Test analysis: the relationship between quantitative change and qualitative change. Quantitative change is the premise and foundation of qualitative change, and qualitative change is the inevitable result of quantitative change. A thousand miles of embankment, collapsed in the ant nest. A drop of water can pierce a stone, but a rope can saw wood. Don't do little evil, don't do little good, and don't embody the principle of quantitative change and qualitative change. Petunia should hold its nose to reflect the main contradiction. Regular movements in the sky are not for Yao's survival, nor for evil things. So item 23 is wrong. Choose item c in this question.
Comments: This topic is to let students acquire and interpret idioms with knowledge and analyze problems with philosophical principles. The difficulty is moderate. Answer this question, understand and analyze the four questions, and clarify the meaning and philosophical truth of the four idioms. The difficulty of this question is moderate.