题目内容
棱镜的光学性质是改变光束的但不改变光束的
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棱镜的光学特性是不改变光束的行进方向但改变其聚散度
光线经过棱镜后一定往底发生偏转，像往棱镜顶部偏移。
通过棱镜观察物体时产生的像移量与棱镜到物体的距离无关。
Why did I drop out?I naively chose a college that was as expensive as Stanford, and all of my working-class parents’ 1) __________ were being spent on my college tuition. After six months, I couldn’t see the 2) _______ in it.I had no idea what I wanted to do with my life and no idea how college was going to help me 3) ____________.
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