class Test

{

public Test()

{

Console.Write ("构造方法一被调用了");

}

public Test(int x)

: this()

{

Console.Write ("构造方法二被调用了");

}

public Test(bool b)

: this(1)

{

Console.Write ("构造方法三被调用了");

}

public static void Main(string[] args)

{

Test test = new Test(true);

}

}

上面程序的运行结果为下列哪一项？

Class Employee;

Class Manager ：Employee;

Class Director ：Employee;

则以下语句能通过编译的有哪些?

Using System;

Public class AAA{}

Public class BBB:AAA{}

Public class Test

{

Public static void Main()

{

AAA myA= new AAA();

BBB myB = new BBB();

AAA myC = myB;

Console.WriteLine(myC.GetType());

}

}

Class Shape { }; //Shape形状类

Class Circle : Shape { }; //Circle圆形类

Class Rectangle : Shape { }; //Rectangle长方形类

Public interface Animal {

Void Move();

}

则下列抽象类的定义中，哪些是不合法的?（ ）

Namespace HpApp {

class HpGame {

string name="王者荣耀";

public string type="MOBA类手游";

}

public class TestGame {

static viod Main() {

HpGame ga= new HpGame(); //代码1

Console.WriteLine(ga.type); //代码2

Console.WriteLine(ga.name); //代码3

}

}

}

Using System;

Class Exam {

Public static void main() {

int a=6, b=10;

if(b-3 > a)

{

A++;

}

Else

{

B--;

}

Console.WriteLine(“a = {0}, b = {1}”,

A, b);

}

}

Public void Go(){Console.WriteLine("Let\'s Go!!!");}

使用了以下语句创建该类的对象，并使变量obj引用该对象：

XClass obj = new XClass();

可访问类ZClass的Go方法是（ ）

Public static event MouseClickedListener MouseClicked;

执行下列语句:

MouseClicked += new MouseClickedListener(obj.DoSomething);

MouseClicked += new MouseClickedListener(obj.DoSomething);

MouseClicked += new MouseClickedListener(obj.DoSomething);

然后引发该MouseClicked事件，其结果为：（ ）