9.82 若已执行语句Class<;?>; p1=Student.class，其中Student定义了两个构造方法：Student(){}; Student(int stuNo){}，则下面通过p1 来获取Student类对象的语句中，错误的是（ ） A: Object s1 = p1.newInstance(); B: Student s1 = p1.newInstance(); C: Constructor<;?>; cons = p1.getConstructor( new Class[]{int.class});Object obj1 = cons.newInstance(new Object[]{1}); D: Constructor<;?>; cons = p1.getConstructor( int.class);Object obj1 = cons.newInstance(1);

python中，下列哪种语法表示Student从Person中继承。（ ） A: class Student: Person B: class Student extends Person C: class Student (Person) D: class Student: class Person

下面是几条定义类的语句，不能被继承的类是（ ）。 A: abstract class Student {} B: class Student{} C: public class Student{} D: sealed class Student{}

将student表中class字段删除的命令是（）。 A: DROPTABLEstudentclass B: ALTER TABLE student class C: ALTER TABLE student DROP class D: DROP TABLE student ALTER class

下面声明正确的是（ ）。 A: abstract final class Student{} B: public abstract class Student{} C: class Student extends Person,Parent{} D: private class Person{}

查询Student表中的所有记录的Sname、Ssex和Class列。 A: select Sname,Ssex,Class from student B: show Sname,Ssex,Class from student C: select * from student D: select Sname,Ssex,Class from course

Conversation 7~11:Listen to part of a conversation between a studentand a professor. What do the student and the professor mostly discuss A: The student’s need to attend class B: The student’s potential grade in class C: The student’s stay in the hospital D: The student’s absence from class

He is a student of ____. A: Class Second B: the Class Two C: Class Two D: Second Class

My sister is a student of （）. A: the First Class B: Class One C: One Class

下列有关类声明的代码片段，正确的是（ ）。 A: package school;import java.sql.*;private String name;class Student{} B: package school;class Student{}import java.sql.*; C: import java.sql.*;package school;class Student{} D: package school;import java.sql.*;class Student{}