请教

redz11

Roy Wilkins was among the last of a generation of civil rights activists who let the nation through decades of change ( so profound that many young Americans can not imagine , much less remember ) , what segregation was like.
A . so profound that many young  Americans can not imagine , much less remember
B. so profound that many young Americans can not imangine, let alone remember
C.  so profound that many young Americans can not imangine, even less can they remember
D. so profound that many young Americans can not imangine , nor can they remember

dullpen

选a
much less remember 作为插入语，表示程度。
许多人无法想象，更少的人还能记得，种族隔离是什么样。

看longman例句
much less：used to say that a greater thing is even less true, likely, or possible than the thing you have just mentioned

The shelves were lined with books which neither Hugo nor Sally would ever open, much less read.此句神似！

dullpen

C: even less can they remember 作为插入语使用全句倒装，不合语法。awkward.
什么可以做插入语？---插入语结构包括： 完整的定语从句；名词；形容词短语和分词短语；不定式 ；连词；省略句；注意：※ 在定语从句中可以省略主+系。 ※ 任何从句应该是正常语序。
D:类似的，nor倒装一般放在句尾。这里也不应当倒装。
to sum up，"much less remember"  is precise and idiomatic.

redz11

thanks a lot .