[单项选择题] 有如下程序:Private Sub Command1_Click( )a$="A WORKER IS OVER THERE" x=Len(a $) For i
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[单项选择题] 有如下程序:Private Sub Command1_Click( )a$="A WORKER IS OVER THERE" x=Len(a $) For i=1 To x-1b$=Mid $(a $,i,2) If b $="ER"Then s=s+1 Next i Pdnt sEnd Sub程序运行后的输出结果是
A.1
B.2
C.3
D.4
参考答案: