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The lower-level classes(known as subclasses or derived classes) ( )state andbehavior from the higher-level class(known as a super class or base class).
A.request
B.inherit
C.invoke
D.accept
B.inherit
C.invoke
D.accept
参考答案
参考解析
解析：低层的类(也称子类或派生类)从高层类(也称为超类或基类)中继承了状态和行为。
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