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【单选题】
“芳催,流水前波让后波”包含的哲学道理是( )A.
矛盾是事物发展的动力
B.
新事物代替旧事物是事物发展的总趋势
C.
事物是相互联系的统一
D.
事物的发展是量变和质变的统一
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A.
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B.
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C.
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D.
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