Physics Unit23: Light and Geometric Optics (id: 73a2af886)

本题目来源于试卷: Physics Unit23: Light and Geometric Optics，类别为 国际高中通用物理

[单选题]
Light travels fastesvptgfh5e-b,;u :d 6d *0q dmfirjxzy f(, s/9tt

A. in a vacuum.
B. through water.
C. through glass.
D. through diamond.


参考答案:  A


本题详细解析: 暂无

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