GWD疑问，请多多指教

hanlei84921

When an active tooth in the shark’s jaws is lost or worn down, many spare teeth lie in seemingly limitless reserve, each of which are ready to slide into the appropriate position.

A.When an active tooth in the shark’s jaws is lost or worn down, many spare teeth lie in seemingly limitless reserve, each of which are ready to slide into the appropriate position.
B.Whenever an active tooth is lost or worn down, many spare teeth lie in seemingly limitless reserve in the shark’s jaws, which are each ready to slide into the appropriate position.
C.Many spare teeth lie in seemingly limitless reserve in the shark’s jaws, each one of which are ready to slide into the appropriate position when an active tooth is lost or worn down.
D.The many spare teeth lying in seemingly limitless reserve in the shark’s jaws, each one of which is ready to slide into the appropriate position whenever an active tooth is lost or worn down.
E.In the shark’s jaws, many spare teeth lie in seemingly limitless reserve, each one ready to slide into the appropriate position whenever an active tooth is lost or worn down.
本人选择的是C，答案是A，
想请教为何选择A更加合适呢？谢谢啦~

linmeimei

应该选E。A和C的each of which are 就已经错了。

hanlei84921

EXCUSE ME, BUT THE ANSWER IS A AND THE PROBLEM WITH E IS THAT THE CHOICE USES THE WORD "WHENEVER"——是一个强烈语气表达，WHICH CANNOT BE ADDED OR DELETED. THERE IS NO WHENEVER IN THE ORIGINAL SENTENCE, SO THERE SHOULDN'T BE WHENEVER IN THE CHOICE.

hazardous

我觉得主要的差别在于，A一开始就明摆着交代了逻辑关系，一....就....；而C讲了长长的两句话，最后才告诉你它们的关系，实在不如A那么清爽。

hanlei84921

C其实也对，事实没有A简洁，因此根据简洁的原则选择A，是吧？
好，我懂了，thx

linmeimei

trust me, the answer is E. and "whenever" doesn't have any sense of emphasis here. And I doubt your saying that "emphatic or emotional words" couldn't be added or deleted. According to my experience, you can even change the whole meaning if the original sentence is nonsense.
so, you two points should be reconsidered.
plus, this question is from PREP 08, you can check it.

hanlei84921

OK. I KNOW WHAT YOU MEAN. THE GRAMMATIC STRUCTURES IN THE LATTER HALF OF A AND C ARE COMPLETELY WRONG, OUTWEIGHING OTHER PROBLEMS.
THANK YOU VERY MUCH FOR YOUR HELP!!!