旧版PREP-Q45,58,62,71

45. Hydrocarbons, with which fruit flies perfume themselves in species-specific blends, are known to be important in courtship, and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of others.

A. and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of

B. and apparently this assists flies when they taste the hydrocarbons on prospective mates in distinguishing their own species from those of

C. which apparently assists flies that tastes the hydrocarbons on prospective mates in being able to distinguish their own species from

D. apparently assisting flies to taste the hydrocarbons on prospective mates to distinguish their own species from those of

E. apparently assisting flies that taste the hydrocarbons on prospective mates in distinguishing their own species from

请教各位大牛们,这里的c选除了解答所说的C: which无指代外,是否有犯了修饰歧义的错误,因which 变成在修饰前面的courtship而非句子的主语Hydrocarbon,造成扭曲句意,不好意思,我只想确认我的想法是否正确???

58. Diesel engines burn as much as 30% less fuel than gasoline engines of comparable size, as well as emitting far less carbon dioxide gas and far fewer of the other gasses that have been implicated in global warming.

A  of comparable size , as well as emitting far less carbon dioxide gas and far fewer of the other gasses that have

B of comparable size, as well as emit far less carbon dioxide gas and far fewer of the other gasses having

C of comparable size, and also they emit far fewer carbon dioxide and other gasses that have

D that have a comparable size, and also they emit far fewer of the other gasses having

E that have a comparable size, as well as emitting far fewer of the other gasses having

请教各位大大们,B选的解答:having been implicated，分词的完成时态不能说定语,这句话是什么意思????????

还有D选的解答: having… 啰嗦??????我是觉得与正确选项相比other gasses that have比having更准确修饰other gasses, 而having有点模糊,不知道我的看法是否正确,请大牛们指正!

62. Because she knew many of the leaders of colonial America and the American Revolution personally, Mercy Otis Warren was continually at or near the center of political events from 1765 to 1789, a vantage point combining with her talent for writing to make her one of the most valuable historians of the ear

(a) a vantage point combining with her talent for writing to make

(b) a vantage point, when combined with her talent for writing, that made

(c) a vantage point that combined with her talent for writing, and it made

(d) and this vantage point, which combined with her talent for writing to make

(e) and this vantage point, combined with her talent for writing, made

 请教各位大大们,D选的解答: and后面句子不完整,不了解是什么意思??请各位大牛们明示??

 请教各位大大们,D选的解答: and后面句子不完整,不了解是什么意思??请各位大牛们明示??

 71. Simply because they are genetically engineered does not make it any more likely for plants to become an invasive according to a decade-long study published in the journal Nature.

A. because they are genetically engineered does not make it any more likely for plants to

B. because it is genetically engineered does not make a plant any more likely to

C. being genetically engineered does not make it any more likely that plants will

D. being genetically engineered does not make a plant any more likely to

E. being genetically engineered does not make a plant any more likely that it will become

 不好意思~.~

 不好意思~.~

E选的解答: make 少了it做形式宾语这句话是什么意思????????????????

还有解答中注意那边:错误的是being done做后置定语,是表示being done不可放在后面的意思吗??

俺的看法

62：and this vantage point, which combined with her talent for writing to make

有一个连词which，但只有一个谓语 combined，差一个谓语。

我的理解：

58中D是说分词的完成时态不能做定语，做定语的应该是分词本身

E选项之中的having是可以省略的，你可以参照省略原则找到答案。

62中and引导的是句子，所以至少要是主谓结构，所以这个选项是不完整的。

71中句子是没有主语的，所以用it代替，在make后面的it代表了主语的含义做的是make的形式宾语