根据短文理解, 从A、B、C、D四个选项中选择最佳答案填空。

    Have you ever taken a tour of a zoo? If so, it's likely that the person who led you through the zoo helped you to learn a lot about the   1.

    Amelia Rinas is a high school student who lives in Ohio. One day Amelia 2   the Cleveland Metroparks Zoo. The moment she saw the gorillas there, she left 3  about them. She wondered if they were getting the right foods.

    Amelia read all she could about gorillas and learned what they like to 4 . Then she started a "gorilla garden". She grows the fruit and vegetables that gorillas love to eat. Some of those foods are tomatoes, carrots, and strawberries. Amelia works with other volunteers in her community who use their 5   time to help Amelia and the gorillas. When they take the food to the zoo, the gorillas are thrilled. They look so excited!

    Who is responsible for Amelia's interest in animals? Amelia is a member of Roots& Shoots. Its members are young people who   6   animals and the environment. They helped Amelia understand that animals need our care too. The slogan on the Roots &Shoots Website is "Inspire, take action, make a difference." These words tell  7 the group is all about. The group urges(力劝) kids and grown-ups, including parents and teachers, to do what they can to make a   8where they live.

    When interviewed about her project, Amelia said, "I joined Roots & Shoots  9    I wanted to make a difference in the world."

      There are many 10 to make a difference in the world. Amelia Rinas' gorilla garden has helped make gorillas happier and healthier.

    Many of us like watching them in the wild. The wild animals usually make us pleased, cheer us up or sometimes get us scared. But do you know that they can also teach us something?

    Geese, for example, teach us a very good lesson about1.In autumn, Canada geese fly to the warm south to2the cold winter. At the very beginning, they lift off in no order. But3they form a V shape, with one bird leading the group.

    This V shape helps geese to4energy. When the front bird moves its wings up and down, the resulting force of the air lifts the next one. This continues down the line. And it helps the whole group fly more easily. The bird5has the hardest job.

    When it gets tired, it moves behind, and6bird moves into the lead. By sharing the role, the group can travel long distances. Geese flying in a V shape can fly 70 percent farther without7than birds flying alone.

    During the long flying journey, geese communicate with one another. They honk (鸣叫) to8the birds that are flying in front to keep up the speed. They also cheer each other up.9they are working towards a common goal.

    What have we learned from the lovely geese's experience and skills? Work together! Whether it is our 10 lives or our jobs, we need the help of other people. We need the spirit of teamwork!

    John comes from England. When he comes to China, his friends tell him something about the traffic 1 in China. People drive on the2 in England, but in China, people should drive on the right. Before you cross street, you must look 3 ways look left, look right and look left again. 4 remember the traffic moves on the right in China, or some cars and some buses may5 you.

    In the morning and the evening. when people go to work and 6 back from work, the streets are very busy(累忙的). 7  it is the most dangerous(危险的)time. When you want to 8 the road, you must 9 for the green "walk" sign.

    In China, you can always  10  the policeman for help when you lose your way.

    At the beginning of this century, medical scientists made a interesting discovery(发现). We are bulk not just of flesh (肉)and blood but also of time. They were1to show that we all have a body clock inside us, which controls the2and fall of our body energies. It can 3us different from one day to the next.

    The idea of a body clock should not be too4because the lives of most living things are controlled by the 24-hour-night-and-day cycle. We feel 5 and fall asleep at night and become 6 and energetic during the day. Most people will have a bad feeling 24-hour cycle is 7. For example, people who are not used to working at night can find that luck  (缺少)of sleep causes them to 8 badly at work.

    Besides (除了) the daily cycle of sleeping and waking, we 9 have other cycle which lasts longer than one day. Most of us would 10 that we feel good on some days and not so good on others. Sometimes our ideas seem to be so active, and at other times they are not.