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八年级是中学生学习物理课程的起始年级,学生在小学自然课中虽已了解了一些简单的自然现象,但对这些现象所包含的物理规律、原理却一无所知,加之一些山区学校对自然课不
The eighth grade is the beginning grade of middle school students studying physics course. Although students have learned some simple natural phenomena in the natural course of primary school, they know nothing about the physical laws and principles contained in these phenomena. In addition, some mountain school pairs Natural class does not