题目

有如下VB程序段： Private Sub Command1_Click()     Dim n As Integer， ans As Integer     n = 5     Dim x(1 To 5) As Integer     x(1) = -30: x(2) = 26: x(3) = -18: x(4) = 60: x(5) = 22     ans = 60     For i = 1 To n         If x(i) < 0 Then x(i) = -x(i)         ans = ans + gcd(ans， x(i))     Next i     Text1.Text = Str(ans) End Sub Function gcd(a As Integer， b As Integer)     If b = 0 Then         gcd = a     Else         gcd = gcd(b， a Mod b)     End If End Function 执行该程序段后，Text1. Text中显示的值为（      ） A . 1 B . 2 C . 90 D . 98 答案：D

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