class One {   public One foo() { return this; }  }  class Two extends One {  public One foo() { return this; }  }  class Three extends Two {   // insert method here  }  Which two methods, inserted individually, correctly complete the Three class?()A、 public void foo() { }B、 public int foo() { return 3; }C、 public Two foo() { return this; }D、 public One foo() { return this; }E、 public Object foo() { return this; }

class One {   public One foo() { return this; }  }  class Two extends One {  public One foo() { return this; }  }  class Three extends Two {   // insert method here  }  Which two methods, inserted individually, correctly complete the Three class?()

  • A、 public void foo() { }
  • B、 public int foo() { return 3; }
  • C、 public Two foo() { return this; }
  • D、 public One foo() { return this; }
  • E、 public Object foo() { return this; }

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Eponyms is a process that puts an existing word of one class into another class.()

Lucy and Lily is both in Class One.()

有如下程序: include using namespace std; class ONE { public: virtual void f() { 有如下程序:include <iostream>using namespace std;class ONE{public:virtual void f() { cout << "1"; }};class TWO: public ONE{public:TWO() { cout << "2"; }};class THREE: public TWO{public:virtual void f() {TWO::f(); cout << "3"; }};int main(){ONE aa, *p;TWO bb;THREE cc;p=cc;P->f();return 0;}执行上面程序的输出是【 】。

one of the distinctive features about the british class system is that it has also retained a hereditary aristocracy. ()

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有如下程序:#includeiostreamusing narnespace std;class ONE{int e;public:ONE():c(O){cout1;)ONE(int n):c(13){cout2;}};class TWO{ONE oriel;ONE one2,public:TWO(int m):one2(m){cout3;}};int main(){TWO t(4);return O;}运行时的输出结果是A.3B.23C.123D.213

有下列程序:includeusing namespace std;class ONE{ public:virtual void f(){COUt 有下列程序:include<iostream>using namespace std;class ONE{public:virtual void f(){COUt<<"1";}};c1assTWO:public ONE{public:TWO(){cout<<"2";}};class THREE:public TWO{pub

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The red flower goes from one to()in the class.Athe otherBothersCanotherDother

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class One {  void foo() {}  }  class Two extends One {   //insert method here  }  Which three methods, inserted individually at line 14, will correctly complete class Two?()A、 int foo() { /* more code here */ }B、 void foo() { /* more code here */ }C、 public void foo() { /* more code here */ }D、 private void foo() { /* more code here */ }E、 protected void foo() { /* more code here */ }

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