class PrimaryStudent extends Student{
protected double grade;
public PrimaryStudent(String name,int age,int score,double grade){
super(name,age,score);
this.grade=grade;
}
public double getGrade(){
return this.grade;
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荒天雷
class PrimaryStudent extends Student{
protected double grade;
public PrimaryStudent(String name,int age,int score,double grade){
super(name,age,score);
this.grade=grade;
}
public double getGrade(){
return this.grade;
}
}