XD我目前在看LZM的語法精解,覺得這是本很好的SC教材

弱弱的請教高手

E2-5: Several recent studies suggest that a child born into a family whose members have allergies will probably themselves develop allerigies following the onset of a minor viral infection. B) children born into families whose members have allergies will probably themselves develop allerigies C) a child born into a family the members of which have allergies will probably develop an allergy D) in those families where members have allergies, children will probably develop allergies themselves. E)children born into families in which there are allergies will themselves probably develop an allergy. 问题：答案选B，我选C，

1.我觉得“a minor viral infection”应该对应“an allergy”, 為啥不是呢?

2 LZM 書上說 C中的 the member of which have allergies 是非限定性從句,前後本應用逗號隔開,我想請問這裡為啥得用非限定從句呢?