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    Basketball players are usually very tall. Because they need to put the ball into the basket. Other sports players may be shorter than them.

    Short people often have better balance (平衡) than tall people, so they don't fall over very often. In some sports the players must have good balance, for example, table tennis, they don't need to have long legs to run fast! Some of the fast runners in the world are not very tall. Some people are tall and some are short. The tallest man in the world is 2.41 meters tall. Today young people in many countries grow taller than their parents. This is because they eat better than their parents. Good food can help children grow.

根据短文内容，回答下列问题。

    Last weekend, I took a trip to the popular National Air and Space Museum. I found that lots of children all over the place were happy. If ever in my life I felt like a child again, this was surely the place.

    As I went into the cockpit(驾驶舱)of an airplane, I felt that my dream of becoming a pilot came true. Everywhere I walked, I was close to airplanes. Very big spaceships and rockets were in different houses. There were kinds of cool things on show. You could join in many experiments to explore(探索)interesting things on science. The National Air and Space Museum is an excellent place to visit.

    Oh, make sure you eat something before you come into the museum because the only place you can eat something here is a Boston Market fast food restaurant. The price of the food in it is very high. I had a Big Mac meal for almost $9!

    A group of friends from Italy wanted to do something different for their vacation. They decided to drive through Australia in a jeep. The journey was a real adventure(冒险) but sometimes the long hours on the road made them tired.

    It was Bill's tum to drive. Tony, Allan and Jeff were sleeping. Bill was thinking of the cool drink and shower in the next town when suddenly something jumped in front of the jeep. Bill tried to stop the jeep, but it was too late, he hit it. When the four friends got out, they saw a kangaroo lying on the road. They thought it was dead. What could they do? It wasn't their fault(过失).I was an accident.

    The friends were sad, but they wanted to have a photo of the kangaroo to show everyone back home, Jeff got his camera, and the others picked up the kangaroo and stood it up against the jeep. The boys decided to dress up the kangaroo. They put a cap, sunglasses and a jacket on him. They took several photos with the kangaroo.

    Suddenly, to their surprise, the kangaroo moved its head moved its body, and jumped away with Bill's cap, Allan's sunglasses, and Tony's jacket-with his passport and one thousand dollars.

    Everyone has good days and bad days.

    Sometimes, you may feel that you're on top of the world and all the questions on your maths test might seem cays. But sometimes you feel frightened or you lose things, and you cannot focus on your school work.

    For more than 20 years, scientists have suggested that high self-esteem(自尊)is the key to success. They said that kids who feel good about themselves do better in school and have fewer emotional problems than kids who have a low opinion of themselves. , Now, new research shows that focusing just on building self-esteem may not be helpful. In some cases, having high self-esteem can bring bad results if it makes you less likeable(可爱的)or more upset when you fail at something.

    "Forget about self-esteem," says Jennifer Crocker, a psychologist at the University of Michigan, US." It's not the important thing. Crocker's advice may sound a bit strange because it is good to feel good about oneself. Studies show that people with high self-esteem are less likely to be sad, anxious, shy, or lonely than those with low self-esteem.

    But, after reviewing about 18, 000 studies on self-esteem, Roy Laumeister, a psychologist at Florida State University, has found that building up your self-esteem will not necessarily make you a better person. People with high self-esteem tend to think more of themselves while people with low self-esteem are more likely to rely on their friends when they need help.

    Researchers say it is best to listen to and support other people. Set out to create or build something. If you fail at something, try to learn from the experience. "The host therapy(药方)is to know your own weak points, "Vohs says. "It's OK to say, I'm not so good at that, 'and then move on."