题型：单选题 题类：常考题 难易度：普通
浙江省金华市江南中学2020届高三下学期信息技术4月初测试卷
s = "2019appreciate": sum = 0
For i = 1 To Len(s)
ch = Mid(s, i, 1)
If ch >= "a" And ch <= "z" Then
m = Asc(ch) - Asc("a") + 1
a(m) = a(m) + 1
End If
Next i
For i = 1 To 10
If a(i) > 0 Then sum = sum + 1
Next i
数组a各元素的初始值都为0，执行该程序段后，变量sum的值为（ ）
试题篮
