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材料二：党的十七大强调要着力提高低收入者收入，逐步提高扶贫标准和最低工资标准，建立企业职工工资正常增长机制和支付保障机制。创造条件让更多群众拥有财产性收入。保护合法收入，调节过高收入，取缔非法收入。初次分配和再分配都要处理好效率和公平的关系，再分配更加注重公平。决心构建“橄榄型”收入分配结构。

A

When I drove to work yesterday, I met a traffic jam（交通阻塞）.As I looked out of my window, a young man was walking on the street. He was walking to the bridge. There were some homeless men with their cups around there. The young man went to one of them. He brought out some money, said a few words to him and put the money into his cup. He continued（继续）to walk and then saw another homeless man. He stopped for a minute, said a few words and then gave the man a candy.

And then he saw the next homeless man. He was shivering（冷得发抖）because of coldness. The young man now stopped and gave his scarf to him. He then said goodbye to him with a big smile and went away in the snow.

At that moment, I was in tears（流泪）.I gave this young man my best wishes with love and blessings.

玉米为雌雄异花植物，给你一株黄色（显性）玉米，请你从下列方案中选取一个既可判断其基因型又可保持其遗传特性的可能方案