经济改革的目的在于促进发展,稳定、繁荣社会。阅读下列资料,回答问题:

(1)根据资料一,这番话为罗斯福就任美国总统后所说。请问:他的这番话是在什么严重局势下说的?目的何在?为此,他采取了哪些措施?
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(2)根据资料二,这番话为赫鲁晓夫下台后所说。那时,苏联谁主政?这番话说明了什么现象?你怎样认识赫鲁晓夫的反思?(注意:不得抄原文)
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(3)根据资料三,四川老人这番感慨说明了什么? 为什么他的家乡会发生这样大的变化?

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