The quality of early pieces of blown glass excavated in Italy and Western Europe by far surpass those of pieces from the eastern Mediterranean, when regarded not only in terms of the variety of shapes represented, but also in terms of decorative techniques and functionality.

A.by far surpass those of pieces from the eastern Mediterranean, when regarded not only in terms of

B.surpasses by far those from the eastern Mediterranean, with regard not only to

C.far surpass that of pieces from the eastern Mediterranean, not only regarding

D.far surpasses that of the eastern Mediterranean, with regard to not only

E.far surpasses that of pieces from the eastern Mediterranean, not only with regard to

答案是E

not only .....but also.... A中并列不是很好吗?

求助!!!解答~~~~~~ 不明白~~~为什么是E?

in A, "those" referes to "the quality", yet "that" is needed here.

so, E is preferred.

but, i don't know what "by far" means ?

thanks !!!!!!!