og-92-at once

92. Never before had taxpayers confronted so many

changes at once as they had in the Tax Reform Act of 1986.

(A)  so many changes at once as they had in

(B)  at once as many changes as

(C)  at once as many changes that there were with

(D)  as many changes at once as they confronted in

(E)   so many changes at once that confronted them in

Choices B and C awkwardly place at once between confronted and its direct object, changes

我印象中,状语放在谓语动词后没什么问题呀,(CONFRONTED),为什么说 AWKARDLY??谢谢各位NN!

at once改变了位置，修饰对象引起歧义，即使不歧义也笨拙。

修饰成分改变位置的大前提就是不能改变修饰对象也不能引起歧义！

B里结构上修饰前者，逻辑上修饰后者

C里，结构上前后都能修饰

个人意见！

at once 修饰其前面的词..

LONGMAN DICTIONARY

at once
a) immediately or without delay
Now, go upstairs at once and clean your room! When I saw him I recognized him at once.
b) together, at the same time
I can't do two things at once! Don't all talk at once.