①细胞壁 ②细胞质 ③细胞膜 ④成型的细胞核 ⑤叶绿体
A:①②
B:②③
C:③④
D:④⑤
____长时间对电磁铁通电。(填“要和不要”)
Private Sub Command1_Click( )
Dim s As Integer
Dim I As Integer
S=0
For i=1 To 10
s=s+i\7
Next i
Text1.text=str(s)
End sub
该程序段运行后,文本框Text1中显示____