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下列程序中横线处应填入的语句是()。 classBase { public: voidfun(){cout<<"Baseoffun"<<endl;}}; classDerived:publicBase { voidfun() { //显示基类的成员函数fun cout<<"Derivedoffun"<<endl; } };

A.fun();

B.Base.fun();

C.Base::fun();

D.Base->fun();


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