周长增加：4×2=8（厘米）．
答：周长增加8厘米．
故选：B．
The process of software development doesn’t include ______.
A．verification function
B．writing code
C．management function
D．validation function
1，1/16，( )，1/256，1/625
A．1/27
B．1/81
C．1/100
D．1/121
