OG103,看了很多老贴，还有些问题，拜托各位

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

我的疑问在于A，lack做谓语，OG说：lack is modified by a wordy and awkward construction, to such a large degree as to make it difficult to.

我理解为学生缺乏数学技能到了如此一个程度，以至于......，so as to的逻辑主语与句子主语学生也搭配的没有问题，唯一的疙瘩在于make it difficult中

的it指代了什么

it是形式主语，指代不定式。

更准确地说是指代to absorb them into a city economy becoming ever more dependent on information-based industries

那么也就成了学生自己很困难的吸收自己进入这个城市的经济？逻辑就不对了？谢谢1楼和斑竹

make的主语不是students，students的谓语是lack.

make的逻辑主语是Students in the metropolitan school district lack math skills to such a large degree

我认为是such....as to这个用法有问题, 只有so....as to。

我说的可能太绝对。但是such... as to好像没见过对的....

我只了解such后面一般都不能放抽象名词.....，但是我似乎很难把握抽象名词和实意名词的区别，这里莫非degree程度是抽象名词？

和这个没关系，这里主要是和as  to搭配成so....as to。

GMAT中表示太....以至于基本都是so.....that/as to

把so改成such都是错的。（我不能100％保证绝对这样，但是可以作为一个判断标准）