1. public class GoTest { 
2. public static void main（String[] args） { 
3. Sente a = new Sente（）； a.go（）； 
4. Goban b = new Goban（）； b.go（）； 
5. Stone c = new Stone（）； c.go（）； 
6. } 
7. }
8. 
9. class Sente implements Go { 
10. public void go（） { System.out.println（”go in Sente.”）； } 
11. } 
12. 
13. class Goban extends Sente { 
14. public void go（） { System.out.println（”go in Goban”）； } 
15. } 
16. 
17. class Stone extends Goban implements Go { } 
18. 
19. interface Go { public void go（）； } 
What is the result？（） 

A. public class Circle implements Shape { private int radius； }
B. public abstract class Circle extends Shape { private int radius； }
C. public class Circle extends Shape { private int radius； public void draw（）； }
D. public abstract class Circle implements Shape { private int radius； public void draw（）； }
E. public class Circle extends Shape { private int radius；public void draw（） {/* code here */} }
F. public abstract class Circle implements Shape { private int radius；public void draw（） { / code here */ } }

A. public class Employee extends Info implements Data { public void load（） { /*do something*/ } }
B. public class Employee implements Info extends Data { public void load（） { /*do something*/ } }
C. public class Employee extends Info implements Data { public void load（） { /*do something */ } public void Info.load（） { /*do something*/ } }
D. public class Employee implements Info extends Data { public void Data.load（） { /*dsomething */ } public void load（） { /*do something */ } }
E. public class Employee implements Info extends Data { public void load（） { /*do something */ } public void Info.load（）{ /*do something*/ } }
F. public class Employee extends Info implements Data{ public void Data.load（） { /*do something*/ } public void Info.load（） { /*do something*/ } }

A. double getSalesAmount（） { return 1230.45； }
B. public double getSalesAmount（） { return 1230.45； }
C. private double getSalesAmount（） { return 1230.45； }
D. protected double getSalesAmount（） { return 1230.45； }