题目

如图所示,一束光线垂直入射到1/4圆形玻璃砖的平面上,请画出光线通过玻璃出射到空气中的光路图。   答案:                                                                  Is there ________ in today's newspaper? I've no idea. [  ] A.something important B.anything important C.important thing D.nothing
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