若在文本框Text1、Text2，Text3中分别输入2，5，6，下列程序段运行后，标签Labe12中显示的内容是
Private Sub Command1_Click()
Dim a As Integer，b As Integer，c As Integer
A=Val(Text1.Text)：b=Val(Text2.Text):c＝Val(Text3.Text)
Label2.Caption=Str(fx(a,b,c))
End Sub
Function fx(x As Integer,y As Integer,z As Integer)As Integer
If x<y Then fx=z
Ifx>y Then fx=y Else fx=x
End Function

A．2

B．5

C．6

D．0

执行下面的Visual Basic程序段后，变量a，b的值是( )

A．a=5，b=6	B．a=6，b=5
C．a=1，b=11	D．a=11，b=1

某对分查找算法的VB程序段如下：
i=1:j=6:n=0:f=False
key=Val(Text1.Text)
Do While i<=j and Not f
n=n+1
m=Fix((i+j)/2)
If key=a(m)then f=True
If key<a(m)then j=m-1 Else i=m+1
Loop
数组元素a(1)到a(6)的值依次为“12，19，27，31，46，55”，文本框Text 1中输入“31”后运行该程序，则以上程序段运行结束后，下列说法不正确的是（   ）

A．变量i的值为4

B．变量j的值为4

C．变量m的值为4

D．变量n的值为3

以下流程图中输出a的值有可能是2的是（ ）。

A．	B．
C．	D．

编写“十六进制加法”程序。程序运行时，在文本框Text1和文本框Text2分别输入两个十六进制数，单击“计算”按钮后在文本框Text3上输出两个十六进制相加后的结果。程序运行如图所示。

（1）观察代码，触发代码执行的事件名是________________________
（2）实现上述功能的VB程序如下，请在划线处填人合适的代码。
Private Sub Cmd1_Click()
Dim a1 As String, a2 As String, sum As String, t As String
Dim b1 As Integer, b2 As Integer
Dim dist As Integer, x As Integer, jw As Integer
a1 = Text1.Text: a2 = Text2.Text: sum = ""
dist = Len(a1) - Len(a2)
If dist < 0 Then
t = a1: a1 = a2: a2 = t
___________________
End If
For i = 1 To dist
a2 = "0" + a2
Next i
jw = 0
For i = __________________________ 
If Mid(a1, i, 1) >= "A" And Mid(a1, i, 1) <= "F" Then
b1 = Asc(a1) - 55
Else
b1 = Val(Mid(a1, i, 1))
End If
If Mid(a2, i, 1) >= "A" And Mid(a2, i, 1) <= "F" Then
b2 = Asc(a2) - 55
Else
b2 = Val(Mid(a2, i, 1))
End If
x = b1 + b2 + jw
jw = x \ 16
If __________________ Then
sum = Chr(x Mod 16 + 55) + sum
Else
sum = Str(x Mod 16) + sum
End If
Next i
If jw = 1 Then sum = "1" + sum
Text3.Text = sum
End Sub
（3）若将代码中加框处代码删除，则图中Text3中显示的结果为_________。