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选题目的:通过开展对蚯蚓的特点和习性的调查研究,初步认识蚯蚓对人类的益处,增强保护蚯蚓、维护生态平衡意识。
Objectives: Through the research on the characteristics and habits of earthworms, we can know the benefits of earthworms to human beings, enhance the protection of earthworms and maintain the awareness of ecological balance.