急求助。。这个很重要！！！

Spencer125

In assessing the problems faced by rural migrant workers, the question of whether they are better off materially than the urban working poor is irrelevant.
(A) In assessing the problems faced by rural migrant workers, the question of whether they are better off materially than the urban working poor is irrelevant.
(B) The question of whether the rural migrant worker is better off materially than the urban working poor is irrelevant in assessing the problems that they face.
(C) A question that is irrelevant in assessing the problems that rural migrant workers face is whether they are better off materially than the urban working poor.
(D) In an assessment of the problems faced by rural migrant workers, the question of whether they are better off materially than the urban working poor is irrelevant.
(E) The question of whether the rural migrant worker is better off materially than the urban working poor is irrelevant in an assessment of the problems that they face.
本题答案是D。我们说只要开始不是动作，就不存在动作发出者问题。所以in an assessment of ...  和 后面the question of 不冲突。

但prep07上。
（The application of a new method for analyzing the chemistry of tooth enamel allows scientists to
examine molars of prehuman ancestors and determining） that their diets were more varied than had
been supposed.

(A) The application of a new method for analyzing the chemistry of tooth enamel allows scientists to
examine molars of prehuman ancestors and determining
(B) Through the application of a new method for analyzing the chemistry of tooth enamel, the
molars of prehuman ancestors were examined by scientists who determined
(C) When they applied a new method for analyzing the chemistry of tooth enamel, scientists
examined molars of prehuman ancestors, determining
(D) Applying a new method for analyzing the chemistry of tooth enamel, the molars of prehuman
ancestors have been examined by scientists, who determined
(E) Applying a new method for analyzing the chemistry of tooth enamel, scientists have examined
molars of prehuman ancestors and determined
本题选E。  答案说B中开始through the application of ..  和 后面的the molars 冲突了。 但application不是名词了。我们不是说名字不用管主句的逻辑主语吗？   本题和第一题有矛盾。  
还有E中时态是不是有问题。我们说and连接的两个句子时态最好一样。  E中and 前用完成时  and后用过去时，这样也有问题呀？？？？
  还有请问本题B选项到底错在了那里？？？？

Spencer125

uppppppppppppppppppppppppp

摇曳的叶子

1
Through the application of a new method for analyzing the chemistry of tooth enamel, the molars of prehuman ancestors were examined by scientists who determined that their diets were more varied than had been supposed.
不是很清楚through的用法是否正确，但是B还有其他flaw可以提供排除的依据。
their指代scientists

2
(E) Applying a new method for analyzing the chemistry of tooth enamel, scientists have examined
molars of prehuman ancestors and determined

Spencer125

摇曳的叶子 发表于 2013-9-3 17:50
1
Through the application of a new method for analyzing the chemistry of tooth enamel, the molars of ...

对于第一题：
prep07上面说道 B中molars 不是through 的逻辑主语。

对于第二题.  E 中   一个是完成时代，一个是过去时态 是有问题的呀？  完成时态可以和现在时态连用。不能和过去时态连用。  除非E中determined 前面省略了have      你是怎么看这一问题的？

摇曳的叶子

Spencer125 发表于 2013-9-3 17:53
prep07上面说道 B中molars 不是through 的逻辑主语。
2.  中   一个是完成时代，一个是过去时态 是有问题 ...

I have eaten a peach and drunk a bottle of water.
没必要说I have eaten a peach, have..., have..., and have....

Spencer125

摇曳的叶子 发表于 2013-9-3 17:57
I have eaten a peach and drunk a bottle of water.
没必要说I have eaten a peach, have..., have...,  ...

非也。 请看
77.Scientists have found signs that moving water changed the chemical makeup of the surface of Mars
in recent eras, therefore concluding that its crust is harboring up to three times as much water than
was previously thought.

(A) eras, therefore concluding that its crust is harboring up to three times as much water than was
(B) eras, therefore concluding that the planet's crust harbors up to three times as much water or
more as was
(C) eras and have therefore concluded that the planet's crust harbors up to three times as much
water as
(D) eras and they have concluded, therefore, that its crust harbors up to three times as much water,
or more, than
(E) eras and concluded, therefore, that the planet's crust is harboring up to three times more water
as was
(C)  正确，Scientists have found…and have therefore concluded结构平行

77题：句子结构: Scientists have found…and have therefore concluded that…   这不和上面所说矛盾了吗？

摇曳的叶子

平行是可以省略的，但是加上也是正确的
Scientists have found...，and they have concluded....
Scientists have found...and have concluded...
Scientists have found...and concluded...

Spencer125

摇曳的叶子 发表于 2013-9-3 17:50
1
Through the application of a new method for analyzing the chemistry of tooth enamel, the molars of ...

你分析their指代scientists的依据是就近指代，但their是未划线部分，不能认为是错的。

Spencer125

摇曳的叶子 发表于 2013-9-3 17:50
1
Through the application of a new method for analyzing the chemistry of tooth enamel, the molars of ...

这道题B选项还有什么方法可以证明是错的？？？

摇曳的叶子

Spencer125 发表于 2013-9-3 18:05
你分析their指代scientists的依据是就近指代，但their是未划线部分，不能认为是错的。 ...

.........