16秋北邮大学英语3阶段作业

16秋北邮大学英语3阶段作业

一、单项选择题（共9道小题，共90.0分）

1.下面关于 Java 的理解错误的是（）。

A.Java 是一个面向对象、平台独立、多线

程、动态的编程环境

B.Java 是一个完整的计算平台，包括完整

的程序开发环境和运行环境

C.Java 是一个通用的编程环境，使用它可

以开发完成各种计算任务的通用程序

D.Java 是一个 Web 程序开发和运行环

境，使用它只能开发 Web 应用程序

知识

点:

阶段作业一

学生答案: [D;]

标准

答案:

D

得分: [10] 试题

分值:

10.0

2.(错误)

下面不是包的用途的是（ A ）

A.规定一组类的对外界面

B.防止命名冲突

C.访问控制

D.方便类的查找和使用

知识

点:

阶段作业一

学生答案: [D;]

标准

答案:

A

得分: [0] 试题

分值:

10.0

3.在Java中，用Package语句说明一个包时，该包的层次结构必须是（）

A.与文件的结构相同

B.与文件目录的层次相同

C.与文件类型相同

D.与文件大小相同

知识

点:

阶段作业一

学生答案: [B;]

标准

答案:

B

得分: [10] 试题

分值:

10.0

4.关于Eclipse透视图说法错误的是（）

A.每个透视图都定义了工作台中各个视图

的初始设置和布局

B.一个工作台窗口包含多个独立的透视

图，但同一时刻只有一个透视图是对用

户可见的

C.每个透视图都有自己的视图和编辑器，

用户可以在各个透视图间切换

D.透视图的布局是可以改变的，但改变多

次后无法再恢复到初始设置

知识

点:

阶段作业一

学生答案: [D;]

标准

答案:

D

得分: [10] 试题

分值:

10.0

5.(错误)

关于Eclipse工作空间说法错误的是（ C ）

A.它是用户计算机磁盘上划出的一块区

域，用来存放用户的工作资料

B.它以项目为单位组织文件和目录

C.它将各种资源组织成树形结构，文件夹

位于树的根部，项目位于树枝位置

D.用户对工作空间的每次操作都能在

Eclipse集成环境中得到同步

知识

点:

阶段作业一

学生答案: [B;]

标准

答案:

C

得分: [0] 试题

分值:

10.0

6.在Eclipse中开发JAVA程序的步骤不包括（）

A.创建一个Java项目

B.手动创建Java源程序

C.手工运行JDK命令

D.运行Java程序

知识

点:

阶段作业一

学生答案: [C;]

标准

答案:

C

得分: [10] 试题

分值:

10.0

7.下面叙述中哪个是正确的（）

A.当编译Java程序时，源程序中的每个类

都将被分别编译成不同的文件，每个文

件名都与所对应的类名相同，并以扩展

名class结束

B.当编译Java程序时，源程序中的每个类

都将被分别编译成不同的文件，每个文

件名都与所对应的类名相同，并以扩展

名javax结束

C.当编译Java程序时，源程序中的所有类

都将被编译到同一个文件中，文件名与主类的类名相同，并以扩展名class结束D.当编译Java程序时，源程序中的所有类

都将被编译到同一个文件中，文件名与主类的类名相同，并以扩展名javax结

束

知识

点:

阶段作业一

学生答案: [A;]

标准

答案:

A

得分: [10] 试题

分值:

10.0

8.下面关于Java 的理解错误的是（）

A.Java 是一个面向对象、平台独立、多线

程、动态的编程环境

B.Java 是一个完整的计算平台，包括完整

的程序开发环境和运行环境

C.Java 是一个通用的编程环境，使用它可

以开发完成各种计算任务的通用程序

D.Java 是一个Web 程序开发和运行环

境，使用它只能开发Web 应用程序

知识

点:

阶段作业一

学生答案: [D;]

标准

答案:

D

得分: [10] 试题

分值:

10.0

9.冯·诺依曼计算机中指令和数据均以二进制形式存放在存储器中，CPU区分它们的依据是（）

A.指令操作码的译码结果

B.指令和数据的寻址方式

C.指令周期的不同阶段

D.指令和数据所在的存储单元

知识

点:

阶段作业一

学生答案: [C;]

标准

答案:

C

得分: [10] 试题

分值:

10.0

一、单项选择题（共10道小题，共100.0分）

1.下面关于“回调”的说法错误的是（）

A.“回调”是一种程序设计模式，而不是

Java的专门语法规则

B.通过回调，对象被赋予一些信息，这些

信息允许它在稍后的某个时刻返回头去调用初始对象

C.Java通过指针实现回调

D.Java通过接口实现回调

知识

点:

阶段作业二

学生答案: [C;]

标准

答案:

C

得分: [10] 试题

分值:

10.0

2.设有如下程序

public class Try2 {

public static void main(String[] args) { Circle c = new Circle(2);

System.out.println(c.getArea());

}

}

interface IShape {

double PI = 3.14;

double getArea();

}

class Circle implements IShape { private double radius;

Circle(double radius) {

this.radius = radius;

}

public double getArea() {

return (PI * radius * radius); }

}

则下面说法正确的是（）

A.编译时发生错误

B.运行时发生错误

C.输出为12.56

D.输出为0

知识

点:

阶段作业二

学生答案: [C;]

标准

答案:

C

得分: [10] 试题

分值:

10.0

3.设有如下程序

public class Try2 {

public static void main(String[] args) {

B objb = (B) new A();

objb.show();

}

}

class A {void show() {System.out.println("a");}}

class B extends A { void show() { System.out.println("b");}} 则下面说法正确的是（）

A.编译时发生错误

B.运行时发生错误

C.输出为a

D.输出为b

知识

点:

阶段作业二

学生答案: [B;]

标准

答案:

B

得分: [10] 试题

分值:

10.0

4.有如下代码段

class COuter {

int x = 10;

void showA() {

System.out.println(x);

}

void print() {

(new CInner()).showB();

}

class CInner {

int x = 20;

void showB() {

System.out.println(x);

}

}

}

public class Try2 {

public static void main(String[] args) { COuter o = new COuter();

o.print();

}

}

则下面说法正确的是（）

A.编译时发生错误

B.运行时发生错误

C.输出为20

D.输出为10

知识

点:

阶段作业二

学生答案: [C;]

标准

答案:

C

得分: [10] 试题

分值:

10.0

5.设有如下程序段

class Test{

private int m;

public static void fun(){

//some code…

}

}

要使成员变量m 被函数fun()直接访问，则下面选项正确的是（）

A.将private int m改成protected int m

B.将private int m改成public int m

C.将private int m改成static int m

D.将private int m改成int m

知识

点:

阶段作业二

学生答案: [C;]

标准

答案:

C

得分: [10] 试题

分值:

10.0

6.(错误)

设有如下声明

String s = "story";

则下面语句哪个是合法的？（A）

A.s += "books";

B.char c = s[1];

C.int len = s.length;

D.String t = s.subString(1,4);

知识

点:

阶段作业二

学生答案: [D;]

标准

答案:

A

得分: [0] 试题

分值:

10.0

7.Java 提供了很多系统程序包，编译程序时会自动导入到源程序中的系统包是（）

A.java.appplet

B.java.io

https://www.sodocs.net/doc/019559639.html,ng

D.java.security

知识

点:

阶段作业二

学生答案: [C;]

标准

答案:

C

得分: [10] 试题

分值:

10.0

8.下面关于Java程序的类的叙述错误的是（）

A.类是描述同种对象具有的结构和功能的

程序模块

B.Java 用类来定义对象能够持有的数据

和方法的执行效果

C.类就是对象，对象就是类

D.类是一种数据类型

知识

点:

阶段作业二

学生答案: [C;]

标准

答案:

C

得分: [10] 试题

分值:

10.0

9.(错误)

设有如下接口定义

interface IShape {

double Pi = 3.14;

void getArea();

}

则下面说法错误的是（）

A.在程序的任何一个地方都可以调用

getArea(C)

B.getArea()是抽象方法

C.getArea()是静态方法

D.getArea()不带有返回值

知识阶段作业二

点:

学生答案: [D;]

标准

答案:

C

得分: [0] 试题

分值:

10.0

10.设有如下程序

public class Try2 {

public static void main(String[] args) {

A obja = new B();

obja.show();

}

}

class A {void show() {System.out.println("a");}}

class B extends A { void show() { System.out.println("b");}} 则下面说法正确的是（）

A.编译时发生错误

B.运行时发生错误

C.输出为a

D.输出为b

知识

点:

阶段作业二

学生答案: [D;]

标准

答案:

D

得分: [10] 试题

分值:

10.0

一、单项选择题（共10道小题，共100.0分）

1.(错误)

设有如下程序

public class Try2 {

public static void main(String[] args) { Circle c = new Circle(2);

System.out.println(c.getArea());

}

}

interface IShape {

double PI = 3.14;

double getArea();

}

class Circle implements IShape {

private double radius;

Circle(double radius) {

this.radius = radius;

}

double getArea() {

return (PI * radius * radius);

}

}

则下面说法正确的是（ A ）

A.编译时发生错误

B.运行时发生错误

C.输出为12.56

D.输出为0

知识

点:

阶段作业二

学生

答案:

[C;]

得分: [0] 试题

分值:

10.0

2.下面哪个不能直接导致一个线程停止执行？（）

A.调用 yield() 方法

B.在一个对象上调用 wait() 方法

C.在一个对象上调用 notify () 方法

D.在一个对象上调用 Interrupt() 方法

知识

点:

阶段作业三

学生

答案:

[C;]

得分: [10] 试题

分值:

10.0

3.(错误)

请看下面未完成的代码

public class Foo implements Runnable {

public void run (Thread t) {

System.out.println("Running.");

}

public static void main (String[] args) {

new Thread(new Foo()).start();

}

}

结果是？（C）

A.运行时抛出一个异常

B.程序能够运行，但是没有任何输出

C.没有实现 Runnable 接口中的方法导致编译错误

D.程序运行后输出“Running”

知识

点:

阶段作业三

学生

答案:

[D;]

得分: [0] 试题

分值:

10.0

4.下面能够得到文件“file.txt”的父路径的是（）

A.String name= File.getParentName(“file.txt”);

B.String name= (new File(“file.txt”)).getParent();

C.String name = (new File(“file.txt”)).getParentName();

D.String name= (new File(“file.txt”)).getParentFile();

知识

点:

阶段作业三

学生

答案:

[B;]

得分: [10] 试题

分值:

10.0

5.下面哪个基于Unicode字符的输入流？（）

A.Reader

B.Writer

C.InputStream

D.OutputStream

知识

点:

阶段作业三

学生

答案:

[A;]

得分: [10] 试题

分值:

10.0

6.关于 Java 流的叙述错误的是（）

A.流是 Java 语言处理 I/O 的方式

B.从概念上讲，流就是一系列的字节序列或字符序列

C.引入流的概念的目的是使得在处理不同的数据输入输出时编程更

加方便

D.流是Java惟一的非面向对象的语言构成

知识

点:

阶段作业三

学生

答案:

[D;]

得分: [10] 试题

分值:

10.0

7.请看下面的代码

public void test( ) {

try { oneMethod( );

System .out .println(“condition 1”);

} catch (ArrayIndexOutOfBoundsException e) {

System .out .println(“condition 2”);

} catch (Exception e) {

System .out .println(“condition 3”);

} finally {

System .out .println(“condition 4”);

}

}

如果oneMethod抛出NullPointerException，则程序输出结果为是（）

A.condition 1

B.condition 2

C.condition 3

D.condition 3

condition 4

知识

点:

阶段作业三

学生

答案:

[D;]

得分: [10] 试题

分值:

10.0

8.设有如下程序

public class Try2 {

public static void main(String[] args) { Try2 obj = new Try2();

obj.test();

}

void oneMethod() {

int a [] = {1, 2, 3};

System.out.println(a[0]);

}

public void test() {

try {

oneMethod( );

System.out.println("condition 1");

}

catch (ArrayIndexOutOfBoundsException e) { System.out.println("condition 2");

}

catch (Exception e) {

System.out.println("condition 3");

}

finally {

System.out.println("finally");

}

}

}

则程序的输出结果的是（）

A.1

condition 1

finally

B.condition 2

finally

C.condition 3

finally

D.3

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16秋北邮大学英语3阶段作业

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?D、OK. 我的答案：C 此题得分：2.5分 5.（2.5分）– What can I do for you? --__________. ?A、Hello. ?B、I want to buy this book. ?C、Thank you. ?D、Nice to meet you. 我的答案：B 此题得分：2.5分 6.（2.5分） Iron expands when____ . ?A、heat ?B、hot ?C、heated ?D、is hot 我的答案：C 此题得分：2.5分 7.（2.5分）— What did you think of Bellow’s new book? — I enjoyed ________ it. ?A、to read ?B、reading ?C、to have read ?D、the reading of 我的答案：B 此题得分：2.5分 8.（2.5分）—May I help you with some shoes, sir? — Yes. I’ d lik e to try on those brown __________. ?A、one ?B、ones ?C、two ?D、pair

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北邮大学英语2阶段作业2

A . anyone else B . anything C . some of the things D . anything else A . more larger, all B . much larger, that C . very larger, both D . larger, those

A . flooded B . were flooded C . was flooded D . flood √4. A . being B . C . having D . having A . happened to see B . was happened to see C . happened to be seen D . was happened to be seen

A . rather B . enough C . quite a D . fairly A . the much best B . much the most best C . the very best D . very the best A . will put off

B . will be put off C . will be put D . has put off A . When B . What time C . How often D . How long A . take good care of B . has taken good care of C . took good care of D . are taken good care of

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