單項(xiàng)選擇題一根木料用去全長(zhǎng)的40%,還剩5.4米,這根木料原來(lái)的長(zhǎng)是多少米?列式是()

A.5.4÷40%
B.5.4÷(1-40%)
C.5.4×40%
D.5.4÷(1+40%)