若MyClass是一个类名，且有如下语句序列 MyClass c1,*c2; MyClass *c3=new MyClass; MyClass &c4=c1; 上面的语句序列所定义的类对象的个数是

A.MyClass &(MyClass x);

B.MyClass(const MyClass &x);

C.MyClass(MyClass x);

D.MyClass(MyClass * x);

A.MyClass(MyClass x)

B.MyClass&(MyClass x)

C.MyClass(MyClass &x)

D.MyClass(MyClass *x)

A.c::setRadius(3)

B.pC-＞setRadius(3)

C.pC.setRadius(3)

D.c.setRadius(3)

A.Myclass类中必须定义一个正确的main()方法

B.Myclass类必须定义在Myclass.java源文件中

C.Myclass类必须定义在Myclass包中

D.Myclass类必须被导入

A.类名或对象名

B.仅类名

C.仅对象名

D.无法访问

A.类名或对象名

B.仅类名

C.仅对象名

D.无法访问

A.friend MyClass operator+(double, double);

B.friend MyClass operator+(double, MyClass);

C.friend MyClass operator+(MyClass, double);

D.friend MyClass operator+(MyClass, MyClass);

A.private int Count;###SXB###B.private int count; public int Count { get{ return count; } }###SXB###C.public readonly int Count;###SXB###D.public readonly int Count { get { return count; } Set { count = value; } }

A.private int Count;###SXB###B.private int count; public int Count{ get{ return count; } }###SXB###C.public readonly int Count;###SXB###D.public readonly int Count{ get{ return count; } set{ count = value; } }

A.abstract class MyClass { public abstract int getCount(); }

B.abstract class MyClass { abstract int getCount(); }

C.private abstract class MyClass { abstract int getCount(); }

D.sealed abstract class MyClass { abstract int getCount(); }