长5米，宽比长少3米得长方形周长是请选择CBA)S;q.P'{/Z8I2g'^8I'n)x1]6j)~9}1e,Y;B5l/s;B'N7x
A．8米'n)x1]6j)~9}1e,Y;B5l/s;B'N7x
B．14米'n)x1]6j)~9}1e,Y;B5l/s;B'N7x
C．7米'n)x1]6j)~9}1e,Y;B5l/s;B'N7x