接口可以看作是仅容纳 【10】 、常量，而又不能直接生成对象的特殊抽象类。
要到微信小程序或APP查看答案哦。
实在点不开答案，可以分享到微信，
在微信里面查看答案。
APP具体操作流程为：
近年来，民生问题成为制约中国经济社会发展的突出因素，其中收入分配制度改革问题又是人们关注的焦点。阅读材料，回答问题。
材料一2003-2007年某省城乡居民收入、工资涨幅与GDP涨幅的比较
材料二中 * * 党第十七届中央委员会第五次全体会议于2010年10月15日至18日在北京举行。会议提出把保障和改善民生作为加快转变经济发展方式的根本出发点和落脚点，着力保障和改善民生，合理调整收入分配关系，努力提高居民收入在国民收入分配中的比重、劳动报酬在初次分配中的比重，健全覆盖城乡居民的社会保障体系。
（1）材料一反映了什么经济现象？
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（2）结合材料二，运用《经济生活》的有关知识，谈谈政府如何促进收入分配公平？
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（3）结合上述材料，运用历史唯物主义的知识，谈谈党中央着力保障和改善民生的依据。
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| Throughout history man has had to accept the fact that all living things must die. But people now live longer than they__1__.Yet, all living things still show the__2_of aging, which will eventually__3__death. Aging is not a disease, but as a person passes maturity (成熟期), the cells of the body and the__4__ they form do not function as well as they__5__in childhood and teenage years. The body provides less __6__against disease and is more__7__to have an accident. A number of related causes may__8__to aging. Some cells of the body have a fairly long life, but they are not__9__when they die. As a person ages, 10 of brain cells and muscle cells decreases. 11 body cells die and are replaced by new cells. In an aging person the 12 cells may not be as workable or as capable 13 growth as those of a young person. Another 14 in aging may be changes within the cells 15 . Some of the protein chemicals in cells are known 16 with age and become less elastic (有弹性). This is why the skin of old people wrinkles and 17 . This is also the reason why old people 18 in height. There may be other more important chemical changes in the cells. Some complex cell chemicals, such as DNA and RNA, store and 19 information that the cells need. Aging may affect this 20 and change the informationcarrying molecules so that they do not transmit the information as well. | ||||
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金融界按资金借贷期限长短把金融市场分为( )。
A．股票市场
B．基金市场
C．货币市场
D．证券市场
E．资本市场
晶体三极管的基区一般做得很薄，且掺杂很轻，多数载流子的浓度很高。
光纤铺设方式有哪些？