作者：英吉
Recently documented examples of neurogenesis, the production of new brain cells, include the brain growing in mice when placed in a stimulating environment or neurons increasing in canaries that learn new songs.
(A) the brain growing in mice when placed in a stimulating environment or neurons increasing in canaries that
(B) mice whose brains grow when they are placed in a stimulating environment or canaries whose neurons increase when they
(C) mice's brains that grow when they are placed in a stimulating environment or canaries' neurons that increase when they
(D) the brain growth in mice when placed in a stimulating environment or the increase in canaries' neurons when they
(E) brain growth in mice that are placed in a stimulating environment or an increase in neurons in canaries that
原文意思：说最近一些例子包括了mice脑子的增长和canaries的增加
题目分析：原文体现了例子包含的两个内容形成的一个并列关系，应该是脑子的增长和C的增加，A说的不是两种增长形成并列而是脑子和neurons进行了并列，语义不对，干掉。
B也是脑子和neurons形成并列，干掉。
C同理，干掉。D前面用when placed没育告诉我placed的发起者后面说when they告诉了发起者，前后明显不对应，干掉。
E前面是brain growth后面加个从句后面是increase in neurons后面加一个从句，很对应，选这个。
