(34)在窗体上从左到右有Text1、Text2两个文本框（见图），要求程序运行时，在Text1中输入1个分数后按回车键，则判断分数的合法性，若分数为0~100中的1个数，周围光标移到Text2中；否则光标不动，并弹出对话框显示“分数错”，下面程序中正确的是(D)
A)Private Sub Text1__KeyPress(KeyAscii AS Integer)
If KeyAscii=13 Then ‘回车符的ACSII码是13
a=Val(Text1)
If a>=0 or a<=100 Then
Text2.SetFocus
Else
Text1. SetFocus ; MsgBox(“分数错”)
End If
End If
End Sub
B) Private Sub Text1__KeyPress(KeyAscii AS Integer)
If KeyAscii=13 Then ‘回车符的ACSII码是13
a=Val(Text1)
If a>=0 And a<=100 Then
Text1.SetFocus
Else
Text2. SetFocus ; MsgBox(“分数错”)
End If
End If
End Sub
C) Private Sub Text1__KeyPress(KeyAscii AS Integer)
If KeyAscii=13 Then ‘回车符的ACSII码是13
a=Val(Text1)
If a<0 And a>100 Then
Text2.SetFocus
Else
Text1. SetFocus ; MsgBox(“分数错”)
End If
End If
End Sub
D) Private Sub Text1__KeyPress(KeyAscii AS Integer)
If KeyAscii=13 Then ‘回车符的ACSII码是13
a=Val(Text1)
If a>=0 And a<=100 Then
Text2.SetFocus
Else
Text1. SetFocus ; MsgBox(“分数错”)
End If
End If
End Sub
(35)在窗体上画2个命令按钮，名称分别为Command1、command2，并编写如下程序
Const n=5,m=4
Dim a(m,n)
Private Sub Command1_Click()
K=1
For i=1 To m
For j=1 To n
a(i,j)=k
k=k+1
Next j
Next i
Private Sub Command2_Click()
Summ=0
For i=1 To m
For j=1 To n
If i=1 Or i=m Then
Summ=summ+a(i,j)
Else
If j=I Or j=n Then
Summ=summ+a(i,j)
End If
End If
Next j
Next i
Print summ
End Sub <
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