求助，so+adj...as to与so+adj...that到底用哪个好？

LilyJune

今天看了菜鸟手册的两道题目

103. Students in the metropolitan school district lack math skills to such a large degree as to make it difficult to absorb them into a city economy becoming ever more dependent on information-based industries.

(A)             lack math skills to such a large degree as to make it difficult to absorb them into a city economy becoming

(B)
                lack math skills to a large enough degree that they will be difficult to absorb into a city's economy that becomes

(C)
                lack of math skills is so large as to be difficult to absorb them into a city's economy that becomes

(D)            are lacking so much in math skills as to be
            difficult to absorb into a city's economy
            becoming

(E)  are so lacking in math skills that it will be difficult
            to absorb them into a city economy becoming

In A, lack is modified by a wordy and awkward construction, to such a large degree as to make it difficult to(和用so that 比起来，这个修饰确实不清晰，也不简洁). B is similarly flawed, and to a large enough degree that is unidiomatic. C is ungrammatical because it uses lack as a noun rather than as a verb: the phrase beginning Students... becomes a dangling element, and them refers illogically to skills rather than students(of 连接的词都是名词性的).
            Additionally, A, B, and C fail to use one or both of the "-ing" forms are lacking and becoming; these forms are preferable to lack and becomes in describing progressive and ongoing conditions. D uses the "-ing" forms, but so much... as to be difficult to absorb is an awkward and unidiomatic verbal modifier. Choice E is best.

88. The Emperor Augustus, it appears, commissioned an idealized sculpture portrait, the features of which are so unrealistic as to constitute what one scholar calls an "artificial face."

(A)             so unrealistic as to constitute

(B)             so unrealistic they constituted

(C)             so unrealistic that they have constituted

(D)            unrealistic enough so that they constitute

(E)             unrealistic enough so as to constitute

The verbs are and calls indicate that the sculpture is being viewed and judged in the present. Thus, neither the past tense verb constituted (in B) nor the present perfect verb have constituted (in C) is correct (1. 主从句中时态的呼应是gmat经常考点之一；2. 感觉逻辑主语对的时候，用so as to 比so that要更简洁)，何况这而用完成时没道理; both suggest that the statue's features once constituted an artificial face but no longer do so. Also, B would be better if that were inserted after so unrealistic, although the omission of that is not ungrammatical. Choices D and E use unidiomatic construc­tions with enough: unrealistic enough to constitute would be idiomatic, but the use of enough is imprecise and awkward in this context(用词的准确性).
                    Choice A, which uses the clear, concise, and idiomatic construction so unrealistic as to constitute, is best.

如上两题，88题说so...as to 好，103题又反对。。。。偶糊涂了。。。。

LilyJune

help~~

many thanx~~

carolhide

请查置顶知识点连接！

LilyJune

sorry,i forgot it...

thanx~~~