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yunhaoll

1 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. E A？？？

 

1. 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.

2. 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.

3. 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.

4. 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.

5. 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.

   Answer:

 问题：D和E错在哪里

 

2

NASA’s methodical approach to the exploration of Mars has not yet answered the questions of whether biological life forms ever emerged on Mars and whether, presuming such life forms having left fossil traces to begin with, those traces can still exist in some moist recesses of the cold and arid planet.
                         A

1. and whether, presuming such life forms having left fossil traces to begin with, those traces can

2. and whether, if it is presumed that such life forms left some fossil traces to begin with, can those traces

3. and whether, presuming such life forms left fossil traces to begin with, those traces

4. and, presuming such life forms did leave some fossil traces to begin with, if they can

5. and, presuming such life forms to have left fossil traces to begin with, if they

问题：C怎么错了
                    定于从句，可以是定于从句呀

 

 

3

Unlike the body’s inflammatory response to cuts and sprains, with widespread swelling and stiffness immobilizing the injured area until it heals, the body’s response to sunburn is more localized and resulting in a distinct line dividing affected and unaffected areas of the skin.
                          D

 

1. with widespread swelling and stiffness immobilizing the injured area until it heals, the body’s response to sunburn is more localized and resulting

2. where the injured area is immobilized with widespread swelling and stiffness until it has healed, sunburn generates a more localized response in the body, which results instead

3. with the injured area immobilized by means of widespread swelling and stiffness until healing, sunburn generates a more localized response in the body, one resulting

4. in which widespread swelling and stiffness immobilize the injured area until it has healed, the body’s more localized response to sunburn results

5. in which widespread swelling and stiffness immobilize the injured area until healing, instead, the body’s more localized response to sunburn results

问题：A怎么错了

 

 

 

mych666666

1.选E，而不是A， A选项是When开头， 一般情况下错，在本句中，不是当牙齿松动的时候，备用的牙齿才lie in...,而是本身备用的牙齿就一直是这样lie in...的，明显从逻辑上讲不通。再一点，each of which are ，这里的are和 each of...主谓不一致。

D选项中的Each of  which, which 指代的是teeth,还是jaws呢? 指代不清吧。而且最大的错误是整个句子根本就没有谓语。The many spare teeth（主语） lying（分词短语修饰主语） 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.这里是个同位语从句，修饰谁不明确）

2.C中一个比较明显的错误是省略了情态动词Can，这样就改变了句子的意思。而A中无明显错误。

3. A中is more localized and resulting，最后的result应该与is平行，用results.