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【单选题】
2011年是“十二五”开局之年。《国民经济和社会发展第十二个五年规划》指出，要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，营造各种所有制经济依法平等使用生产要素、公平参与市场竞争、同等受到法律保护的体制环境。回答问题。 我们之所以要坚持和完善公有制为主体、多种所有制经济共同发展的基本经济制度，是由于它这种经济制度（） ①适合生产力发展不平衡、多层次的状况 ②有利于发展社会生产力，实现同步富裕 ③有利于增强经济发展活力 ④反映了每个公民的愿望和要求A.
①③
B.
②④
C.
①④
D.
②③
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A.
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B.
Darwin wrote that life forms change the environments around them.
C.
According to Darwin, change is the essence of life forms.
D.
Darwin wrote that life forms change spontaneously.
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A.
Apollo
B.
Dionysus
C.
Hestia
D.
Athena
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