以下是表單的Activate事件的代碼: s=0 for n=10 to 0 step -2 s=s+n endfor this.text1.value=s 這段代碼執(zhí)行后,文本框Text1的值為()
A.30 B.10 C.0 D.-2
A.Activate B.AddObject C.Release D.Refresh
A.SetFocus B.GotFocus C.Activate D.Show