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【多选题】
2019年我国经济社会发展工作,要坚持稳中求进工作总基调。以下描述正确的是( )A.
着力防范化解重大风险，保持经济持续健康发展和社会大局稳定
B.
坚持并丰富发展改革开放宝贵经验，对标重要领域和关键环节改革，确保干一件成一件
C.
坚持和完善以公有制为主体、多种所有制经济共同发展的基本经济制度
D.
深入实施区域协调发展战略，实现中国经济高质量发展
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