OG的一道SC。。求助求助啊~

小c考托福

Starfish, with anywherefrom five to eight arms, have
a strong regenerative ability, and if one arm is lost it
ouicklv replaces it. sometimes bv 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 bythe 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,


答案选B  求助啊~ 求详解。。

beihorse

C吗？都不太好，就C感觉读上去还顺点。

beihorse

应该是B，因为后面的结构

guantie3

In C and E, sometimes by the animal and sometimes with the animal imply a nonsensical meaning: that the lost arm is replaced sometimes NOT BY or sometimes WITHOUT the animal.
Eliminate C and E.

The correct answer is B.

Where a modifier is placed affects MEANING.
Always notice when a modifier such as SOMETIMES changes position in the answer choices.
In the OA, sometimes correctly modifies overcompensating and growing:
If one arm is lost it is quickly replaced, with the animal SOMETIMES OVERCOMPENSATING AND GROWING an extra one or two.