根据短文理解，选择正确答案填空。 

    Jim is a junior high school student. He gets up 16:30 every morning. His home is near his school. He 2home after breakfast. He goes to school on foot. This is good for his 3. He has four lessons in the morning. He has lunch at home. After lunch he goes to school again. In the afternoon, Jim has lessons . He likes English and PE lessons. He has PE lessons on Tuesday and Friday. He is good at4football and basketball. He is also good at the high jump. His PE teacher likes5 very much. He often plays football with his classmates after school.

阅读材料，运用《市场考察》的有关知识，简要回答问题。

    东北地区曾是新中国工业的摇篮，经济以重工业为主。工业结构单一、传统产品占大头，“原”字号和“初”字号产品居多，即原材料和初级产品占比很高。国有企业活力不足，民营经济发展不充分，产品结构不适应市场变化。2016年5月25日，******在黑龙江考察调研时强调，要闯出一条新形势下振兴老工业基地发展的新路。在优化产品结构中，要着力改造升级“老字号”，深度开发“原字号”，培育壮大“新字号”。

   联系上述材料，从我国基本经济制度的角度，说明怎样才能实现改造升级“老字号”，深度开发“原字号”，培育壮大“新字号”。