参考答案:B 17. 在同一个文件夹中,不能用鼠标对同一个文件进行复制。( ) 在同一个文件夹中,不能用鼠标对同一个文件进行复制。( ) 错误 18. 设有如下程序 Private Sub Fom1_Click( ) Dim s As Integer,b As Intege 设有如下程序 Private Sub Fom1_Click( ) Dim s As Integer,b As Integer a=20:b=50 p1 a,b p2 a,b p3 a,b Print"a=";a,"b=";b End Sub Sub pl(x As Integer,ByValy As Integer) x=x+10 y=y+20 End Sub Sub p2(ByVal x As Integer,y As Integer) x=x+10 y=y+20 End Sub Sub p3(ByVal x As Integer,ByValy As Integer) x=x+10