1. Several years ago the diet industry introduced a variety of appetite suppressants, but some of these drugs caused stomach disorders severe enough to have them banned by the Food and Drug Administration.
(E) such severe stomach disorders as to be
这题我的疑问一直没有解决，为什么Ｅ不对？ｓｕｃｈ ａｓ ｔｏ应该比ｓｕｃｈ ｔｈａｔ优先，只有在逻辑主语不同的情况下，才用ｓｕｃｈ ｔｈａｔ．但是这里ｓｕｃｈ ａｓ ｔｏ ｂｅ的主语也是ｓｏｍｅ ｏｆ ｔｈｅｓｅ ｄｒｕｇｓ，就是句子的主语，这里用ｓｕｃｈ ｔｈａｔ补出ｔｈｅｙ指代ｔｈｅｓｅ ｄｒｕｇｓ不是太繁琐了吗？请教这里ｓｕｃｈ ａｓ ｔｏ有什么不好？？
such sth as to，我没找到及见到此种结构，如有，请告之。
即使有（sht1 do ）such sth2 as to用法，在这里也不行，因为to不定式的逻辑主语则有歧义，
至于D中they则优先指代前面主句主语，从语法和从逻辑上指代都对
check this question cited from OG. you might understand.
171. In 1527 King Henry VIII sought to have his marriage to Queen Catherine annulled so as to marry Anne Boleyn.
(A) so as to marry
(B) and so could be married to
(C) to be married to
(D) so that he could marry（D）
(E) in order that he would marry
The sentence calls for an adverbial clause of purpose to explain why Henry sought the annulment. D, the best choice, does this clearly and correctly. It is introduced by an appropriate conjunction, so that, and contains a logically appropriate verb form, could marry. Awkward and imprecise, A does not specify who is to marry Anne. B substitutes an illogical coordinate predicate for the needed purpose clause; because the annulment had not yet been granted, Henry could not remarry. C lacks an appropriate conjunction, and the infinitive clause to be married to... makes this choice awkward and unidiomatic. Although E uses an appropriate conjunction, in order that, the verb form would marry is unidiomatic and illogical (might marry would be better).
1. but some of these drugs caused such severe stomach disorders that they were banned by the Food and Drug Administration.D
此处用that they were原因，我觉得是前后主语不一致导致，前面主语some of drugs,而后面they则是drugs.
看了大家以上的讨论， 我想下面一个题也很有代表性，请NN们指教：
14. Researchers have questioned the use of costly and experimental diagnostic tests to identify food allergies, such as milk, that supposedly disrupt normal behavior.
(A) to identify food allergies, such as
(B) to identify food allergies, like
(C) to identify food allergies, such as to
(D) for identifying food allergies, like that of（C）
(E) for identifying food allergies, such as for
这里的such as to 如何解？ 查了字典， 意思是“达到这样的程度以致” ，比如His speech is such as to incur enmity，但在该题中， 后面接一个名词milk 是怎么回事？ A为什么不对 ？
看了大家以上的讨论， 我想下面一个题也很有代表性，请NN们指教：
14. Researchers have questioned the use of costly and experimental diagnostic tests to identify food allergies, such as milk, that supposedly disrupt normal behavior.
(A) to identify food allergies, such as
(B) to identify food allergies, like
(C) to identify food allergies, such as to
(D) for identifying food allergies, like that of（C）
(E) for identifying food allergies, such as for
这里的such as to 如何解？ 查了字典， 意思是“达到这样的程度以致” ，比如His speech is such as to incur enmity，但在该题中， 后面接一个名词milk 是怎么回事？ A为什么不对 ？
这里的such as是列举， 和such... as to没有关系． 而to是承接前面的food allergies, 正常的语序是food allergies to milk. 对牛奶过敏． allergies to sth. 是固定用法．
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