主旨题：36套E22 最后一个阅读

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这个阅读我赶脚陈老师没有改好，原No题当中的一个关键性信息点被去掉了。先上两个版本的对比，我高亮了关键性的改动的部分。然后提出问题。
36套版本
The transplantation of organs from one individual to another normally involves two major problems: (1) organ rejection is likely unless the transplantation antigens of both individuals are nearly identical, and (2) the introduction of any unmatched transplantation antigens induces the development by the recipient of donor-specific lymphocytes that will produce violent rejection of further transplantations from that donor.However, we have found that, among many strains of rats, liver transplants are never rejected, and that they even induce a state of donor-specific unresponsiveness.Our hypothesis is that (1) many strains of rats simply cannot mount a sufficiently vigorous destructive immune-response (using lymphocytes) to outstrip the liver‘s relatively great capacity to protect itself from immune-response damage and that (2) the systemic unresponsiveness observed is due to concentration of the recipient‘s donor-specific lymphocytes at the site of the liver transplant. (138 words)

No.9版本
The transplantation of organs from one individual to another normally involves two major problems: (1) organ rejection is likely unless the transplantation antigens (a usually protein or carbohydrate substance (as a toxin or enzyme) capable of stimulating an immune response)of both individuals are nearly identical, and (2) the introduction of any unmatched transplantation antigens induces the development by the recipient of donor-specific lymphocytes that will produce violent rejection of further transplantations from that donor. However, we have found that among many strains of rats these “normal” rules of transplantation are not obeyed by liver transplants. Not only are liver transplants never rejected, but they even induce a state of donor-specific unresponsiveness in which subsequent transplants of other organs, such as skin, from that donor are accepted permanently. Our hypothesis is that (1) many strains of rats simply cannot mount a sufficiently vigorous destructive immune-response (using lymphocytes) to outstrip the liver’s relatively great capacity to protect itself from immune-response damage and that (2) the systemic unresponsiveness observed is due to concentration of the recipient’s donor-specific lymphocytes at the site of the liver transplant.
问题是
9 The primary purpose of the passage is to treat the accepted generalizations about organ transplantation in which of the following ways?
(A) Explicate their main features
(B) Suggest an alternative to them
(C) Examine their virtues and limitations
(D) Criticize the major evidence used to support them
(E) Present findings that qualify them

之所以说36套里面的改变不好，在于在解这道主旨题的时候，被删掉的“these 'normal' rules”告诉我们了哪一个generalizations是题目中问的“the accepted” one。接下来的选项可能会错选B，但是alternative的意思是提出了一个新的理论。而原文仍然是对“the accepted generalization”提出质疑，并进行一些修正。所以E项中的“qualify”：限制。成为正选。
不知道我的理解对不对，贻笑大方了。