Three students _____ in this university come from the South.
A. of ten
B. out of in ten
C. out of ten
D. in tens
Now she is free ________ the control of her parents.(A) out(B) away(C) from(D) off
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阅读以下说明和java代码，将应填入(n)处的字句写在对应栏内。[说明]有若干教师，每个教师只有姓名，一个教师可以指导多名研究生；每名研究生有姓名和研究方向，程序最后输出每个教师指导的所有研究生的姓名和研究方向。[Java程序]public class Teacher {String name;int top=0;Student[] student=new Student[20];public Teacher() {}public Teacher(String name) { this.name=name;}boolean add(Student stu){int len=this.student.length;if (top＜len-1) {this.student[top]=siu;(1);return true;}elsereturn (2);}void disp(){System.out.println(“指导老师"”+this.name);System.out.println(“研究生:”);for(int i=0;i＜(3);i++){System.out.println(“姓名:”+this.student[i].name+“\t研究方向:”+this.student[i]. search);}}public static void main(String[] args){Teacher t[]={new Teacher(“李明”),new Teacher(“王华”)};Student s1 = new Student(“孙强”，“数据库”);Student s2 = new Student(“陈文”，“软件工程”);Student s3 = new Student(“章锐”，“计算机网络”);if(! t[0].add(s1)) {System.out.println(“每个老师最多只能指导20个学生!”);}if(! t[0].add(a2)) {System.out.println(“每个老师最多只能指导20个学生!”);}if(! t[1].add(s3)) {System.out.println(“每个老师最多只能指导20个学生!”);}for(int i=0;i＜2;i++)(4);}}class (5) {String name;String search;public Student(){}public Student(String name,String search){this.name=name;this.search=search;}String getName(){return this.name;}String getSearch(){return this.search;}}
以下程序段的输出结果为 ( )int j=2；switch(j){case 2：System.out.print("two.")；case 2+1：System.out.println("three.")；breakdefault：System.out.println("value is"+j)；break；}A．two.three.B．two.C．three.D．value is 2
阅读以下程序说明和java代码，将应填入(n)处的字句写在对应栏内。[说明]本程序接收输入的学生信息，包括学号、姓名、成绩，原样输出信息并计算学生的平均成绩。其中学生类Stud除了包括no(学号)、name(姓名)和grade(成绩)数据成员外，还有两个静态变量 sum和num，分别存放总分和人数，另有一个构造函数、一个普通成员函数disp()和一个静态成员函数avg()用于计算平均分。[Java代码]public class Stud {public int no;public String name;public double grade;public (1) double sum=0;public static int num=0;public Stud(int no,String name,double grade) {this.no = no;this.name = name;this.grade = grade;this.sum=(2);(3);}public static double avg(){return (4);}public void disp(){System.out.println(this.no+"\t"+this.name+"\t"+this.grade);}public static void main(String[] args) {Stud []students = {new Stud (1,"Li", 81), new Stud(2,"Zhao",84.5), new Stud(3,"Zhang", 87)};System.out.pfintln("no\tname\tgrade");students[0].disp();students[1].disp();students[2].disp();System.out.println("avg="+(5));}}
public static void main（String[]args）{Integer i=new Integer（1）+new Integer（2）；switch（i）{case3：System.out.println（"three"）；break；default：System.out.println（"other"）；break；}}Whatistheresult？（）A.threeB.otherC.Anexceptionisthrownatruntime.D.Compilationfailsbecauseofanerroronline12.E.Compilationfailsbecauseofanerroronline13.F.Compilationfailsbecauseofanerroronline15.
现有：importjava.util.*；classAddStuff2{publicstaticvoidmain（String[]args）{TreeSett=newTreeSet（）；if（t.add（"one"））if（t.add（"two"））if（t.add（"three"））add（"four"）；for（Strings：t）System.out.print（s）；}}结果为：（）A.oneB.onethreetwoC.onetwothreeD.onetwothreefourE.fouronethreetwoF.编译失败
11.publicstaticvoidmain（String[]args）{12.Integeri=uewInteger（1）+newInteger（2）；13.switch（i）{14.case3：System.out.println（”three”）；break；15.default：System.out.println（”other”）；break；16.}17.}Whatistheresult？（）A.threeB.otherC.Anexceptionisthrownatruntime.D.Compilationfailsbecauseofanerroronline12.E.Compilationfailsbecauseofanerroronline13.F.Compilationfailsbecauseofanerroronline15.
