Private Sub Command1_C1ick ( )
Dim a(9) As Integer
a(9)=Val(Text1.text)
For i=8 to 1 step -2
a(i)=a(i+1)/2
Next i
Text2.text=str(a(i))
End Sub
“人体有200多种细胞,其基本结构都很相似”,这是指这些细胞都具有除下列哪项之外的结构?( )