求教prep语法68题

68.   

For the best extraction of the flavor of saffron threads, it should be soaked in liquid after being pounded with a mortar and pestle.

(A) For the best extraction of the flavor of saffron threads, it should be soaked in liquid after being pounded

(B) To best extract their flavor, saffron threads should be soaked in liquid after pounding

(C) The best way to extract the flavor from saffron threads is soaking them in liquid after being pounded

(D) The best way to extract the flavor from saffron threads is to soak them in liquid after pounding them

(E) The flavor of saffron threads can best be extracted by soaking it in liquid after pounding it

这题选D没有疑问，只是觉得PREP上的解释好奇怪，什么 “sth is sth是一种平行结构,其中sth和sth一定要能够对应,平行”，还举了个例子

 One legacy of Madison Avenue's recent campaign to appeal to people fifty years old and over is the realization that as a person ages. their concerns change as well.

 One legacy of Madison Avenue's recent campaign to appeal to people fifty years old and over is the realization that as a person ages. their concerns change as well.

(A) the realization that as a person ages, their

(A) the realization that as a person ages, their

(B) the realization that as people age, their

(B) the realization that as people age, their

(C) to realize that when a person ages, his or her

(C) to realize that when a person ages, his or her

(D) to realize that when people age, their 

(D) to realize that when people age, their 

(E) realizing that as people age, their

(E) realizing that as people age, their

其中 C,D,E 选项均不满足 sth is sth 的平行对应. one legacy 是名词,因此和它对应的也应该是名词,C,D,E 分别是 to do 结构和动名词结构,不能和名词结构平行,因此排除 C,D,E 选项,然后根据指代一致,排除 A,正确答案为 B

感觉这个例子和这道题目没有什么可比性，原题只是不定式作表语罢了，不是什么sth is sth的对称，和这个例子貌似没什么可比性，哪位NN能不能解释一下，谢谢！！！

其中 C,D,E 选项均不满足 sth is sth 的平行对应. one legacy 是名词,因此和它对应的也应该是名词,C,D,E 分别是 to do 结构和动名词结构,不能和名词结构平行,因此排除 C,D,E 选项,然后根据指代一致,排除 A,正确答案为 B

感觉这个例子和这道题目没有什么可比性，原题只是不定式作表语罢了，不是什么sth is sth的对称，和这个例子貌似没什么可比性，哪位NN能不能解释一下，谢谢！！！