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(A) much less expert in distinguishing good paintings and poor ones, authentic art and

(B) far less expert in distinguishing good paintings from poor ones, authentic art from

(C) much less expert when it comes to distinguishing good paintings and poor ones, authentic art from

(D) far less expert in distinguishing good paintings and poor ones, authentic art and（B）

(E) far less the expert when it comes to distinguishing between good painting, poor ones, authentic art, and

The best answer will follow the idiomatic form distinguishing X from Y. The substitution of and for from makes choices A, C, D, and E faulty. Moreover, far is a better modifier of less expert than much is in A and C, when it comes to distinguishing is wordy in C and E, and E fails to acknowledge that two distinctions are being considered – one between good and poor paintings, another between authentic art and fakes. B is the correct answer or this question of middle difficulty.

这题选项是没问题的，但是解释上面说：, far is a better modifier of less expert than much is in A and C 。为什么far比much好？

语感吧,MUCH MORE IS BETTER ,MUCH LESS 怎么着多怪怪的,又是多又是少的,FAR +比较级较为常用

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  Roy Wilkins was among the last of a generation of civil rights activists who led the nation through decades of change so profound many young Americans are not able to imagine, even less to remember, what segregation was like.

(A) so profound many young Americans are not able to imagine, even less to remember

(B) so profound that many young Americans cannot imagine, much less remember

(C) so profound many young Americans cannot imagine nor even less remember

(D) of such profundity many young Americans cannot imagine, even less can they remember（B）

(E) of such profundity that many young Americans are not able to imagine, much less to remember

much less remember is more idiomatic than even less to remember

大全里面还有一些用much＋比较级的：

6.   A fire in an enclosed space burns with the aid of reflected radiation that preheats the fuel, making ignition much easier and flames spreading more quickly.

10.A large rise in the number of housing starts in the coming year should boost new construction dollars by several billion dollars, making the construction industry’s economic health much more robust than five years ago

        (C) making the construction industry’s economic health much more robust than it was five years ago

所以much less 是可以用的。

大全里面也有不少用far修饰比较级的，是不是ETS更喜欢far呢？

注意区分much less和far less这两者表达的区别：

much less更不用说，表达的是一种否定的意思，

for examle:They're always short of water to drink, much less to bathe in...

far修饰比较级，更少的熟练于，实际上这里还是熟练的。这里用much less明显不符合逻辑。

It seems that much is allowed to modify comparative word less,for exambles abound as following:

1, A Much Less Explosive Trend (washingtonpost.com)

2,They are paid much less than white workers doing the same kind of work(张道真95年 291  age 359)

What on earth does ETS mean "Moreover, far is a better modifier of less expert than much is in A and C'? NNs,help us.