Given： 
Which two classes use the Shape class correctly？（）
- 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*/}}
正确答案:B,E
答案解析:有
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