题目信息
In response to viral infection, the immune systems of mice typically produce antibodies that destroy the virus by binding to proteins on its surface. Mice infected with a herpesvirus generally develop keratitis, a degenerative disease affecting part of the eye. Since proteins on the surface of cells in this part of the eye closely resemble those on the herpesvirus surface, scientists hypothesize that these cases of keratitis are caused by antibodies to herpesvirus.
Which of the following, if true, gives the greatest additional support to the scientists' hypothesis?
A:Other types of virus have surface proteins that closely resemble proteins found in various organs of mice.
B:There are mice that are unable to form antibodies in response to herpes infections, and these mice contract herpes at roughly the same rate as other mice.
C:Mice that are infected with a herpesvirus but do not develop keratitis produce as many antibodies as infected mice that do develop keratitis.
D:There are mice that are unable to form antibodies in response to herpes infections, and these mice survive these infections without ever developing keratitis.
E:Mice that have never been infected with a herpesvirus can sometimes develop keratitis.
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共享解析来源为网络权威资源、GMAT高分考生等； 如有疑问，欢迎在评论区提问与讨论
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正确答案：
D:There are mice that are unable to form antibodies in response to herpes infections, and these mice survive these infections without ever developing keratitis.
整理一下逻辑：老鼠的抗体为了抵抗病毒会表面生成蛋白质——感染H病毒的老鼠还会患K，患K的老鼠蛋白质和抗体产生的蛋白质相似——结论：抗体导致了老鼠患K，问加强。加强的思路一般是否定削弱，或者没有前因，就不会产生结果。D就是说，没有抗体的老鼠就不会患K
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