求助关于一道语法题的句子分析

Although aspirin irritates the stomach, it can be avoided if the aspirin tablet is given a coating that will not dissolve until the tablet reaches the intestine.

(A) Although aspirin irritates the stomach, it

(B) The irritation of the stomach caused by aspirin

(C) The fact that aspirin causes irritation of the stomach

(D) Aspirin causes stomach irritation, although it（B）

(E) Aspirin irritates the stomach, which

请问这里是n1 of  n2+过去分词组成的一个定语结构，按照逻辑意思，这里的过去分词是指代n1的，可是我总觉得过去分词之前没有逗号是修饰就近的啊。。假设，n1 of n2 that+谓语，那这个谓语的单复数跟哪个？谢谢

        The speculative fever of the Roaring Twenties infected rich and poor alike; vast quantities of people were dangerously overextended, credit was absurdly easy to obtain, and most brokerage houses required only ten percent cash for stocks bought on “margin.”(P2 F-2)

(A) rich and poor alike; vast quantities of people were dangerously overextended

(B) both rich and poor alike; large amounts of people dangerously overextended themselves

(C) rich and poor alike; great numbers of people were dangerously overextended

(D) both rich and poor alike; vast amounts of people dangerously overextended themselves（C）

(E) both rich and poor; great quantities of people were dangerously overextended

至于这题，请问这里的quantities of可以修饰可数名词，那么就近A C和E怎么区别？

第一个不是很明白你下面说的那些，但是他的主语是the irritation所以选Ｂ

第２个我觉得只能用both A and B~~~A and B alike我觉得怪怪的～要ＮＮ们解释一下比较好～

quantities of只可以修饰可数名词呀～

呵呵～～你１月１１号考呀？我１０号考呢．．快了．．早几天才开始看

主语是irritation,要avoid的也是irritation而不是aspirin或stomach.....

是这样吧?

第一题logical prediction, it和which指代什么(指代的都不合逻辑），C句子不完整，所以选B。

第二题同问，我记得PREP-SC上好象有这道题，但是我查韦氏的时候觉得alike和numbers都没用错：

alike: in the same manner, form, or degree : equally
                    <was denounced by teachers and students alike>

number4)plural
        : a numerous group : many