蝙蝠以大毒王闻名于世，却是人类实实在在的良师益友。它具有控制害虫、种子传播、植物授粉等不可或缺的生态作用和巨大的经济价值，且在健康长寿、生物仿生等方面具备重要的研究意义。作为唯一会飞行的哺乳动物，人们对它的观察与研究从未停止。蝙蝠声纳系统的发现见证了人类探求真理的曲折历程和顽强精神。蝙蝠拥有“心眼”这样的超能力，人类依据其回声定位和形体结构制造出蝙蝠机器人，未来应用及发展前景非常广阔。蝙蝠还是中国福文化的代表，值得我们永远颂扬。论文讲述了蝙蝠的优缺点、身体结构、生活习性和夜视能力以及蝙蝠机器人的相关知识，旨在引领学生全面辩证地看待蝙蝠的问题，培养学生的思辨意识和能力，体会仿生学的奥妙，传承中华传统福文化思想精髓，树立人与自然和谐共生的发展观。

A simple two-step hydrothermal method synthesized four different CdS/Fe₃O₄ photocatalysts with varying ratios of mass of CdS to Fe₃O₄. The composition and morphology of the prepared samples were investigated using X-ray diffraction (XRD), Raman spectrum, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Solid UV reflectance spectra testing found that CdS/Fe₃O₄ nanocomposites had good light absorption throughout the spectral range, promoting their photocatalytic properties. Under visible light irradiation, CdS/Fe₃O₄ (2:5) with a mass ratio of 2:5 exhibited excellent photocatalytic performance, with a degradation rate of 98.8% for rhodamine B. Furthermore, after five cycles of photocatalytic degradation reaction, the rhodamine B degradation rate remained at 96.2%, indicating that the photocatalysts have good photocatalytic stability.