请教一道GWD-TN-24的语法题, 红色为答案，E这个选项不是改变句子意思了吗？

harvard2012

Q19: PP74.

A recently published report indicates that the salaries of teachers continue to lag far behind other college-educated professionals, because they make an average of nearly $8,000 a year less at the start of their careers and almost $24,000 less a year by the time they reach the age of 50. C/E



A.other college-educated professionals, because they make an average of nearly $8,000 a year less at the start of their careers and almost $24,000 less

B.other college-educated professionals, by an average of nearly $8,000 a year at the start of their careers, to almost $24,000

C.what other college-educated professionals are paid—making an average of nearly $8,000 a year less at the start of their careers and almost $24,000 less

D.those of other college-educated professionals—by an average of nearly $8,000 a year at the start of their careers to almost $24,000 less

E.those of other college-educated professionals—by an average of nearly $8,000 a year at the start of their careers, and by almost $24,000

harvard2012

colasama

lag behind …………by 8000…………


不改变意思，用了介词by就 已经有比较，表示差额的意思

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给字典解释，体会一下
by
Indicating the amount or size of a margin

the shot missed her by miles

the raising of taxes by 2.5%

harvard2012

许絮

D  to almost $24,000 less
这个我认为没有任何意义  表达不清
E   我认为没有改变意义   很好的平行  是说：8000一开始24000最后  整体比起来低   可能其他的是10000到34000呢