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【简答题】
在窗体上画一个命令按钮和一个文本框，然后编写命令按钮的Click事件过程。程序运行后，在文本框中输入一串英文字母(不区分大小写)，单击命令按钮，程序可找出未在文本框中输入的其他所有英文字母，并以大写方式降序显示到Text1中。例如，若在Text1中输入的是abDfdb，则单击Command1按钮后Text1中显示的字符串是ZYXWVUTSRQPONMLKJIHGEC。请填空。
Private Sub Command1_Click()
Dim str As String,s As String,c As String
str=UCase(Text1)
s=" "
c="Z"
While c＞="A"
If Instr(str，c)=0 Then
s= 1
End If
c=Chr $ (Asc(c) 2 )
Wend
If s＜＞""Then
Text1=s
End If
End Sub 下面的程序用“冒泡”法将数组a中的10个整数按升序排列，请将程序补充完整。 Option Base 1 Private Sub Command1_Click() Dim a a=Array(678，45，324，528，439，387，87，875，273，823) For i= For j= If a(i) a(j)Then a1=a(i) a(i)=a(j) a(j)=a1 End If Next j Next i For i=1 To 10 Print a(i) Next i End Sub
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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】有如下事件过程：Private Sub Form_Load() Show Dim Arr() As Variant Arr = Array(1, 3, 5, 7, 9, 11, 13, 15) Call converse(Arr) For i = 0 To 7 Print arr(i); Next iEnd Sub 以上程序的功能是，通过调用Converse过程，将数组Arr中的元素逆序存放并输出...
A.
Private Sub converse(dim a() as Variant ) Dim T For i = LBound(A) To UBound(A) T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
B.
Private Sub converse(dim a() as Variant) Dim T Dim J As Integer J = (LBound(A) + UBound(A)) / 2 For i = LBound(A) To J T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
C.
Private Sub converse(a() As Variant) Dim T For i = LBound(A) To UBound(A) T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
D.
Private Sub converse(a() As Variant) Dim T Dim J As Integer J = Int((LBound(A) + UBound(A)) / 2) For i = LBound(A) To J T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
【单选题】标志着清政府被迫放弃闭关政策，开始面向世界，基本上完成了从传统的理藩向近代外交转化的事件是1861年( )。
A.
辛酉政变
B.
总理各国事务衙门的设立
C.
洋务运动的兴起
D.
外务部的成立