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【多选题】
变质岩是地壳中原有的岩浆岩或沉积岩，由于地壳运动和岩浆活动等造成物理化学环境的改变，使原来岩石的成分、结构和构造发生一系列变化，所形成的新的岩石。变质岩的结构主要有( )。
A.
结构
B.
碎屑结构
C.
碎裂结构
D.
变晶结构
E.
变余结构
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