问题
问答题 简答题
狭义光合细菌的特点。
答案
参考答案：
1.地球上最早出现的具有原始光能合成体系的原核生物
2.具多种异养功能（固氮、脱氮、固碳、硫化物氧化等）
3.与自然界中的物质循环（氮、磷、硫）有密切关系
4.在自然净化过程中起重要作用
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狭义光合细菌的特点。
参考答案：
1.地球上最早出现的具有原始光能合成体系的原核生物
2.具多种异养功能（固氮、脱氮、固碳、硫化物氧化等）
3.与自然界中的物质循环（氮、磷、硫）有密切关系
4.在自然净化过程中起重要作用
Once, a circle lost a piece of its own. The circle wanted to be whole, so it went around, looking for its piece. But because it was not complete, it could only roll (滚) very slowly. It enjoyed the flowers and the sunshine the way. It talked with worms. It found lots of different pieces, but of them fit. So it left them all by the side of the road and kept on for the lost piece. Then one day the circle found a piece that fit . The circle put the piece into . It could be whole with nothing lost. It was so happy and began to roll. As it was a perfect circle, it could roll very fast, too fast to see flowers or talk to worms. It realized how different the world was when it rolled so quickly. It felt so sad it stopped, left its found piece by the side of the road and rolled very slowly. Sometimes we are perfect when we lose something. A man has everything is poor in some ways. He will never have hopes, dreams or something . He will never know someone loves him or someone is giving him something he has always wanted or never had. We couldn’t be perfect. But we must be brave enough to love, strong enough to forgive, kind enough to share with others and clever enough to know there is enough love around us and then we can always have a wonderful time in our life.
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