题目内容

设窗体上有一个标签Label 1和一个计时器Timer1，Timer1的Interval属性被设置为1000， Enabled属性被设置为True。要求程序运行时每秒在标签中显示一次系统当前时间。下列可以实现上述要求的事件过程是( )。

A. Private Sub Timer1_Timer() LabelCaption=True End Sub
B. Private Sub Timer1_Timer() LabelCaption=Time$ End Sub
C. Private Sub Timer1_Timer() LabelInterval=1 End Sub
D. Private Sub Timer1_Timer() For k=1 To TimerInterval Label1.Caption=Timer Next K End Sub

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