class Member{
public:
virtual void sports(){cout<<"Sports!";}
};
class Father: public Member{
public:
virtual void sports(){cout<<" Badminton!";}
};
class Mother: public Member{
public:
virtual void sports(){cout<<"Aerobics!";}
};
class Children: public Member{
public:
virtual void sports(){cout<<"Doing skipping!";}
};
母亲的体育锻炼项目为跳健美操，
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