陈圣元书上section37
The notion that a parasite can alter the behavior of a host organism is not mere fiction; indeed, the phenomenon is not even_____.
A) observable
B) real
C) comprehended
D) rare
E) imaginable
答案选D,我选E,我感觉题目给的信息没有体现稀少(rare)的,我选imaginable主要考虑跟题干中的fiction对应上。请大家解释一下,谢谢。