题目内容：
“失败是成功之母”，这句话体现的辩证法道理是（ ）。
A.矛盾双方在一定条件下可以相互转化
B.实践是检验真理的标准
C.事物性质由矛盾的主要方面决定
D.实践是认识发展的源泉
参考答案：
答案解析：
选择题：“失败是成功之母”，这句话体现的辩证法道理是（ ）。
- 题目分类：教师资格
- 题目类型：选择题
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