Li Lei wishes       a policeman when he grows up.

    Humans like to live and work in groups. Language is the “cement(胶合剂)”____holds these groups together. Language is part of culture. Culture, in this sense,____ (mean) all those customs, skills, and attitudes that are part of the behavior of a ____ (particularly) group. What you think ____ what you want in life are all affected by the culture of the group in which you ____( raise). Groups of people live in different ways. They may have different skills, organizations, and art forms. Their family life may be completely different from yours.

    Human beings are inventive animals. They can decide to change their cultures in order to meet various ____(situation). Of all living things, human beings are the ____(clever). They can choose ____(live) in many environments and in a wide variety of ways. Only human beings can choose where and how they want to live and then improve the physical environment to help ____(they)realize these choices.

    Acquiring the wisdom to make wise choices ____ (be)the lasting challenge of being human.

    Joris Hutchison, 10 years old, of Seattle, has worked hard all year to save cheetahs（猎豹）from the very real threat of extinction. He has raised more than $14,000 to purchase GPS devices, ____ follow and protect the animals. He earns money by selling lemonade, flowers and T-shirts, and by ____(organize) skating parties and a garage sale. What moved the public ____(be) that Joris donated all that he raised to a wildlife conservation organization and shelter in Namibia where he and his mother have volunteered for ____ past three summers.

    As the group's ____(young) of all the volunteers, Joris prepares food, cleans enclosures（围场）, and creates improvement ____(item) for the cheetahs that live there, all of whom ____(injure) or raised by human beings in the past. The shelter protects cheetahs in the wild by convincing farmers not ____(shoot) the animals and instead, to allow the ones accused ____ killing farm animals to be fixed with GPS devices. “I've learned that everyone can make a ____(different), even if you're just a kid!” Joris told Gloria Barron Prize for Young Heroes. “You just have to start somewhere.”