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【简答题】
眼球好像一架照相机，晶状体和角膜的共同作用相当于一个______透镜，它把来自物体的光会聚在视网膜上，形成物体的像；人眼看到绿色植物是因为植物______了绿光（填“吸收”或“反射”）；我们能够从不同方向看到同一片白云，是因为白云对光产生了漫反射，当人的眼睛近视后，把来自远处物体的光会聚在视网膜前方，应配戴______透镜进行矫正．
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