy if he would be willing to give his blood to his sister. I saw him hesitate for a moment before taking a deep breath and saying, “Yes, I'll do it {#blank#}6{#/blank#} it can save Liz.”

    As the transfusion progressed, he lay in bed next to his sister{#blank#}7{#/blank#}smiled, as we all did{#blank#}8{#/blank#}(see) the color returning to her cheeks. Then{#blank#}9{#/blank#}(he) face grew pale and his smile faded. He looked up at the doctor and asked with a trembling voice, “Will I start to die right away?”

    Being young, the boy had{#blank#}10{#/blank#}(understand) the doctor; he thought he was going to have to give his sister all of his blood.

    One day a young man was walking along the road {#blank#}1{#/blank#} he heard a cry. It seemed to be coming from underneath a bridge. As he approached the bridge, the sound got {#blank#}2{#/blank#} (loud) and then he saw {#blank#}3{#/blank#} pitiful sight. There, lying in the muddy riverbed was a little dog about two months old, {#blank#}4{#/blank#} front legs were tightly tied with ropes. It had wounds on its head and {#blank#}5{#/blank#} (cover) with mud.

    The young man wanted to help the dog, {#blank#}6{#/blank#} as he approached, the dog started to bark. The young man did not give up. He sat down and started {#blank#}7{#/blank#} (gentle) talking to the dog. It took a long time but eventually the dog {#blank#}8{#/blank#} (stop) barking and the man was able to touch it. The young man carried the dog home, cared for its wounds, and gave it food and water. Even with all of this, the dog was still {#blank#}9{#/blank#} (friend) every time the young man approached. But the young man did not give up. Weeks went by and the man continued attending to the dog. Then one day, as the young man approached, the dog wagged its tail.

    It was consistent love and kindness {#blank#}10{#/blank#} won a lifelong friendship of loyalty.

    Teenagers have long been told that being active and {#blank#}1{#/blank#}(take) part in sports is good for their health. But new research suggests that too much sport for teenagers could negatively affect their well-being just as much as too {#blank#}2{#/blank#} sport.

    The US Department of Health and Human Services suggests that young people {#blank#}3{#/blank#}(age) between 6 and 17 work{#blank#}4{#/blank#}at least 60 minutes a day, 7 hours a week. But researchers from Switzerland say their study suggests that 14 hours of physical activity a week is best for promoting good health in teenagers. However, more than 14 hours {#blank#}5{#/blank#} (appear) to be harmful to their health. To reach their findings, they had 1,245 teenagers {#blank#}6{#/blank#}(survey) in their research.

    All participants (参与者) were required to answer questions about height and weight, sports practice, sports {#blank#}7{#/blank#} (injure) and well-being. Their well-being was measured using the Word Health Organization (WHO) Well-being Index, {#blank#}8{#/blank#} provides scores between 0 and 25. Of the participants, 50.4% were male. Almost 9% of these males were overweight. The overall {#blank#}9{#/blank#}well-being score for all participants was 17.

    The researchers divided sports participants into low, average, {#blank#}10{#/blank#}, and very high. The researchers found that participation in the low and very high activity groups were more likely {#blank#}11{#/blank#} (have) well-being scores below 13, compared with participants in the average group. The researchers found that the highest well-being scores were {#blank#}12{#/blank#} a by participants who carried out around 14 hours of physical activity a week, but beyond 14 hours resulted {#blank#}13{#/blank#} lower well-being scores.

    The researchers suggest that doctors {#blank#}14{#/blank#} care for teenagers should check their level of sports practice. Teenagers {#blank#}15{#/blank#} (probable) need a supportive and closer follow-up of their health and well-being.