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.


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.

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.

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.

The many spare teeth lying in seemingly limit less 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.

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.

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考题讲解

题目分析：
本题利用了状语从句或者状语就近修饰的原则来考查了考生理解句意的能力。

选项分析：

A选项：本选项的最开始是一个时间状语从句，其最近的一个句子many spare teeth lie in seemingly limitless reserve，由于状语从句的就近修饰原则，所以，an active tooth in the shark's jaws is lost or worn down和many spare teeth lie in seemingly limitless reserve这两句话形成“时间关系（when）”。但是，这在逻辑上是不正确的。“很多空闲的牙是以一个看起来无限制地储备的方式安放的”讲的是鲨鱼牙的一个特点，这个特点不会被“牙掉或者不掉”所影响，因此这两句话之间没有明确的逻辑关系。

B选项：本题中用whenever或者when是没有区别的。但是，和选项(A)相同，形成when关系的两个句子不正确。另外，选项的最后有一个非限制性定语从句，其就近修饰jaws，在逻辑上可以滑到合适的位置上的应该是“牙”而不是“下巴”。

C选项：本选项的时间状语when an active tooth is lost or worn down正确的修饰slide into the appropriate position。但是定语从句each one of which are ready to slide在字面上依然就近修饰名词jaws，该错误同(B)。

D选项：定语从句错误同(B)。另外，本选项没有谓语动词。

E选项：Correct. 本选项在语法和逻辑上均是正确的。

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