A:乙图可表示人的成熟红细胞
B:洋葱鳞片叶表皮细胞特有的结构是①⑥⑦
C:光合作用的场所是③
D:控制物质进出细胞的结构是⑤
Dim a As Integer, b As Integer, c As Integer, y As Integer
a=3:b=4:c=4
If a<=b And c<=a Then
y=a+b
ElseIf a<=b or b<=c Then
y=b+c
ElseIf b=c Then
y=a mod c
Else
y=a+b+c
End If
该程序段运行之后,变量y的值为( )
我国降水时空分布特点是( )
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