物理学的发展极大地丰富了人类对物质世界的认识，推动了科学技术

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物理学的发展极大地丰富了人类对物质世界的认识，推动了科学技术创新和革命，促进了物质生活繁荣与人类文明的进步，关于物理学发展过程中的认识，下列说法正确的是

A．伽利略通过斜面实验得出自由落体运动的位移与下落时间成正比

B．牛顿第一定律是事实与逻辑思维结合的产物，不可能用实验直接验证

C．自然界中有两种电荷，库仑把它们命名为正电荷和负电荷

D．奥斯特受法拉弟发现电磁感应现象的启发发现了电流的磁效应

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