在一个气候环境多变的生态系统中，生存机会最大的种群是

完形填空.
    How can we keep a feeling of balance(平衡) in our lives? How can we live with a positive attitude? To answer the two questions, let's1the following points.

    Life Isn't Fair  (公平的) Our life isn't always 2of pleasure, is it? Life doesn't always give us a hand and doing our best doesn't always bring good results.

    Failure  Failure is necessary to life, almost as necessary as the3we breathe. Failure is part of trying. The only thing that we need to think about is 4 to deal with it. In fact, failure can be a great teacher that leads( 引导)us to success.

    Loneliness It's5for us to be with our family and friends for ever. Sometimes we have to be alone. Don't be afraid when we feel lonely. Treasure(珍惜)the friendship, kindness and love we own now.

    Suffering  Growing up is not easy and pain is part. of our lives. Almost6gets hurt. Take a deep breath and give life a big smile when we suffer pain.

    Personal Responsibility(责任)  We each have a choice to be either a  7 or a loser. We should have responsibility for the choices we make. What we will have in the future depends on what we do 8.

    Self-confidence  We should believe we can do something well. Nothing in the world is difficult for the man who9himself.

    Life is like a long journey. 10with a positive attitude and look at the bright side of things. There will always be sunshine and flowers in our eyes.

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材料一：党的十六大报告指出：根据解放和发展生产力的要求，坚持和完善我国的基本经济制度。第一，必须毫不动摇地巩固和发展公有制经济。第二，必须毫不动摇地鼓励支持和引导非公有制经济发展。第三，坚持公有制为主体，促进非公有制经济发展，统一于社会主义现代化建设的进程中，不能把这两者对立起来。

材料二：近年来，随着我国经济体制改革的不断深化，许多国有企业纷纷“转轨改制”。从而使得国有企业集体企业数量越来越少，相反，在大街两旁的广告牌上出现了越来越多的“新面孔”。对此，有人认为我国的公有制经济萎缩了，随着国企数量的减少，公有制的主体地位动摇了。