两道题及由此引发的主要成分、次要成分的思考

GWD-12-Q31:

Emily Dickinson’s letters to Susan Huntington Dickinson were written over a period beginning a few years before Susan’s marriage to Emily’s brother and ending shortly before Emily’s death in 1886, outnumbering her letters to anyone else.

A.      Dickinson were written over a period beginning a few years before Susan’s marriage to Emily’s brother and ending shortly before Emily’s death in 1886, outnumbering

B.       Dickinson were written over a period that begins a few years before Susan’s marriage to Emily’s brother and ended shortly before Emily’s death in 1886, outnumber

C.      Dickinson, written over a period beginning a few years before Susan’s marriage to Emily’s brother and that ends shortly before Emily’s death in 1886 and outnumbering

D.      Dickinson, which were written over a period beginning a few years before Susan’s marriage to Emily’s brother, ending shortly before Emily’s death in 1886, and outnumbering

E.       Dickinson, which were written over a period beginning a few years before Susan’s marriage to Emily’s brother and ending shortly before Emily’s death in 1886, outnumber

这题选E，我选A

A.      Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing.

B.       Nearly 99 percent of five hundred million different species of living creatures that appeared on Earth have vanished.

C.      Vanished are nearly 99percent of the five hundred million different species of living creatures that appeared on Earth.

D.      Of five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent of them have vanished.

E.       Of the five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent have vanished.

这题选E，我选A

在我看来，两个题目的正确选项都将原来做伴随的次要成分作为了主要成分，而原句的主要成分都下降为次要的修饰成分

这样可以吗？我的理解哪里有错误？

请指教 还有一天就要考了

第一道题目如果用独立主格形式的化意思就是写这封信这个动作伴随着数量方面的超出，意思上面应该是没有E好

第二道题目似乎可以相同理解，另外一个就是vanish这个动作已经是完成的了，如果用-ing形式来写的话比较别扭，因为ing一方面有主动的意思，另外一方面也有正在进行的意思