Starfish, with anywhere from five to eight arms, have a strong regenerative ability, and if one arm is lost it quickly replaces it, sometimes by the animal overcompensating and growing an extra one or two.
(A)one arm is lost it quickly replaces it, sometimes by the animal overcompensating and
(B)one arm is lost it is quickly replaced, with the animal sometimes overcompensating and
(C)they lose one arm they quickly replace it, sometimes by the animal overcompensating,
(D)they lose one arm they are quickly replaced, with the animal sometimes overcompensating,
(E)they lose one arm it is quickly replaced, sometimes with the animal overcompensating,
题目分析：划线前面一个and使前后有一个并列关系，后面又有一个and使overcompensating和growing进行并列，只有B符合这两个and的并列，很简单！
