明天是六一儿童节( Children's Day)，你将要怎样度过呢?和你的同学探讨一下，编设情景(主人公A、B两人)写一段对话（不少于8句）。

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正常角膜地形图可分为（）

A.圆形

B.局部陡峭形

C.椭圆形

D.领结形

E.不规则形