单选题 .............................................................................................................................................. 1

填空题 .............................................................................................................................................. 5

指错题 .............................................................................................................................................. 7

概述部分........................................................................................................................................... 8

基础语法........................................................................................................................................... 9

面向对象......................................................................................................................................... 11

字符串与正则表达式 ..................................................................................................................... 14

错误与异常..................................................................................................................................... 15

集合 ................................................................................................................................................ 15

内存管理与指针 ............................................................................................................................. 16

反射 ................................................................................................................................................ 16

线程 ................................................................................................................................................ 17

文件 ................................................................................................................................................ 18

本地化 ............................................................................................................................................ 18

单选题

一、运行下面程序

using System;

namespace test

{

abstract class BaseClass

{

public virtual void MethodA()

{

Console.WriteLine("BaseClass");

}

public virtual void MethodB()

{

}

}

class Class1 : BaseClass

{

public void MethodA()

{

Console.WriteLine("Class1");

}

public override void MethodB()

{

}