求问prep12一道题

thssysb

Since digital recording offers essentially perfect reproduction—on compact discs, digital audiotapes, or digital videodiscs—audiophiles can accumulate vast collections of music, transferring them from one  format to another, copying it, and digitally altering it with little effort and not damaging the sound quality.
A.music, transferring them from one format to another, copying it, and digitally altering it with little effort and not damaging
B.music, transferring it from one format to another, copying it, and digitally altering it with little effort and no damage to
C.music, transferring them from one format to another, copy them, and digitally alter them with little effort and no damage to
D.music and transfer it from one format to another, copy it, and then digitally altering it with little effort and not damaging
E.music and transfer it from one format to another, copying it, and digitally alter it with little effort and no damage to

选A 这道题如果是it的话只能指代music吧，但是it能指代of结构里的名词吗

jieyukathy

1. it提到介词结构里的宾语，确实不是非常合适，但是在其他明显错误的条件下，可以接受！ 在SC里，错误的优先度的排序：句子整体结构（是否有完整句子结构）/主谓>句意>平行/动词>修饰/代词。要知道GMAT里，正确答案也并不是完美的，而是相较于其他选项而言比较好！2. 这道题涉及到句意，因为只可能transform music's format，例如从mp3格式改成其他的音乐格式，而不能将collections的格式改掉，因此排除所有包含有them的选项；
3.同时这道题里用了“comma  V-ing”的格式，transforming, copying 和 altering都是用来修饰accumulate表示伴随的；而且这三个动词的结构是平行的。