请大家帮忙~一道一直没有想通的题

何小媛159753

The record of the past is always incomplete, and the historian who writes about it inevitably reflects the preoccupations of their own time.

(A) the historian who writes about it inevitably reflects

(B) the historian writing about it will inevitably reflect

(C) a historian writing about it inevitably reflects

(D) writing about it, it is inevitable for historians to reflect

(E) historians in writing about it inevitably reflect

答案是E，我不知道怎么其他几项都错在哪里了？

何小媛159753

还有一道 ，嘻嘻
In terms of physics, the characteristic feature of the roller coaster is that the cars' potential energy, gained through their being lifted by a chain drive through the Earth's gravity to the top of the first drop, has been converted to kinetic energy by the time the ride ends.  
(A) cars' potential energy, gained through their being lifted by a chain drive
(B) cars' potential energy, a gain achieved as they are lifted by a chain drive
(C) potential energy from the cars' being lifted by a chain drive
(D) potential energy of the cars, gained as a chain drive lifts them
(E) potential energy gained by the cars, being achieved while a chain drive lifts them

答案为D，B错在哪里了呢？

shakiraxin

主谓一致 句子中后面部分-----the preoccupations of their own time.中 their决定了主语要使用复数 这样就排除了a 和c；选项b中用了will  时态不对，题目说的是一个一般事实 要用一般式；d选项造成fragment，主语and连接的是两个主谓完整的句子。

何小媛159753

很详细呀，好人~

evelyn205205

还有一道 ，嘻嘻
In terms of physics, the characteristic feature of the roller coaster is that the cars' potential energy, gained through their being lifted by a chain drive through the Earth's gravity to the top of the first drop, has been converted to kinetic energy by the time the ride ends.  
(A) cars' potential energy, gained through their being lifted by a chain drive
(B) cars' potential energy, a gain achieved as they are lifted by a chain drive
(C) potential energy from the cars' being lifted by a chain drive
(D) potential energy of the cars, gained as a chain drive lifts them
(E) potential energy gained by the cars, being achieved while a chain drive lifts them

答案为D，B错在哪里了呢？

-- by 会员 何小媛159753 (2011/7/27 15:17:03)

GMAT语法中，多采用A of B结构，而不采取B' A结构。

yvonnestef

b的their让人误以为是energy，而实际应该指的是cars

ParkinFAN

A  错在哪呢》？？